Oil well

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of oil fields, and can be particularly used for remote, automatic and manual control of actuating mechanisms of well shutting-off devices. The well has a production casing with a flow column with underground production equipment, containing at least a circulating valve, shear valve, non-freezing check valve and, if necessary, a separating device, meant for separating oil and water. There is also a remote controlled device for cutting off flow of oil, which has an actuating mechanism, a wellhead with wellhead equipment, with a casing head, a tubing head, on which an X-mas tree is mounted, which includes shutting-off devices - casing and wing valves with actuating mechanisms, as well as a throttle valve adjacent to the latter, which regulates well flow rate and has an actuating mechanism, and monitoring and control devices - a fuse link and a low- and high-pressure control valve. The well is connected to a station for controlling shutting-off devices, throttle valve and cut off device, which comprises a pump-accumulator unit and at least one control unit per well. The pump-accumulator unit comprises a group of pumps and a high-pressure power functional hydropneumatic accumulator, connected to it through actuating medium of a high-pressure line. The control unit comprises power lines for functional control of actuating mechanisms of shutting-off devices, throttle valve and cut off device, where the said power lines are supplied by the said high-pressure line through pressure regulators, which reduce functional pressure to the required value. There is also a logical control line, which controls operation of actuating mechanisms through a time-stepped system for delaying command transmission for at least shutting-off the well in the logical sequence: wing valve - casing valve - cut off device. This line is connected to the fuse link and low- and high-pressure control valve and is fitted with hydraulic distribution valves with possibility of backing up command transmission for well shutting off. One of these valves can transmit a well shut-off command to the logical control line from the fuse link, the other - from the low- and high-pressure control valve, and at least two others - from remote and manual control respectively. The said delay system comprises delay mechanisms, fitted on sections for interaction of the logical control line with power lines for functional control of actuating mechanisms of the casing valve and cut off device. The delay mechanisms comprise a control hydropneumatic accumulator and a throttle, which provide for well shut-off at different times. The power line for functional control of the actuating mechanism of the throttle valves is provided with a three-position distribution valve, preferably with two electromagnets.

EFFECT: more reliable and accident-free operation of an oil well, reduced cost of oil extraction and much easier control of processes.

16 cl, 3 dwg

 

The invention relates to the mining industry, namely the oil and gas industry, in particular to the development of oil fields, and can be used for remote, automatic and manual actuator control valve bodies oil wells.

From prior art it is known device to control downhole selectors group of wells containing a pneumatic unit, connected to the injection and discharge lines with hydraulic units by the number of wells, and one block contains the gearbox, relay, pump, tank, valve, relief valve, and the other block contains two valves, choke, the first isolating valve and the third valve, and the device has a second isolating valve and the third valve (SU 1535970, EV 34/16, 47/10, 15.01.1990).

Also known hydraulic control system of an underwater wellhead containing hydraulic actuators associated primary and secondary pressure lines, line solenoid valves and check valves, and installed at the inlet of the shut-off valves solenoid valves, additional feedback and additional valve, which is located at the entrance shut-CL the gentry in the main pressure line with connection of the latter with sink, moreover, an additional check valve is placed in parallel with the valves and shut-off valve and connected to an input of a hydraulic actuator, and the output - input shutoff valve, with primary and secondary highways are interconnected by a bypass line control which is connected with the main highway (SU 1752930, EV 33/035, 04.08.1992).

Also the prior art complex of equipment for the management of estuarine surface valves subsea wells, comprising a main pressure line, an additional pressure line connected to the hydraulic actuators through the primary and secondary valves, line management, accumulators, connected with the primary and secondary pressure lines, pressure switches and check valves, and equipped with a host of pressure increasing chambers low and high pressure, when this line is connected with cameras low-pressure and main pressure line through the auxiliary valve and additional pressure line connected with cameras high-pressure and main pressure line through the reverse valves, and on the site an additional pressure line between the check valve and the additional g is reaccumulation parallel installed pressure switch, associated with an additional valve (SU 1733625, EV 43/01, 15.05.1992).

The disadvantages of the known technical solutions is their relatively low reliability, do not provide the required level of safe operation of oil wells, due to partial or complete lack of multivariate duplication systems, initiating a rapid and automatic shutoff of the produced fluid, and enhance the reliability of the protection wells, and prevention in the early stages of potential emergencies managed by remote or manual disconnection of the wells. In addition, the lack of reliability of the known devices and systems management wells caused by the absence or complex and little functional decision mechanisms and systems, coherent closure of the shut-off bodies well, including in emergency situations. Other disadvantages of the known devices control wells are unresolved or insufficient provision of uninterrupted work well when deactivated, including the long term, the supply of electricity to the mechanisms and drives well, or provide at least disposable include all mechanisms required for resuming operation of the well after it was deactivated.

The task of nastoyascheevremya is to improve reliability and trouble-free operation of oil wells, the reduction in the cost of oil and the greater ease of process control.

The problem is solved due to the fact that oil well according to the invention includes operating the column with the column tubing with underground operational equipment containing, at least, circulation, shear valves, non-freezing valve and, if necessary, separation installation, designed to separate water from oil, and cutting oil flow device with remote control, made with the Executive mechanism, the wellhead wellhead, with the column head, tube head, on which there are mounted in the form of a Christmas tree wellhead equipment, comprising a shut-off bodies - Nazareno and side valves with actuators and adjacent to the latter regulating the flow rate of the throttle valve is performed with the actuator, and the control and governing bodies - fusible insert and valve control low and high pressure, while the well is connected to the control station shut-off bodies, throttle valve and the shut-off device including a pump and an accumulator installation and at least one on the well control unit, being the m pump-and-accumulator installation includes pumping group and communicated with her on a working body line high pressure power functional hydropneumatic accumulator high pressure, and the control unit switches powered from said line through a high pressure regulators pressure reducing functional pressure to the required level, the power line functional actuator control valve bodies, throttle valve, shut-off devices, and managing their work through the system step by slowing down the passage of commands, at least, to close the well in a logical sequence - side valve - nazarena valve - shut off - line logic control provided with the fusible link and the control valve high and low pressure and is equipped with the possibility of duplication of passing commands to the closing of the well hydraulic control valves, one of which transfers in-line logic control command to close the hole from the fuse block, the other from the control valve high and low pressure, and at least two other respectively from remote and manual control, with the system slowing down includes installed on the sites of interaction line of logic control with power lines functional control of actuators nadkarni valves and shut-off device moderators, including managing pneumo toaccumulate and choke, providing a variety of on-time response to closing of wells, and power line functional control actuator throttle valve equipped with a three-position valve, preferably, with two electromagnets.

When the gushing oil as the cutting device can use the shutoff valve.

Oil well may contain a composition of ground maintenance equipment, at least one inhibitor valve, and column tubing includes at least one switch of the column.

Pump-and-accumulator unit can be fitted with a tank with a working body, mainly in liquid form, and power of functional hydropneumatic accumulator is made, mainly, modular sectional.

The control station may include a Central control panel located at a distance from her and communicated with her line, for example, fiber optic cable or radio channel, and the control station is designed to be placed in the Cabinet in which are mounted mentioned pump-and-accumulator installation and control unit, the station also equipped with a harness as mentioned control lines provided on the working body with the Executive mechanisms locking the bodies, throttle valve and shut-off device.

As a working body can use fluid temperature viscosity and freezing point of which is determined by the climatic conditions of the third and fourth climatic zones, as the working fluid include, mainly, mineral oil, and for the first and second climatic zones as a working body adopted a liquid with a low freezing point, mainly type silicon, for example polymethylsiloxane and tank for the working medium with at least one level indicator filling liquid, such as a visual indicator or a level sensor provided in the channels of telemetry with the Central remote control, while the level sensor is equipped with a signal system about permissible and critical levels or connected to the system Central control unit, issuing a command for maintaining the liquid level in the tank at specified levels, and for the first and second climatic zones of the tank of the working fluid supplied by the fluid heater, made in the form of a coil or heating element.

Pump group can be provided with at least one pump, mainly electric pump high pressure, preferably, axial-piston with asynchronous motor, duplicated lane for the second, and the second climatic zones, at least one additional parallel connected electric pump high pressure, and the specified pump or pumps is included in the line through a high pressure input and output filters, preferably, coarse and fine cleaning, respectively, and each of the said pump outlet is equipped with safety valve and pressure mounted to selectively disconnect the high pressure line through a system of locking devices, and at least installed at the output of the filters has a visual indicator and/or electrical sensor in communication with the Central control unit, while the pumping group, provided at the output devices starting or stop motors, pumps and non-return valve, communicated through the last line of high pressure with modular sectional power functional hydropneumatic accumulator, consisting of parallel connected to the collector modules and designed to create the necessary working pressure in the above-mentioned control lines, while the collector hydropneumatic accumulator reported on the working body with high line pressure, in addition, these devices start or stop a motor pump connected to the high pressure line, the imp is tive, for example, in the form of a pressure switch, or in the form of analog pressure sensors, either in the form of electric contact pressure gauges, and the modules mentioned hydropneumatic accumulator performed with membrane or, preferably, piston separator environments, while the total working volume of all modules of the functional power of the hydropneumatic accumulator adopted not less than required for a single opening of the shut-off bodies bore, a throttle valve and shut-off devices or maintain the operating condition of the well for a period of not less than one month in the absence of electricity.

Power line and functional management of the Executive mechanism of the cutting device may be provided with a pressure multiplier, preferably duplicated for the first and second climatic zones, and the aforementioned pressure regulators reduce the pressure from the functional 10-100 MPa to working from 0.5 to 70 MPa in the power lines of functional control of actuators nadkarni, side valve, throttle valve and in-line logic control, including the line of control valve high and low pressure and a fuse, and a pressure regulator in the power line and functional management of the Executive mechanism of the cutting device is configured to supply the working bodies is in the multiplier with the gear and last required the output pressure of the working fluid is not less 21-70 MPa for subsequent delivery and management of the Executive mechanism of the cutting device, all power line and functional management equipped with installed on sites before actuators safety valves pressure.

The control unit may contain a system of automatic protection of well system and remote system manual shutdown of wells, and automatic protection system includes connected to line logic control through the mentioned distribution valves line fuse and line control valve high and low pressure, the valve control low and high pressure set in the zone adjacent to the wellhead, preferably, on the train, and the line of control valve high and low pressure and a fuse provided with a relay or pressure sensors with the capability of issuing a signal to the Central control unit about disabling wells, respectively, by fire, or by reason of outside the range of allowable operating pressure determined by the setting of control valve high and low pressure.

Line logic control can be connected in series on the working body through the distribution valve to maintain a logical sequence of well control valves-valve power lines functional IP management is animalname mechanisms, including, at least, of the cutting device, nadkarni valves, side valves with the possibility of their allowable closing in particular, namely in the opposite sequence, with adjustable set valid time intervals between outages every one of them, why on line the logical control set mentioned control pneumohydroaccumulators with the possibility of their interaction on the pressure relief each with its throttle, while managing the hydropneumatic accumulator on the site of interaction with the power line and functional management of the Executive mechanism of the cutting device is configured to slow the closing of the cutting device at a time, 1.5-2 times the interval between closing nadkarni the valve side of the valve, comprising from 10 to 120 seconds.

On line logic control at the site of its supply to the power line functional control actuator side of the valve can be installed solenoid valve remote switching on and off of the side of the valve.

Distribution valves of all power lines functional control of actuators can be skommutirovany with the line of discharge of the spent working fluid, the vent line reported mainly through the filter to the tank of the working fluid.

On power lines functional actuator control valve bodies, throttle valve, shut-off devices can be installed thermal relief valves, commented on the output line reset excess working fluid released when the temperature of the working fluid and/or the environment.

Pump-and-accumulator installation can be performed mainly made with the front panel.

Shut-off bodies, throttle valve and shut-off device can be equipped with control devices located on the front panel of the control unit.

Wardrobe management station can be performed insulated and explosion, and the connection cable lines to the Cabinet is made through cable outlets explosion-proof execution.

The technical result provided by the present set of features is to improve reliability and trouble-free operation of oil wells, reducing the production cost of oil, the greater ease of control of technological processes through automated control of the shut-off bodies bore - side and nadkarni valves, regulating the flow rate of the throttle valve, underground cut the structure through the control station, which has developed in the invention of a pump and accumulator installation with power hydropneumatic accumulator and at least one serving the well control unit with power lines and functional departments of the Executive mechanisms of the locking bodies and the ends tied with them logical control line, equipped with not less than three times duplicated command valves, including two of which operate from a pulse supplied to the closing of the well when there is a risk of fire or supercritical low or high pressure in circuit and systems developed to close the well in a logical sequence clipping fluid side of the valve - nazarena valve - shut-off device is"working through the system slowdown passing commands to the closing, including tandem from the control of the hydropneumatic accumulator and orifice in a logical line management on sites of interaction with power lines functional control of actuators nadkarni valves and shut-off device.

The invention is illustrated by drawings, where:

figure 1 shows an oil well, the wiring diagram of the control station shut-off bodies, throttle valve and the shut-off device to the borehole;

figure 2 - pump-battery is fully installed, hydraulic schematic diagram;

figure 3 - control unit hydraulic schematic diagram.

Oil well 1 contains operational column 2 with column 3 tubing with underground operational equipment containing at least shut off the flow of oil device 4 with remote control, made with the Executive mechanism, the wellhead wellhead having a column head 5, the tubular cylinder 6, on which there are mounted in the form of a Christmas tree wellhead equipment 7, including stop-bodies - side valve 8 and Nazareno valve 9 with actuators and adjacent to the latter regulating the flow rate of the throttle valve 10, is made with the Executive mechanism, and control governing bodies - fuse box 11 and the valve 12 controls the low and high pressure.

Oil well 1 contains the composition of ground maintenance equipment, at least, the circulation valve 13, the shear valve 14, the ice-free check valve, if necessary, separation installation, installed in operating the packer 15 and designed to separate water from oil, and at least one inhibitor valve 16, and column 3 tubing provided with at least one time what adinterim 17 columns.

Oil well 1 is connected to the control station shut-off bodies 8 and 9, the throttle valve 10 and the cutting device 4, including pump-and-accumulator installation of 18 and at least one of an oil well unit 19 controls. Also, the control station contains a Central control unit (not shown)placed at a distance from her and communicated with her line, for example, fiber-optic cable.

Pump-and-accumulator installation 18 includes a pumping group and communicated with her on a working body line 21 high pressure power functional hydropneumatic accumulator 22 high pressure. The control unit includes fed from said line 21 through a high pressure regulators 23, 24 pressure-lowering functional pressure to the required level, power lines 25-28 functional management respectively actuators valve bodies 8,9, throttle valve 10, the cutting device 4, and managing their work through the system step by slowing down the passage of commands, at least, to close the well in a logical sequence - side gate valve 8 - nazarena valve 9 is shut-off device 4 line 29 logic control provided with the fusible link 11 and valve 12 controls the high and low pressure and is equipped with in what zmoznostjo duplication of passing commands to the closing of the well hydraulic control valves 30-33, one 30 of which passes in line 29 logical control command to close the hole from fuse 11, the other 31 from valve 12 controls the high and low pressure, and at least two other 32, 33 respectively from remote and manual control. System slowdown includes installed on sections 34, 35 interaction line 29 logic control respectively with the power lines 26, 27 functional management respectively actuators nadkarni valves and shut-off device moderators, including managing the hydropneumatic accumulator 36 and the orifice 37, providing a variety of on-time response to closure of the well.

Power functional hydropneumatic accumulator 22 is accomplished, primarily, modular sectional.

Power line 27 function control actuating mechanism of the cutting device equipped with no less than one multiplier 38 pressure. For the first and second climatic zones multiplier 38 pressure is made, preferably, are duplicated.

At the fountain oil as the cutting device 4 using the shutoff valve.

The control station is designed to be placed in rack 39, which are mounted mentioned pump-and-accumulator installation 18 and block 19 management, exceptthat the station is equipped with a harness as mentioned control lines provided on the working body with the Executive mechanisms of the locking bodies, throttle valve and shut-off device.

Pump-and-accumulator installation 18 is equipped with a tank 40 with a working body, mainly in the form of a liquid.

As a working medium fluid temperature viscosity and freezing point of which is determined by the climatic conditions of the well, the control station is designed to work in the third and fourth climatic zones, as the working fluid include, mainly, mineral oil, and for the first and second climatic zones as a working body adopted a liquid with a low freezing point, mainly type silicon, for example polymethylsiloxane. Tank 40 to the working fluid include not less than one level indicator filling liquid, such as a visual indicator or a level sensor provided in the channels of telemetry with the Central remote control. The level sensor is equipped with a signal system on the maximum allowable and critical levels or connected to the system Central control unit, issuing a command for maintaining the liquid level in the tank 40 at specified levels. For the first and second climatic zones tank abocado body provided with a fluid heater, made in the form of coil or heating element.

Pump group provided with at least one pump 41, mainly electric pump high pressure, preferably, axial-piston with asynchronous motor 42 is doubled for the first and second climatic zones, at least one additional parallel connected electric pump 41 high pressure. The pump 41 or pumps included in line 21 through a high pressure inlet filter 43 and the output filter 44, preferably coarse and fine cleaning, respectively. Each of these pumps 41 at the outlet is equipped with a safety valve 45 and pressure mounted to selectively disconnect from line 21 through a high pressure system shut-off devices, for example, ball valves 46. At least, installed at the output of the filters 44 fine cleaning has a visual indicator and/or electrical sensor in communication with the Central control unit. Pump group 20, provided on the output devices start or stop the motor 42 and pump 41 and the check valve 47, communicated through the last line 21 high pressure made modular sectional power functional hydropneumatic accumulator 22, consisting of parallel-connected to the manifold 48 modules 49 and designed glassdale required working pressure in these lines 25-29 management. The manifold 48 with hydropneumatic accumulator 22 reported on the working body with the line 21 to the high pressure. Device start or stop the motor 42 and pump 41 connected to the line 21 high pressure, made for example in the form of a relay 50 pressure, either in the form of analog pressure sensors, either in the form of electrical contact pressure gauges. Modules 49 hydropneumatic accumulator 22 is accomplished with the membrane or, preferably, piston separator environments. The total working volume of all modules 49 functional power of the hydropneumatic accumulator 22 adopted not less than required for a single opening of the shut-off bodies wells 8, 9, the throttle valve 10 and the valve-stopping mechanism 4 or maintain the operating condition of the well for a period of not less than one month in the absence of electricity.

Regulators 23 pressure reduce the pressure from the functional 10-100 MPa to working from 0.5 to 70 MPa in the power lines 26, 25, 28 functional management respectively actuators nadkarni, side valve, throttle valve and in line 29 logic control, including lines 51, 52 respectively of the control valve high and low pressure and a fuse. The controller 24 of the pressure in the power line 27 function control actuating mechanism of the cutting device is configured to supply working the th body in the multiplier 38 with the gear of the latter and the desired output pressure of the working fluid is not less 21-70 MPa for subsequent delivery and management of the Executive mechanism of the cutting device. All of these lines of force functional control is equipped with installed on sites before actuators safety valves 53 pressure.

Unit 19 controls provides automatic protection wells, system and remote system manual shutdown of the well. Automatic protection system includes connected to line 29 logic control through hydraulic distribution valves 30, 31, respectively, line 52 fuse and line 51 of the control valve high and low pressure. The valve 12 controls the low and high pressure set in the zone adjacent to the wellhead, preferably, on the train. Lines 48, 49, respectively, of the control valve high and low pressure and a fuse provided with a relay 54 or pressure sensors with the capability of issuing a signal to the Central control unit about disabling wells, respectively, by fire, or by reason of outside the range of allowable operating pressure determined by the setting of the valve 12 controls the low and high pressure.

Line 29 logic control sequentially connects on the working body through a distribution valve 55-57 to maintain a logical sequence of well control valves-valves 58-60 power lines 27, 26, 25 function is optional actuator control, including, at least, of the cutting device 4, nadkarni valve 9, the side of the valve 8 with the possibility of their allowable closing in particular, namely in the opposite sequence, with adjustable set valid time intervals between outages of each of them. This on line 29 logical control set control pneumohydroaccumulators 36 with the possibility of their interaction on the pressure relief each with its orifice 37. Managing the hydropneumatic accumulator 36 on the section 35 of interaction with the power line 27 function control actuating mechanism of the cutting device 4 is configured to slow the closing of the cutting device at a time, 1.5-2 times the interval between closing nadkarni valve 9 and the side of the valve 8, comprising from 10 to 120 seconds.

On line 29 logical control at the site of its supply to the power line 25 functional control actuator side of the valve has a solenoid valve 61 remote switching on and off of the side of the valve 8.

Power line 28 functional control actuator throttle valve 10 is equipped with three-position valve 62, preferably, with two electromagnets.

The dispenser is haunted valves of all power lines functional control of actuators skommutirovany line 63 reset the spent working fluid, in addition, the line 63 reset communicated mainly through the filter to the tank 40 of the working fluid.

On power lines 25-28 functional actuator control valve bodies 8, 9, the cutting device 4, the throttle valve 10 is installed temperature and pressure relief valves 64, skommutirovany on the output line 63 of the discharge of excess working fluid released when the temperature of the working fluid and/or the environment.

Pump-and-accumulator installation 18 is made mainly made with the front panel.

The locking bodies 8, 9, the throttle valve 10 and the cutting device 4 well equipped with control devices located on the front panel of the unit 19 of the control.

The rack 39 of the control stations made of insulated and explosion, and the connection cable lines to the Cabinet is made through cable outlets explosion-proof execution.

Consider the work station control shut-off bodies, throttle valve and shut-off devices for oil wells at the fountain oil.

Pump-and-accumulator installation 18 is designed to create and maintain the desired operating pressure of the working fluid working medium in the line control station.

The working environment of the tank 40 with a volume of about 200 l through a pipeline that goes through Phi is Tr coarse 43 and the valve 65 to the input of the pump 41, which is driven by a motor 42. At the outlet of the pump after the valve 46 has a fine filter 44.

A relief valve 45 is configured to set the working pressure 21 MPa and in excess of a predetermined value of pressure line 21 connects the high pressure (discharge) from the cavity of the tank 40 and resets the excessive volume of the working medium in the line 63 is reset.

Through the check valve 47 from line 21 to discharge the working medium enters the manifold 48 and fills modules 49 functional power of the hydropneumatic accumulator 22 for storing an adequate supply of working medium under pressure, with each module 49 is made with a volume of 40-50 HP

After filling of the hydropneumatic accumulator 22 working environment by pipeline enters the power lines 25-28 functional actuator control valve bodies, valve-shut-off valve, throttle valve and in line 29 logic control.

The controller 24 of the pressure in the power line 27 function control actuating mechanism of the valve-stopping mechanism reduces the pressure in line 21 of the discharge with 21 MPa to a pressure of three or four times the pressure at the output of the multiplier 38, which provides pressure on line 27 function control actuating mechanism of the valve-stopping mechanism, equal to 28 MPa (kg/cm 2). The relief valve 53 is configured to set the operating pressure 28 MPa and in excess of a predetermined value of pressure connects the line 27 with the cavity of the tank 40 and resets the excessive volume of the working medium in the line 63 is reset.

Regulators 23 pressure pressure reducing power lines 28 functional control actuator throttle valve 10 and line 29 logic control to a working pressure of 4 MPa (40 kgf/cm2), and in the power lines 25, 26 functional management respectively actuators side and nadkarni valves - up to 14 MPa (140 kgf/cm2). Safety valves 53 are configured on the specified working pressure of 4 MPa and in excess of a predetermined pressure to connect said line with the cavity of the tank 40 and resets the excessive volume of the working medium in the line 63 is reset.

In block 19 of the station management, the working environment at a pressure of 4 MPa in line 29 logic control is transferred to the input of the normally closed hydraulic distribution valve 30 is designed for pressure relief of the control in case of fire. After filling line 52 fuse hydraulic distribution valve 30 opens, and fluid is fed to the input of the normally closed hydraulic valves 31, targeted lesbros control pressure when the valve 12 controls the low and high pressure set in line 51 mentioned valve. Then, the working medium passes through the normally open control valve 32, designed for remote switching all wells, and the control valve 33, which is designed for manual emergency shutdown of the entire borehole through emergency shutdown.

After the distribution valve 33, the working medium is fed to the input of the normally closed valves 55 hydraulic and manual override.

With a full line 52 fuse pressure switch 54 outputs a signal to the Central control console.

With a full line 51 of the control valve high and low pressure other pressure switch 54 provides a signal to the Central control console.

Further, in order to open the hole you need to perform the following steps:

- pull the handle distribution valve 55, which is placed on samaritana and working environment through the check valve 66 is supplied to the valve actuator valve 58, which opens, and fluid from the power line 27 function control actuating mechanism of the valve-stopping mechanism arrives at its Executive mechanism. Is the opening of the valve-stopping mechanism 4.

- pull the handle distribution valve 56, which is placed on samaritana and working environment through the reverse is LAPAN 67 is supplied to the valve actuator valve 59, which opens, and fluid from the power lines 25, 26 functional management respectively actuators side and nadkarni valves is supplied to the actuator nadkarni valves. Is the opening nadkarni valve 9.

- pull the handle distribution valve 56, which is placed on samaritana and working environment through the check valve 67 and normally open solenoid valve 61 is supplied to the valve actuator valve 60, which is opened, and the working environment of the power lines 25, 26 functional management respectively actuators side and nadkarni valves is supplied to the actuator side of the valve. Is the opening side of the valve 8.

An example of closure works well.

The system auto-protect

At typical values of the pressures in the lines 51, 52 respectively of the valve 12 controls the high and low pressure and a fuse 11 wells the control valve 31 is in the open position. When the drop or increase in pressure of the working medium in the above-mentioned lines above or below the established (given) values of the control valve 31 moves to the closed position, reset the working environment of the power lines 25, 26, 27 functional management accordingly grant the compulsory mechanisms side, nadkarni valves and valve-stopping mechanism. Chokes 37 with pneumopericardium 36 serve to regulate the time interval in the sequential closing of the shut-off bodies bore and a valve-stopping mechanism.

In the event of a fire when the temperature of the environment at the wellhead above the set value (when the fire situation) resets the working medium from line 52 of a fuse, after which the control valve 30 moves to the closed position, reset the working environment of the power lines 25, 26, 27 functional management respectively side, nadkarni valves and valve-stopping mechanism. Chokes 37 with pneumopericardium 36 serve to regulate the time interval in the sequential closing of the shut-off bodies bore and a valve-stopping mechanism.

System remote shutdown of the well.

In block 19 of the control station is equipped with the control valve 32, made solenoid, and the solenoid valve 61 is operated from the control panel station, or from the Central control console.

When the signal is 24V, the motor valve 32 is remote closing side of the valve 8, nadkarni valve 9 and the valve-stopping mechanism 4.

When the signal is 24V, the motor valve 61 is made of remote controller with many brand is Noah closing side of the valve 8.

Control throttle valve.

When voltage is applied to the first electromagnet three-position distribution valve 62, the working medium under pressure up to 4 MPa from the power line 28 functional control actuator throttle valve is in its Executive mechanism. From the positioner mounted on said valve, receives the analog signal in the cupboard 39 control or Central control. Then from the Cabinet 39 signal to the first electromagnet (tension) and the valve 62 is transferred to the neutral position. If necessary, reduce the consumption of oil from Cabinet control signal to the second solenoid valve 62 to reset the working environment to the specified parameters.

1. Oil well, characterized in that it contains operating the column with the column tubing with underground operational equipment containing, at least, circulation, shear valves, non-freezing valve and, if necessary, separation installation, designed to separate water from oil, and cutting oil flow device with remote control, made with the Executive mechanism, the wellhead wellhead, with the column head, rubbing the ing head, on which there are mounted in the form of a Christmas tree wellhead equipment, comprising a shut-off bodies - Nazareno and side valves with actuators and adjacent to the latter regulating the flow rate of the throttle valve is performed with the actuator, and the control and governing bodies - fusible insert and valve control low and high pressure, while the well is connected to the control station shut-off bodies, throttle valve and the shut-off device including a pump and an accumulator installation and at least one on the well control unit, and pump-and-accumulator installation includes pumping group and communicated with her a working body line high pressure power functional hydropneumatic accumulator high pressure, and the control unit switches powered from said line through a high pressure regulators pressure, with the possibility of lowering the functional pressure to the required level, power lines, functional actuator control valve bodies, throttle valve, shut-off devices, and having the ability to manage their work through the system step by slowing down the passage of commands, at least, to close the well in a logical sequence: side for virka - nazarena valve - shut-off device - line logic control provided with the fusible link and the control valve high and low pressure and is equipped with the possibility of duplication of passing commands to the closing of the well hydraulic control valves, one of which has the possibility of transmission line logic control command to close the hole from the fuse block, the other from the control valve high and low pressure, and at least two other respectively from remote and manual control, with the system slowing down includes installed on the sites of interaction line of logic control with power lines functional control of actuators nadkarni gate valves and shut-off device moderators, including managing the hydropneumatic accumulator and orifice, providing a variety of on-time response to closing of wells, and power line functional control actuator throttle valve equipped with a three-position valve preferably with two electromagnets.

2. Oil well according to claim 1, characterized in that when the gushing oil as the cutting device used shutoff valve.

3. Oil SLE is zhina according to claim 1, characterized in that it contains in the composition of ground maintenance equipment, at least one inhibitor valve, and column tubing includes at least one switch of the column.

4. Oil well according to claim 1, characterized in that the pump-and-accumulator unit is supplied tank with a working body mostly in the form of a liquid, and power functional hydropneumatic accumulator is made mostly modular sectional.

5. Oil well according to claim 1, characterized in that the control station has a Central control panel located at a distance from her and communicated with her line, for example, fiber optic cable or radio channel, and the control station is designed to be placed in the Cabinet in which are mounted mentioned pump-and-accumulator installation and control unit, the station also equipped with a harness as mentioned control lines provided on the working body with the Executive mechanisms of the locking bodies, throttle valve and shut-off device.

6. Oil well according to claim 4, characterized in that the working fluid is used, the temperature, the viscosity and freezing point of which is determined by the climatic conditions of the well, while the control station, is the th for the third and fourth climatic zones, as a working body is equipped mainly mineral oil, and for the first and second climatic zones as a working body adopted a liquid with a low freezing point, mainly type silicon, for example polymethylsiloxane and tank for the working medium with at least one level indicator filling liquid, such as a visual indicator or a level sensor provided in the channels of telemetry with the Central remote control, while the level sensor is equipped with a signal system on the maximum allowable and critical levels or connected to the system Central control unit capable of issuing commands to maintain the liquid level in the tank at specified levels and for the first and second climatic zones of the tank of the working fluid supplied by the fluid heater, made in the form of a coil or heating element.

7. Oil well according to claim 1, characterized in that the pumping group provided with at least one pump, mainly electric pump high pressure, preferably an axial piston with asynchronous motor is doubled for the first and second climatic zones, at least one additional parallel connected electric pump high pressure, and the specified pump or pumps is included in the line of the high level is the pressure at the input and output filters preferably coarse and fine cleaning, respectively, each of these pumps outlet is equipped with safety valve and pressure mounted to selectively disconnect the high pressure line through a system of locking devices, and at least installed at the output of the filters has a visual indicator and/or electrical sensor in communication with the Central control unit, while the pumping group, provided at the output devices start or stop a motor pump and a check valve provided through the last line of high pressure with modular sectional power functional hydropneumatic accumulator, consisting of parallel connected to the collector modules and designed to create the necessary working pressure in the above-mentioned control lines, while the collector hydropneumatic accumulator reported on the working body with high line pressure, in addition, these devices start or stop a motor pump connected to the high pressure line, made for example in the form of a pressure switch, or in the form of analog pressure sensors, either in the form of electric contact pressure gauges, and the modules mentioned hydropneumatic accumulator is made with diaphragm or piston preferably the separator environments, while amounts of the RNA working volume of all modules of the functional power of the hydropneumatic accumulator adopted not less than required for a single opening of the shut-off bodies wells throttle valve and shut-off devices or maintain the operating condition of the well for a period of not less than one month in the absence of electricity.

8. Oil well according to claim 1, characterized in that the power line and functional management of the Executive mechanism of the cutting device is equipped with a pressure multiplier, preferably duplicated for the first and second climatic zones, and the aforementioned pressure regulators have the ability to decrease the pressure from the functional 10-100 MPa to working from 0.5 to 70 MPa in the power lines of functional control of actuators nadkarni, side valve, throttle valve and in-line logic control, including the line of control valve high and low pressure and a fuse, and a pressure regulator in the power line and functional management of the Executive mechanism of the cutting device is configured to supply the working fluid in the multiplier taking into account the gear ratio of the last and the desired output pressure of the working fluid is not less 21-70 MPa for subsequent delivery and management of the Executive mechanism of the cutting device, all power line and functional management equipped with installed on sites before actuators fuse is burnt valves pressure.

9. Oil well according to claim 5, characterized in that the control unit contains the system auto-protect wells, system and remote system manual shutdown of wells, and automatic protection system includes connected to line logic control through the mentioned distribution valves line fuse and line control valve high and low pressure, the valve control low and high pressure set in the zone adjacent to the wellhead, preferably, on the train, and the line of control valve high and low pressure and a fuse provided with a relay or pressure sensors with the capability of issuing a signal to the Central control unit about disabling wells accordingly, by fire, or by reason of outside the range of allowable operating pressure determined by the setting of control valve high and low pressure.

10. Oil well according to claim 1, characterized in that the line logic control sequentially connects on the working body through the distribution valve to maintain a logical sequence of well control valves-valve power lines functional control of actuators, including, at least, of the cutting device, nadkarni zadig and, side of the valve with a valid closure in particular, namely in the opposite sequence, with adjustable set valid time intervals between outages every one of them, why on line the logical control set mentioned control pneumohydroaccumulators with the possibility of their interaction on the pressure relief each with its throttle, while managing the hydropneumatic accumulator on the site of interaction with the power line and functional management of the Executive mechanism of the cutting device is configured to slow the closing of the cutting device at a time, 1.5-2 times the interval between closing nadkarni valve and the side of the valve, comprising from 10 to 120 C.

11. Oil well according to claim 1, characterized in that on-line logic control at the site of its supply to the power line functional control actuator side of the valve has a solenoid valve for remote switching on and off of the side of the valve.

12. Oil well of claim 10, wherein the distribution valves of all power lines functional control of actuators skommutirovany with the line of discharge of the spent working fluid, the vent line reported p is imushestvenno through the filter to the tank of the working fluid.

13. Oil well according to item 12, characterized in that on the power lines functional actuator control valve bodies, throttle valve, shut-off devices are installed temperature and pressure relief valves, skommutirovany on the output line reset excess working fluid released when the temperature of the working fluid and/or the environment.

14. Oil well according to claim 1, characterized in that the pump-and-accumulator installation is mainly made with the front panel.

15. Oil well according to claim 1, characterized in that the shut-off bodies, throttle valve and a shut-off device is provided with control devices located on the front panel of the control unit.

16. Oil well according to claim 5, characterized in that the Cabinet control stations made of insulated and explosion, and the connection cable lines to the Cabinet is made through cable outlets explosion-proof version.



 

Same patents:

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to mining industry and can be used for exploiting oil fields through remote, automatic and manual control of well shutting-off devices. According to the method, a well can be controlled through opening and closing of shutting-off devices of an X-mas tree - wing and casing valves and an underground safety valve, as well as through regulation of well flow rate using a throttle valve. The well is connected to a control station, which comprises a pump-accumulator unit and a well control unit. The pump-accumulator unit comprises a group of pumps and a power hydropneumatic accumulator, linked through an actuating medium with a high-pressure line, which connects them to the well control unit. The high-pressure line is connected through reducing pressure regulators to power lines for functional control of shutting-off devices and the throttle valve. The station is equipped with a logical control line, which is connected to actuating mechanisms, providing for automatic command transmission for consecutive closure of the wing valve, casing valve, underground safety valve through delay mechanisms. Each delay mechanism has a control hydropneumatic accumulator and a throttle, adjusted for given delay of flow of actuating medium from the control hydropneumatic accumulator. The shut-off command arrives at the actuating mechanism of the wing valve first, then with given delay, to the actuating mechanism of the casing valve, after which, with given further delay, to the actuating mechanism of the underground safety valve. The logical control line is hydraulically linked to monitoring and control devices - a fuse link and a low- and high-pressure control valve. The monitoring and control devices are connected through the actuating medium, each to its trigger mechanism which controls pressure release in the given logical control line. The logical control line is doubly provided with similar trigger mechanisms for remote and manual triggering successive closure of the said well shutting-off devices in the said order.

EFFECT: more reliable and accident-free operation of an oil field, reduced cost of extracting oil, easier control of processes due to automated control of well shutting-off devices.

25 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to mining industry and can be used for exploiting gas-condensate fields through remote, automatic and manual control of well shutting-off devices. According to the method, a well can be controlled through opening and closing of shutting-off devices of an X-mas tree - wing and casing valves and an underground safety valve, as well as through regulation of well flow rate using a throttle valve. The well is connected to a control station, which comprises a pump-accumulator unit and a well control unit. The pump-accumulator unit comprises a group of pumps and a modular-sectional power functional hydropneumatic accumulator, linked through an actuating medium with a high-pressure line, which connects them to the well control unit. The high-pressure line is connected through reducing pressure regulators to power lines for functional control of shutting-off devices and the throttle valve. The station is equipped with a logical control line, which is connected to actuating mechanisms, providing for automatic command transmission for consecutive closure of the wing valve, casing valve, underground safety valve through delay mechanisms. Each delay mechanism has a control hydropneumatic accumulator and a throttle, adjusted for given delay of flow of actuating medium from the control hydropneumatic accumulator. The shut-off command arrives at the actuating mechanism of the wing valve first, then with given delay, to the actuating mechanism of the casing valve, after which, with given further delay, to the actuating mechanism of the underground safety valve. The logical control line is hydraulically linked to monitoring and control devices - a fuse link and a low- and high-pressure control valve. The monitoring and control devices are connected through the actuating medium, each to its trigger mechanism which controls pressure release in the given logical control line. The logical control line is doubly provided with similar trigger mechanisms for remote and manual triggering successive closure of the said well shutting-off devices in the said order.

EFFECT: more reliable and accident-free operation of a gas-condensate field, reduced cost and easier control of gas-condensate extraction processes.

25 cl, 3 dwg

Oil well pad // 2367772

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of oil fields and can be used for remote, automatic and manual control of actuating mechanisms of shutting-off devices of wells, which are part of an oil well pad. The oil well pad comprises at least two oil wells, each of which contains an extracting column with a flow column with underground production equipment, containing at least circulating and shear valves, non-freezing return valve and, if necessary, a separation column, meant for separating oil and water, as well as a remote controlled device for cutting off flow of oil, made with an actuating mechanism, wellhead with wellhead equipment, with a column head, tubing head, on which an X-mas tree is mounted, which comprises shutting-off devices - casing and wing valves with actuating mechanisms, as well as a throttle valve adjacent to the latter for controlling flow, made with an actuating mechanism, and monitoring and control elements - fuse link and a low- and high-pressure valve. Each well is linked through its shutting-off devices to a control station, which comprises a common pump-accumulator unit and at least one control unit for each well. The pump-accumulator unit comprises a group of pumps and a high-pressure power functional hydropneumatic accumulator linked through the actuating medium of the high-pressure line. Each control unit comprises power lines for functional control of actuating mechanisms of shutting-off devices, throttle valve and the cut off device, supplied by the said high-pressure line through pressure regulators, and controls their operation through a time-stepped system for command transmission for at least closure of a well in the logical sequence: "wing valve - casing valve - cut off device" - logical control line, linked to the fuse link and low- and high-pressure control valve and fitted with hydraulic control valves which can back up command transmission for closure of each well. One of the hydraulic control valves transmits a command for closing each well to the logical control line from the fuse link, the other - from the low- and high-pressure control valve, and at least two others - from remote and manual control, respectively. The said delay system comprises delay mechanisms, fitted on sections for interaction of the logical control line with power lines for functional control of actuating mechanisms of the casing valve and the cut off device, where the delay mechanisms comprise a hydropneumatic accumulator and a throttle, which provide for closure of each well at different times. The power line for functional control of the actuating mechanism of the throttle valve is provided with a three-position distribution valve, preferably with two electromagnets.

EFFECT: more reliable and accident-free operation of oil wells, which are part of an oil well pad, reduced cost of extracting oil and much easier control of processes.

16 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to reservoir engineering and can be used for remote, automatic and manual control of actuating mechanisms of shutting-off devices of gas field wells. The equipment contains a control station for shutting-off devices of the well, more specifically wing and casing valves, fitted on wellhead equipment, choke valve, underground safety valve, with actuating mechanisms, as well as a valve for controlling low and high pressure and a fuse link. The control station includes at least one control unit for actuating mechanisms for shutting off devices, a pump-accumulator unit with and actuating medium, mainly in form of liquid, power lines for functional control of the said actuating mechanisms and a logical control line, which can provide for command transmission for at least shutting off the well in a logical sequence: wing valve - casing valve - underground safety valve, fitted for this system for double selective actuation, respectively, of the low pressure and high pressure control valves, fuse link, either remote or manual command for closing shutting off devices of the well. For this purpose the said line is also provided with a timed three-step actuating system with slow transmission of actuation command for at least closure of casing valve and underground safety valve, including logical control lines in at least sections for controlling the casing valve and the underground safety valve, different time-tuned command transmission delay mechanisms, consisting of a combination a hydropneumatic accumulator and a choke, fitted in series in the said sections. The pump-accumulator unit has a tank with actuating medium and a group of pumps.

EFFECT: more reliable and accident-free operation of the well, reduced cost of extracting oil and gas and much easier control of processes.

15 cl, 3 dwg, 1 ex

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of gas fields and can be used for remote, automatic and manual control of actuating mechanisms of shutting-off devices of gas field wells. The equipment contains a control station for shutting-off devices of the well, more specifically wing and casing valves, fitted on wellhead equipment, throttle valve, underground safety valve, with actuating mechanisms, as well as a low- and high-pressure control valve and a fuse link. The control station includes at least one control unit for actuating mechanisms for shutting-off devices, a pump-accumulator unit with and actuating medium, power lines for functional control of the said actuating mechanisms and a logical control line, which can provide for command transmission for at least shutting off the well in the logical sequence: wing valve - casing valve - underground safety valve, fitted for this system for double selective actuation of, respectively, low- and high-pressure control valve, fuse link, either remote or manual command for closure of shutting-off devices of the well. For this purpose the said line is also provided with a timed three-step actuating system with delayed transmission of actuating command for at least closure of the casing valve and underground safety valve, including logical control lines and different time-tuned command transmission delay mechanisms, on at least sections for controlling the casing valve and safety valve. These lines consist of a combination of a hydropneumatic accumulator and a throttle fitted in series in the said sections. The power line for functional control of the actuating mechanism of the safety valve has at least one pressure booster.

EFFECT: more reliable and no-failure operation of the well, reduced cost of extracting gas, much easier control of processes.

15 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of oil-gas fields and can be used for remote, automatic and manual control of actuating mechanisms of shutting-off devices of wells, which are part of an oil and gas well pad. The well pad comprises at least two oil and gas wells, each of which contains an extracting column and a flow column with underground production equipment, containing at least a production packer, circulation and shear valves, as well as a remote controlled safety valve with an actuating mechanism, wellhead with wellhead equipment, with a column head, tubing head, on which an X-mas tree is mounted, which includes shutting-off devices - casing and wing valves with actuating mechanisms, as well as a throttle valve adjacent to the latter, made with an actuating mechanism, and monitoring and control elements - fuse link and a low- and high-pressure control valve. Each well is linked through its shutting-off devices, throttle valve and safety valve to a control station, which comprises a common pump-accumulator unit and at least one control unit for each well. The pump-accumulator unit comprises a group of pumps, fitted for the first and second climate zones, preferably, with two parallel connected high-pressure pump, one of which is a distribution pump, and a high-pressure power functional hydropneumatic accumulator linked to the group of pumps through the actuating medium of the high-pressure line. Each control unit comprises power lines for functional control of actuating mechanisms of shutting-off devices, throttle valve and safety valve, supplied by the said high-pressure line through pressure regulators, and made with possibility of controlling their operation through a time-stepped delayed command transmission for at least closure of each well in the logical sequence: "wing valve - casing valve - safety valve" - logical control line, linked to the fuse link and low- and high-pressure control valve and fitted with hydraulic control valves which can back up command transmission for closure of each well, one of the hydraulic control valves of which can transmit a command for closure of each well to the logical control line from the fuse link, the other from the low- and high-pressure control valve, and at least two others - from remote and manual control, respectively. The said delay system comprises delay mechanisms, fitted on sections for interaction of the logical control line and power lines for functional control of actuating mechanisms of the casing valve and safety valve, where the delay mechanisms comprise a hydropneumatic accumulator and a throttle, which provide for closure of the well at different times. The power functional hydropneumatic accumulator is essentially modular-sectional.

EFFECT: more reliable and accident-free operation the well, which is part of the oil and gas well pad, reduced cost of extracting oil and gas and much easier control of processes.

17 cl, 3 dwg

Control valve // 2366846

FIELD: gas and oil industry.

SUBSTANCE: invention relates to control valves and accessories to be used in gas and oil production. Proposed control valve comprises a body with central bore accommodating shut-off member, inlet and outlet branch pipes, and combined drive mechanism. The latter consists of two one-way mechanisms and one counter-propagating mechanism. Aforesaid shut-off member comprises one cartridge with two through holes and throttle blade representing a hollow cylinder with inner annular ledge. The latter features bearing faces equally spaced from outer faces of the throttle blade linked up with the rod. The rod stem accommodates aforesaid drive mechanisms. Mechanical or manual drive mechanism seats, partially, on the stem extension and is partially aligned with automatic mechanism of the rod backstroke. Combined drive housing has a profiled cover with a cup directed inside the said housing. Aforesaid stem is furnished with a device designed to convert rotary motion of aforesaid mechanical or manual drive into reciprocation of aforesaid rod.

EFFECT: reduced metal input, longer life and higher efficiency.

19 cl, 8 dwg

FIELD: oil and gas production.

SUBSTANCE: group of inventions refers to system and method of optimisation of production from oil or gas well by means of electric immersed pumps. The essence of the invention is as follows: according to inventions the following parametres of production on surface and in the borehole of well are controlled: pressure and temperature in a flow string, viscosity of fluid medium, rate of flow, pressure in a suction port and in a pressure port of the pump and temperature in the suction port of the pump. A system of detectors is used for control over parametres in the borehole of the well. Also the detectors are spaced in the well and they receive streaming of data on-line. According to the model of optimisation there are evaluated measured data obtained from plurality of parametres of production and plurality of well parametres. Operation of mechanism for artificial lifting is regulated on base of automatic evaluation of data and of their trends.

EFFECT: increased efficiency of production due to ability of timely elimination of potential problems adverse to production.

26 cl, 16 dwg

Oil and gas well // 2365738

FIELD: oil and gas production.

SUBSTANCE: invention is related to oil and gas industry, and in particular, to development of oil and gas deposits, and may be used for remote, automatic and manual control of actuating mechanisms of oil and gas well stop elements. Well comprises flow string with tubing string with underground operating equipment, which comprises operating packer, circulating and shear valves, and also remote-controlled isolating valve arranged with actuating mechanism, wellhead with equipment having flow string head, tube head, on which well-control equipment is installed, being arranged in the form of herringbone, including stop elements - above-root and side gate valves with actuating mechanisms, and also throttle valve adjacent to the latter for control of well debit, which is arranged with actuating mechanism, and control-monitoring elements - fusible insert and valve of low and high pressure control. Besides, well is connected to station of stop elements, throttle valve and isolating valve control, which includes pump-accumulator installation and control unit. Pump-accumulator installation includes pump group equipped for the first and second climatic zones by two parallel-connected high pressure pumps, one of which is arranged as duplicating one, and power functional pneumatic hydraulic accumulator of high pressure that communicates to pump group by working medium with high pressure line. Control unit includes power lines of functional control of stop element actuating mechanisms, throttle valve, isolating valve energised from mentioned high pressure line via pressure controllers for reduction of functional pressure to required value, and these power lines are used to control operation of listed components through system of command transmission stepped in time, at least for well closure, in logical sequence - "side valve - above root gate valve - isolating valve" - logical control line. It communicates with fusible insert and valve of low and high pressure control and is equipped with hydraulic distribution valves with the possibility of well-closure commands transmission duplication, one of which - for transmission of well closure command into logical control line from fusible insert, the other - from valve of low and high pressure control. Actuation of two other valves is intended from remote and manual control. Slowdown system comprises delay mechanisms installed on sections of logical control line interaction with power lines of functional control of actuating mechanisms of above-root gate valve and isolating valve, and the delay mechanisms include control pneumatic hydraulic accumulator and throttle, which provide for time-different response for well closure. Power functional pneumatic hydraulic accumulator is arranged as modular-sectional.

EFFECT: provides for improved reliability and faultless operation of oil and gas well, lower prime cost of oil and gas production and simplified control of well.

17 cl, 3 dwg

FIELD: oil and gas production.

SUBSTANCE: invention is related to oil and gas industry, and in particular to the field of oil deposit development, and may be used for remote, automatic and manual control of actuating mechanisms of oil deposit well stop elements. Complex of equipment for well control comprises station of well stop elements control - side and above-root gate valves, which are installed on well-control equipment, throttle valve for control of well debit, underground device that isolates oil flow in well, having actuating mechanisms, and also valve for control of low and high pressure and fusible insert. Besides, control station includes unit for control of actuating mechanisms of stop elements, pump-accumulator installation with working medium, power lines of functional control of mentioned actuating mechanisms and line of logical control. This line is made with the possibility of commands transmission for well closure in logical sequence "side gate valve - above-root gate valve - isolating device". For this purpose line is equipped with system of duplicate selective actuation from response of accordingly valve of low and high pressure control, fusible insert or remote or manual commands for closure of well stop elements. Mentioned line is also equipped with system of three-staged actuation in time with slowdown of executive command transmission to closure of above-root gate valve and underground isolating valve, which comprises mechanisms of command transmission delay tuned differently in time and installed on lines of logical control in sections of above-root gate valve and isolating device. These delay mechanisms consist of combination of control pneumatic hydraulic accumulator and throttle serially installed on specified sections. Power line of functional control of throttle valve actuating mechanism is equipped with three-way distribution valve with two electromagnets.

EFFECT: provides for improved reliability and faultless operation of oil pool well, lower prime cost of oil production and simplified control of well actuating mechanisms.

15 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to mining industry and can be used for exploiting oil fields through remote, automatic and manual control of well shutting-off devices. According to the method, a well can be controlled through opening and closing of shutting-off devices of an X-mas tree - wing and casing valves and an underground safety valve, as well as through regulation of well flow rate using a throttle valve. The well is connected to a control station, which comprises a pump-accumulator unit and a well control unit. The pump-accumulator unit comprises a group of pumps and a power hydropneumatic accumulator, linked through an actuating medium with a high-pressure line, which connects them to the well control unit. The high-pressure line is connected through reducing pressure regulators to power lines for functional control of shutting-off devices and the throttle valve. The station is equipped with a logical control line, which is connected to actuating mechanisms, providing for automatic command transmission for consecutive closure of the wing valve, casing valve, underground safety valve through delay mechanisms. Each delay mechanism has a control hydropneumatic accumulator and a throttle, adjusted for given delay of flow of actuating medium from the control hydropneumatic accumulator. The shut-off command arrives at the actuating mechanism of the wing valve first, then with given delay, to the actuating mechanism of the casing valve, after which, with given further delay, to the actuating mechanism of the underground safety valve. The logical control line is hydraulically linked to monitoring and control devices - a fuse link and a low- and high-pressure control valve. The monitoring and control devices are connected through the actuating medium, each to its trigger mechanism which controls pressure release in the given logical control line. The logical control line is doubly provided with similar trigger mechanisms for remote and manual triggering successive closure of the said well shutting-off devices in the said order.

EFFECT: more reliable and accident-free operation of an oil field, reduced cost of extracting oil, easier control of processes due to automated control of well shutting-off devices.

25 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to mining industry and can be used for exploiting gas-condensate fields through remote, automatic and manual control of well shutting-off devices. According to the method, a well can be controlled through opening and closing of shutting-off devices of an X-mas tree - wing and casing valves and an underground safety valve, as well as through regulation of well flow rate using a throttle valve. The well is connected to a control station, which comprises a pump-accumulator unit and a well control unit. The pump-accumulator unit comprises a group of pumps and a modular-sectional power functional hydropneumatic accumulator, linked through an actuating medium with a high-pressure line, which connects them to the well control unit. The high-pressure line is connected through reducing pressure regulators to power lines for functional control of shutting-off devices and the throttle valve. The station is equipped with a logical control line, which is connected to actuating mechanisms, providing for automatic command transmission for consecutive closure of the wing valve, casing valve, underground safety valve through delay mechanisms. Each delay mechanism has a control hydropneumatic accumulator and a throttle, adjusted for given delay of flow of actuating medium from the control hydropneumatic accumulator. The shut-off command arrives at the actuating mechanism of the wing valve first, then with given delay, to the actuating mechanism of the casing valve, after which, with given further delay, to the actuating mechanism of the underground safety valve. The logical control line is hydraulically linked to monitoring and control devices - a fuse link and a low- and high-pressure control valve. The monitoring and control devices are connected through the actuating medium, each to its trigger mechanism which controls pressure release in the given logical control line. The logical control line is doubly provided with similar trigger mechanisms for remote and manual triggering successive closure of the said well shutting-off devices in the said order.

EFFECT: more reliable and accident-free operation of a gas-condensate field, reduced cost and easier control of gas-condensate extraction processes.

25 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of a gas-condensate field through remote, automatic and manual control of actuating mechanisms of well shutting-off devices. The method involves drilling exploratory wells, field delineating and assessment of natural hydrocarbon resources. Single or pad forming production wells are drilled. Flow lines and gathering manifolds are laid down, as well as utility systems. A complex and preliminary gas-condensate preparation device is fitted. Production wells are fitted with an X-mas tree, which includes a wing valve and a casing valve. The wells are fitted with an underground safety valve and the flow line is fitted with a throttle valve and monitoring and control devices - fuse link and a low- and high-pressure control valve. The wells are operated while controlling gas-condensate extraction processes. Part of the production wells of the pad and field is connected to a station or unit of stations for controlling the X-mas tree and underground safety valve. Each of the said stations is fitted with a pump-accumulator unit and a control unit for well shutting-off devices, connected to it through an actuating medium. The pump accumulator unit is fitted with a group of pumps, supplied by a tank with actuating medium, and a modular-sectional power functional hydropneumatic accumulator, connected to a high-pressure line. The control unit is fitted with power lines for functional control of shutting-off devices, supplied by the said line through pressure regulators, and a logical control line for the said well shutting-off devices, connected to the shutting-off devices through trigger mechanisms, which control pressure. Well control is carried out with automatic provision for a logical shut-off sequence: wing valve - casing valve - underground safety valve, executed through delay systems.

EFFECT: more reliable and accident-free operation of a gas-condensate field, reduced cost of extracting gas-condensate, simpler process of controlling extraction processes due to automated control of shutting-off devices of output wells.

25 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of a gas field through remote, automatic and manual control of actuating mechanisms of well shutting-off devices. The method involves drilling exploratory wells, field delineation and assessment of natural hydrocarbon resources. Single or well pad forming production wells are drilled. Flow lines and gathering manifolds are laid down, as well as utility systems. A complex and preliminary gas preparation device is fitted. Production wells are fitted with an X-mas tree, which includes a wing valve and a casing valve. The well is fitted with an underground safety valve and the flow line is fitted with a throttle valve and monitoring and control devices - fuse link and a low- and high-pressure control valve. The wells are operated while controlling gas extraction processes. Part of the well pad and gas field is connected to a station or unit of stations for controlling the X-mas tree and underground safety valve. Each of the said stations is fitted with a pump-accumulator unit and a control unit for well shutting-off devices connected to it through an actuating medium. The pump-accumulator unit is fitted with a group of pumps supplied by a container with actuating medium and a power functional hydropneumatic accumulator, connected to a high-pressure line. The control unit is fitted with power lines for functional control of shutting-off devices, supplied by the said line through pressure regulators, and a logical control line for the said well shutting-off devices, connected to the shutting-off devices through trigger mechanisms, which control pressure. Well control is carried out with automatic provision for a logical shut-off sequence: wing valve - casing valve - underground safety valve, executed through delay systems.

EFFECT: more reliable and accident-free operation of a gas field, reduced cost of extracting gas, simpler process of controlling oil extraction processes due to automated control of shutting-off devices of output wells.

25 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used at development of gas-condensate field with usage of remote, automatic and unmanaged mode of sluices of well. According to method at deposit there are drilled and equipped producing welt clusters. In it there are installed production strings, introduced in them columns of tubing pipes, outfitted by subterranean production equipment, including pilot-controlled subterranean valve-clipper of gas, and control head, including production tree with sluices, including, not less than one side and one over-basic slide valves. It is mounted on trail throttle valve and it is installed supervisory control devices of system of emergency shutdown of well. These systems includes at least control valve of low and high pressure and filament. It is connected at least part of welt clusters of deposit to station and block of control stations for sluice of production tree and subterranean valve-clipper, which contains pump-and-accumulator station with force hydropneumatic accumulator and not less than one, tendering well control block with field lines and functional management of actuating mechanism for sluices. To it is bind logical control line, outfitted not less than three times duplicated starting mechanisms, including two from which operate from pulse, fed for closure of well at appearance of fire danger, or supercritical little or high pressure in trail. It is developed system of shutting-in of well in logical succession of fluid cutoff: "side valve - over-basic valve- subterranean valve-clipper", operating through the system of slowdown of command passing for closing. This system includes tandem consisting of controlling hydropneumatic accumulator and throttle in logical control line at sections of interaction with field lines of functional management for actuating mechanisms of over-basic valve and subterranean valve-clipper.

EFFECT: reliability growth and trouble-free operation of deposit, cost saving of products extraction, simplification of management of processes ensured by automated management of well's sluices.

25 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to exploitation of a gas-condensate field through remote, automatic and manual control of actuating mechanisms of well shutting-off devices. The method involves drilling exploratory wells, field delineating and assessment of natural hydrocarbon resources. Single or pad forming production wells are drilled. Flow lines and gathering manifolds are laid down, as well as utility systems. Complex and preliminary gas-condensate preparation equipment is fitted. Production wells are fitted with an X-mas tree, which includes a wing valve and a casing valve. The wells are fitted with an underground safety valve and the flow line is fitted with a throttle valve and monitoring and control devices - fuse link and a low- and high-pressure control valve. The wells are operated while controlling gas-condensate extraction processes. Part of the production wells of the pad and field is connected to a station or unit of stations for controlling the X-mas tree and underground safety valve. Each of the said stations is fitted with a pump-accumulator unit and a control unit for well shutting-off devices, connected to it through an actuating medium. The pump accumulator unit is fitted with a group of pumps, supplied by a tank with actuating medium, and a modular-sectional power functional hydropneumatic accumulator, connected to a high-pressure line. The control unit is fitted with power lines for functional control of shutting-off devices, supplied by the said line through pressure regulators, and a logical control line for the said well shutting-off devices, connected to the shutting-off devices through trigger mechanisms, which control pressure. Well control is carried out with automatic provision for a logical shut-off sequence: wing valve - casing valve - underground safety valve, executed through delay systems.

EFFECT: more reliable and accident-free operation of a gas-condensate field, reduced cost of extracting gas-condensate, simpler process of controlling extraction processes due to automated control of shutting-off devices of output wells.

25 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to mining industry and can be used in exploitation of an oil-gas field through remote, automatic and manual control of actuating mechanisms of well shutting-off devices. The method involves drilling exploratory wells, field delineating and assessment of natural hydrocarbon resources. Single or pad forming production wells are drilled. Flow lines and gathering manifolds are laid down, as well as utility systems. Complex and preliminary well fluid preparation equipment is fitted. Production wells are fitted with an X-mas tree, which includes a wing valve and a casing valve. The wells are fitted with an underground safety valve and the flow line is fitted with a throttle valve and monitoring and control devices - fuse link and a low- and high-pressure control valve. The wells are operated while controlling fluid extraction processes. Part of the production wells of the pad and field is connected to a station or unit of stations for controlling the X-mas tree and underground safety valve. Each of the said stations is fitted with a pump-accumulator unit and a control unit for well shutting-off devices, connected to it through an actuating medium. The pump accumulator unit is fitted with a group of pumps, supplied by a tank with actuating medium, and a power functional hydropneumatic accumulator, connected to a high-pressure line. The control unit is fitted with power lines for functional control of shutting-off devices, supplied by the said line through pressure regulators, and a logical control line for the said well shutting-off devices, connected to the shutting-off devices through trigger mechanisms, which control pressure. Well control is carried out with automatic provision for a logical shut-off sequence: wing valve - casing valve - underground safety valve, executed through delay systems.

EFFECT: more reliable and accident-free operation of a oil-gas field, reduced cost of extracting oil and gas, simpler process of controlling extraction processes due to automated control of shutting-off devices of output wells.

24 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to mining industry and can be used in exploiting oil fields through remote, automatic and manual control of actuating mechanisms of oil well shutting-off devices. According to the method, oil well pads are drilled on an oil field and equipped. In the production casings of these wells, tubing strings are made, fitted with underground production equipment and wellhead equipment. Production equipment comprises an underground device for cutting off flow of oil in the well. Wellhead equipment comprises an X-mas tree with shutting-off devices - wing and casing valves. A throttle valve is mounted in the flow line and monitoring and control devices are installed for the safety shut-off system of the well - low- and high-pressure control valve and a fuse link. The well pads are connected to a station or unit of a station for controlling shutting-off devices of the X-mass tree and underground cut-off device. The control station is provided with a pump-accumulator unit and is connected through an actuating medium to the control unit of well shutting-off devices. The pump-accumulator unit is fitted with a group of pumps supplied by a container of actuating medium and a power functional hydropneumatic accumulator, connected to a high-pressure line. The control unit is fitted with power lines for functional control of shutting-off devices and a logical control line for the said shutting-off devices connected to them through trigger mechanisms. Trigger mechanisms control on/off switching of pressure in the said functional control power lines. Oil extraction processes are controlled with provision for, if necessary, automatic well shutting off in the logical sequence: wing valve - casing valve - underground cut-off device with given gradually increasing delay of command transmission for closing the casing valve and underground cut-off device.

EFFECT: more reliable and accident-free operation of an oil field, reduced cost and simplification of the process of managing extraction of oil.

25 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to the mining industry and can be used in exploiting gas fields through remote, automatic and manual control of well shutting-off devices. According to the method, output wells are drilled in a gas field and are equipped with possibility of formation of exploited pads, which are fitted with production casings, and flow columns are built in them, fitted with underground production equipment, including a controlled gas underground safety valve, and wellhead equipment, which includes an X-mas tree with shutting-off devices, including at least a wing valve and a casing valve. A throttle valve which regulates well flow rate is mounted on a flow line. Monitoring and control devices for the safety shut-off system of the well are mounted, which comprise a low- and high-pressure control valve and a fuse link. At least part of the well pad and gas field is connected to a station or unit of a station for controlling shutting-off devices of the X-mas tree and underground safety valve, which contains a pump-accumulator unit with a power hydropneumatic accumulator and at least one control unit serving the well, with power lines for functional control of actuating mechanisms of shutting-off devices. The power lines are connected to a logical control line, which is provided with at least triple backed-up trigger mechanisms, two of them which are operated by a pulse, transmitted for shutting off the well in case of fire or critically low or high pressure in the flow line. A system has been designed for shutting off the well in a fluid cut-off logical sequence: "wing valve - casing valve - underground safety valve", which operates through a system for delaying transmission of the shut-off command. There is a tandem of the control hydropneumatic accumulator and a throttle in the logical control line in sections for interaction with power lines for functional control of actuating mechanisms of the casing valve and the underground safety valve.

EFFECT: more reliable and accident-free operation of a gas field, reduced cost of extracting gas, simplification of processes due to automatic control of well shutting-off devices.

25 cl, 3 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention relates to oil and gas industry, particularly to devices which provide for uninterrupted operation of oil or oil-and-gas wells, characterised by annular gas show. The wellhead check valve comprises a hollow body, fitted with a supply pipe for the main component - formation fluid, mainly oil, and a supply pipe for the released component, mainly annular gas, as well as a supply pipe for the mixture of the main and released components. An internal unit is mounted inside the housing of the check valve, with a cup-shaped body, which has one channel in its side wall for releasing annular gas. The check valve also includes a shutting-off device inside the cup, with movable and immovable parts and dividing its cavity into an inlet part in front of the shutting-off device and a working part behind the shutting-off device in the direction of flow of the annular gas, linked to the stream of formation fluid through a channel in the side wall of the cup. The shutting-off device is mounted in the cup and its immovable part rests on the side wall of the cup of the internal unit of the check valve.

EFFECT: provision for uninterrupted operation of the well due to the check valve, which can wash the cup of the internal unit of the check valve with warm formation fluid, virtually on the entire perimeter during the entire operation period, as well as provision for an optimum thermal mode for any unfavourable external conditions.

20 cl, 11 dwg

FIELD: oil and gas industry.

SUBSTANCE: device has hollow cylindrical body with conical aperture for letting through geophysical device with cable, replaceable pressurizing insert, mounted in aperture of body, fixed and containing upper circular segments. Two moveable compacting collars are made with possible radial displacement relatively to cable axis in the moment of cable pressurization. Moveable compacting collars are supported by lower circular segments, each of which is rigidly connected to rod, having threaded end, directed outwards and connected to pressing nut, providing for transfer of compacting collars into compressed state in case of well mouth pressurization. Also present is circular disk with longitudinal groove for inserting cable and outer surface, being in contact to surface of aperture of hollow cylindrical body. Threaded ends of rods are outputted outwards through circular disk. Aperture of hollow cylindrical body is made conical. In assembled form in moment of well mouth pressurization circular disk, moveable compacting collars and circular segments form a conical surface on the outside, matching conical aperture of hollow cylindrical body and are in contact with it. The insert is held by cylindrical stops.

EFFECT: simplified construction, higher reliability.

11 dwg

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