Downhole controlled electromechanical valve

FIELD: oil and gas industry.

SUBSTANCE: invention relates to technology of oilfield equipment and can be used for simultaneous-separate exploitation of seams and during current repair of wells without their killing. Valve consists of a casing, a sub-box with a typical connecting connector or with a wet contact connector, a micro electric motor powered from “zero point” of ESP motor, a reducer with a screw, a hollow rod with a passageway for measuring the pressure in the formation, differential piston, leveling well and reservoir pressure, auxiliary and controlled valve, to which the choke tube with internal gap is hermetically connected, in which the formation pressure measuring tube passes, docked with the passageway in the hollow stem and hermetically connected to the auxiliary valve. Socket tube is made from above with radial holes, and from bottom - with teardrop-shaped fittings and is damped with a sealed plug inside which lower end of tube for measuring formation pressure passes. Against the unions in the nipple is a groove, hydraulically connected through the fittings with the inlet channels in the nipple.

EFFECT: technical result is to ensure a reliable and smooth regulation of well production rate and to measure formation pressure during operation of formation.

1 cl, 4 dwg

 



 

Same patents:

FIELD: oil and gas industry.

SUBSTANCE: installation comprises underground equipment assembly run in the well using the pipes string, including funnel-positioner, lower packer, reducer-positioner, device of injection distribution, top packer, extension. Device of injection distribution contains casing and removable parts, is equipped with to independent pressure gauge, middle independent pressure gauge, and bottom independent pressure gauge. Top and bottom unions are installed in the removable part of the device of injection distribution with possibility of both unions removal by one round run operation.

EFFECT: assurance of possibility of information acquisition on injection pressure upstream and downstream each union for long time period, reception of reliable data on injection mode, increased process reliability.

4 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: installation consists of a liner with blind, overflow valves, packer, connecting and disconnecting device, junk basket, electric valve with latching mechanism equipped with pressure transducer, submersible motor supplied by electricity through a cable, submerged telemetry unit connected by electric circuit through windings of the submersible motor and cable with control station and data receipt and processing unit. Knock-off valve and return valve are placed above the electrically operated pump. The installation comprises a unit that excludes impact of the submersible motor to power supply line of the electric cable, to data measurement and receipt.

EFFECT: improved efficiency of reservoir parameters measurement at the well survey, efficiency of electric valve control, optimised production in real-time mode.

8 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: method of a well bore zone treatment for a productive formation that includes running in of an in-series bottom-up mounted hydroimpulsive device and a jet pump at the pipe string to the well. Fluid is delivered to the hydroimpulsive device and this fluid is used for an impact on the well bore treatment zone with simultaneous pumping the fluid with colmatage particles by the jet pump to the surface. A depth gauge is mounted additionally at the tubing string in front of the hydroimpulsive device. At that a rotary hydraulic vibrator is used as the hydroimpulsive device to create a water jet and pulse-cavitating flow along the perforation interval. An impact on structures of the formation with fluid is made by the excitation of resonant oscillation of the fluid column in the well due to matching of the ripple frequency of the rotary hydraulic vibrator and own resonance frequency of the casing string with the fluid, placed below the rotary hydraulic vibrator and being a resonator of an organ pipe type. The required oscillation frequency f, Hz, is determined by the specified mathematical expression.

EFFECT: improved efficiency of performed surveys and treatment of the well bore zone of the formation with a combined water-jet effect on perforated openings or filters of the production casing and the pulse-cavitating flow to the formation structure with fluid and monitoring of the treatment parameters.

2 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to the oil-extracting industry and can be used on oil deposits for measuring formation pressure for controlling and managing the oil extraction process. The method involves measuring the formation pressure in an oil producer equipped with a submerged electric-driven pump. A calculation process involves using a fluid influx point from the formation to the well via a known uniform-density damping fluid when commissioning the well after the damping procedure by formula.

EFFECT: reducing a surveyed well downtime, increasing the accuracy and reliability of determining the foundation pressure, and facilitating the implementation when commissioning the well after damping.

2 dwg

FIELD: mining.

SUBSTANCE: according to the method, a casing string with temperature sensors attached to its outer surface is lowered to a well and cement is pumped to an annular gap between the casing string and well walls. During a cement filling and hardening process, temperature measurements are made and thermal conductivity of surrounding mine rocks of the well is determined as per the measured relationship between temperature and time.

EFFECT: possibility of simultaneous reception of information on properties of a relatively thick layer of rocks around the well and information on thermal conductivity of rocks for the whole cemented interval of depths.

3 cl, 2 dwg, 1 tbl

FIELD: oil and gas industry.

SUBSTANCE: device includes a mechanical oscillating system with constant magnets fixed on it and a converter of mechanical oscillations to electrical ones. A mechanical oscillating system is made in the form of a cylindrical bimetallic spiral, one end of which is rigidly fixed, and the other one is free, and the converter of mechanical oscillations to electrical ones is made in the form of a system of interacting electromagnetic fields of constant magnets rigidly fixed on a cylindrical bimetallic spiral and coils of a drive and pickup of oscillations providing for transverse oscillations of the cylindrical bimetallic spiral.

EFFECT: enhancing reliability of a device and improving its design.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention is related to the area of wells completion and testing in oil industry and intended for calculation of parameters for the well bottomhole and bottomhole area. The method where in process of string movement in the well pressure is measured by two sensors, at that one sensor is installed over the packer while the second one is installed below the packer. According to results of pressure measurement fluid density is determined and then flowing bottomhole pressure is determined on the basis of fluid density, gravity constant, preset rate of drilling string motion, cross-sectional area of the drilling string, formation pressure, and productivity index of the well.

EFFECT: potential determination of parameters for the well bottomhole and bottomhole area during round-trip operations with further calculation of liquid influx/reflux at the bottomhole and calculation of skin factor, permeability or thickness of the reservoir.

13 cl, 5 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: evaluation of fluid inflow fraction from every productive zone of multi-zone productive well comprises determination of pressure at wellhead. Integrated indicator curve (IPR1) is obtained to describe the relationship between pressure and fluid yield from first productive zone and integrated indicator curve (IPR2) is obtained to describe the relationship between pressure and fluid yield from second productive zone. Value for integrated indicator curve at the point of mixing (IPRm) is obtained with the help of IPR1 and IPR2. Initial fluid inflow fraction from first productive zone at mixing points and initial fluid inflow fraction from second productive zone are defined. First total curve of outflow (TPR1) is obtained describing the relationship between fluid pressure and yield, fluid flowing from mixing point to wellhead. First portion of fluid inflow from first productive zone (Q11) and first portion of fluid inflow from second productive zone (Q21) are defined at mixing point with the help of IPRm and TPR1. Machine-readable carrier accessible for processor comprise program including instructions for above listed jobs.

EFFECT: more efficient evaluation of the portion of influx from productive seam.

20 cl, 5 dwg

FIELD: measurement equipment.

SUBSTANCE: system (100) of sensors for measurement of a technological parameter of a fluid medium in a well location, comprising a resonator (110) of a parameter, which is located in a well (106), having resonance frequency that varies depending on the technological parameter of the fluid medium and which in response generates a resonant acoustic signal on the resonance frequency that indicates the technological parameter. Besides, the system comprises an acoustic sensor (118), arranged in the location near above the surface, spaced from the parameter resonator, a measurement circuit (102), connected with the acoustic sensor, and an acoustic source connected with a pipe in the location near above the surface and spaced from the parameter resonator placed in the well. At the same time the acoustic sensor is made as capable of receiving the resonant acoustic signal, transmitted from the parameter resonator, the measurement circuit is arranged as capable of formation of an output signal of the technological parameter, corresponding to the technological parameter of the fluid medium, in response to the received resonant acoustic signal, and the acoustic source is arranged as capable of transmission of the acoustic signal into the well.

EFFECT: provision of measurement of well fluid medium properties in real-time mode both in process of drilling and in process of well operation.

20 cl, 6 dwg

FIELD: oil and gas industry.

SUBSTANCE: the method is realized in two stages. At the first stage to the lower horizontal producer a flow string is run in to the beginning of a slotted filter. A heat insulated filter is set in the upper horizontal injector above the slotted filter. In the upper horizontal injector temperature tests are made in the interval from the well head up to the packer. Steam is injected to the lower horizontal producer and temperature tests are made simultaneously in the upper horizontal injector. Upon completion of steam injection to the lower well the final temperature test is made in the upper well. At the second stage fresh water is injected to the upper horizontal injector and a heat insulated flow string is run in with a thermal packer and shank. The packer is set before the slotted filter and control temperature test is made in tubular annulus in the interval from the well head up to the packer. Steam is injected to the upper horizontal injector though the heat insulated flow string, through the packer and shank to the beginning of the slotted filter. At that, periodically, upon commencement of injection, temperature tests are made in tubular annulus in the interval from the well head up to the packer. Upon completion of steam injection the final temperature test is performed in the upper horizontal injector. When required, tests in the lower producer and operational procedures for the wells are interchanged.

EFFECT: improving authenticity of the obtained results during identification of intervals with cross flows behind the casing for wells operated in deposits of viscous and superviscous oil.

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to oil industry and can be used for operation of flowing gas and oil wells. This device consists of the case fitted in discharge pipe axial channel while male adapter with lengthwise grooves and needle holder is fitted in said case. Case opposite side is equipped with barrel provided with circular ledges to make a circular chamber with said case. Said chamber accommodates spring-loaded circular piston with end valve resting on seat at circular ledge end face. Circular piston and end valve make with the case the circular chamber communicated hydraulically via several bores in the case body with circular channel between said case and discharge pipe. Pusher is arranged inside circular chamber to rest on circular piston and equipped with holder with nozzle pressed by the nut to make a sliding joint with needle holder. Barrel body has radial bores for connection of circular chamber under circular piston with the barrel axial channel overlapped at initial position of end valve body. Said barrel is equipped with adjusting nut for spring hold down. Circular chamber between said barrel and pusher is communicated by drain bore with barrel axial channel.

EFFECT: lower hydraulic drag, higher reliability of structure.

2 dwg

FIELD: oil and gas industry.

SUBSTANCE: multiple downhole tools can be driven between operating positions. Downhole tools are connected to a variety of multitapped modules, at that each multitapped module is connected usually to one or downhole tools. Control lines are connected to multitapped modules, and multitapped modules are capable to control downhole tool in bigger quantity than quantity of control lines. Each downhole tool is driven individually delivering pressure through one or several control lines.

EFFECT: facilitating control over multiple downhole tools.

23 cl, 25 dwg

FIELD: oil and gas industry.

SUBSTANCE: needle valve for pressure gage contains a body (1) connected indirectly to rod (2) equipped with threaded seat (3) at one end. At that in the body (1) there is ball seal valve (10) of chevron-type, main bush (9). The latter one is connected to the body by means of a connecting element 12. Besides, the body (1) is connected by means of threaded joint to fastening element (5), which is connected by circular grooves and locking ring with rod (2). Besides body (1) is equipped with bleed-off valve (15).

EFFECT: improving accuracy of pressure gage readings, tightness, durability and reliability of design.

3 cl, 3 dwg

Cutoff valve // 2484236

FIELD: oil and gas industry.

SUBSTANCE: cutoff valve consists of a body connected to a pipeline by means of a flange connection, a thread, a quick-detachable connection, a bayonet connection; a seat of the valve in the form of plane, a cone from elastic material or that combined with metal, plastic; a shutoff element in the form of a ball, a plate; a conical or a flattened cylindrical multi-sided prism from material with density that is higher than that of oil or oil products and lower than water density or in combination with light-alloy material; a guide and a cell from metal, elastic plastic or their combination with a thrust against the housing on elastic surface, which is spring-loaded, or their combination. In the tank on the suction line of individual liquid pumping-out pipelines there installed are at least two cutoff valves at different levels. Besides, on individual liquid pumping-out pipelines there installed are liquid pressure sensors, which are electrically connected to a pumping-out control automation system.

EFFECT: improving reliability of separation of two-phase liquids; simplifying the design.

2 dwg

FIELD: oil and gas production.

SUBSTANCE: system for use in the hole includes the string designed for location in the hole that consists of submersible electric pump, the first part of inductive coupler and completion section. Note that completion section is located in the well zone under development and includes the second part of inductive coupler, isolating packer, detection cable and electric device electrically connected to the second part of inductive coupler. Note that detection cable goes through the packer for provision of sensors to some well zones.

EFFECT: increase of system operation efficiency and collection of measurement data referred to the well characteristics.

28 cl, 7 dwg

FIELD: oil and gas industry.

SUBSTANCE: well of hydrocarbon raw material deposit, either gas one or gas-condensate one, includes production string with tubing string with underground operating equipment. Operating equipment includes at least a cutout valve with remote control, which is provided with an actuator, and well head with wellhead equipment. Wellhead equipment comprises casing head, tubing head on which there mounted is X-tree in the form of a fir tree, which includes shutoff members - master and side gate valves with actuators, as well as throttle valve adjacent to the latter, which controls the well flow rate and is provided with an actuator, and monitoring and control members - fuse insert and gas line pressure monitoring valve. Well is connected to control station by means of shutoff members, throttle valve and cutout valve. Control station is made in the form of a cabinet and includes pump accumulator plant and at least one control unit per well.

EFFECT: improving reliability and accident-free operation of gas well and simplifying the control of processes.

12 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: opening and closing of shutoff-control valves of well cluster is performed by independent supply of working medium to actuators of shutoff-control valves and underground cutout valves in the specified sequence, as well as valves controlling the flow rate of each well. Method is implemented by means of control station mounted in the cabinet and including instrumentation and control, as well as hydraulic system. Hydraulic system includes pneumatic hydraulic pressure accumulators combined with working medium tank, pumps, pressure controls and multiplying gears, and has the possibility of controlling actuators of shutoff-control valves with time delay and in certain sequence. At that, in addition, control lines of loop and flare gate valves are mounted in cabinet of the station, which are installed on pipelines in close proximity to control cabinet, for example on one common frame.

EFFECT: invention simplifies mineral deposit production control process, as well as allows reducing the area occupied with process equipment.

21 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: single wells or wells forming clusters are drilled; production wells are equipped with wellhead equipment with X-tree including at least one side gate valve and one master gate valve, as well as underground cutout valve and throttle valve and monitoring and control members, which are installed on the loop, for example, fuse strip and gas line pressure monitoring valve. Operation of the well is performed at simultaneous control of production processes of hydrocarbons by means of the station. Control processes involve opening and closing of shutoff-control valves of well cluster by independent supply of working medium to actuators of shutoff-control valves, as well as flare and loop gate valves, which are arranged on pipelines in close proximity to control cabinet, for example on one common frame with control cabinet. Opening of shutoff-control valves of each well is performed in the following way: underground cutout valve, master gate valve, loop gate valve, side gate valve; closing is performed in the reverse order.

EFFECT: improving operating reliability of shutoff-control valves.

3 cl, 5 dwg

FIELD: oil and gas industry.

SUBSTANCE: well cluster includes at least two wells. Each well includes underground operating equipment containing cutout valve and wellhead equipment having casing head, tubing head on which there mounted is X-tree including shutoff members - master and side gate valves. Well cluster is connected to control station of actuators of shutoff members, which is made in the form of a cabinet. Control station includes power lines of function control of shutoff members' actuators. In addition, control lines of loop and flare gate valves are mounted in the cabinet. Loop and flare gate valves are installed on pipelines in close proximity to control cabinet, for example on one common frame.

EFFECT: reducing the surface area occupied with the equipment and increasing cluster operating safety.

12 cl, 5 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production meant for control of inhibitor supply into natural gas streams, for prevention hydraling process in it. The system consists of pump with drive, pressure collector, pipeline for inhibitor withdrawal from collector, pressure stabilisation independent loops, one of which formed with pressure control instrument in pressure collector, its outlet connected with frequency transformer automatic controller, which its outlet connected with pump drive. The second stabilisation loop forms direct action pressure control block, included in group of withdrawal devices between pressure collector and production devices.

EFFECT: broadening of inhibitor streams control system functionality, supplied through independently controlled canals in every point.

1 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production meant for control of inhibitor supply into natural gas streams, for prevention hydraling process in it. The system consists of pump with drive, pressure collector, pipeline for inhibitor withdrawal from collector, pressure stabilisation independent loops, one of which formed with pressure control instrument in pressure collector, its outlet connected with frequency transformer automatic controller, which its outlet connected with pump drive. The second stabilisation loop forms direct action pressure control block, included in group of withdrawal devices between pressure collector and production devices.

EFFECT: broadening of inhibitor streams control system functionality, supplied through independently controlled canals in every point.

1 dwg

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