Method of simultaneous-separate liquid injection as per reservoirs with possibility to measure parameters of injected liquid and installation for its implementation

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

 

The invention relates to oil industry and can be used for dual injection into two layers with the possibility of distribution of the total injected volume of the layers in the desired proportions and performing the measurement of the parameters of the injected liquid.

The known method, selected as a prototype, which consists in the fact that in the hole on the column tubing - tubing down the layout, including the lower packer, switch, power distribution unit (injection - RPA, the upper packer, the disconnector. The lower part of the layout equipped with a funnel, or shank, and the upper part of the link extender. Over the lower and upper packers set the sub-centralizer. Establish and presoviet packers. Descend deep tube flowmeter with higher seats last. Serving the liquid in the tubing, determine the total flow rate. Lower the tube into the seat, serves the fluid in the tubing, determine the flow of liquid injected into the lower reservoir. Subtracted from the total flow rate and find the flow of liquid injected into the top layer. Compare the actual costs fluid reservoir with the specified values. When the difference raise the recoverable portion of the RPA to the surface. Establish upper and lower fittings in seats. Lower recoverable frequent� the RPA in the tubing prior to its landing in the housing portion of the RPA. Exercise adjustable fix the seams. To isolate one of the reservoirs is fitting install the plug. After the work is done lifting the unit.

The RPA includes a Cabinet portion, consisting of a nipple with several through channels, the housing and sleeve-sub, the extractable portion consisting of upper and lower bushings and diffuser. In the upper bushing and the diffuser is made seats for the upper and lower fittings or plugs. In the upper sleeve has a seat for the tube. In the lower bushing is made of upper and lower Central channels, diverging and converging channels (patent RF №2495235, publ. 10.10.2013).

The disadvantage of this method is the need of the bottom of the flowmeter to conduct only a single metering of the injected fluid without the possibility of registration of settings over an extended period, such as months. Also the disadvantages include the fact that when you disable one of the layers of possible errors due to changes in the mode of injection.

The technical result of the claimed method and installation is the ability to obtain information about the amount of pressure injection before and after each fitting over an extended period of time without the use of a large number additional in the�oriv and without changing the mode of injection, obtaining reliable data on the mode of injection required for the formation of the proper mode of wells, as well as improving the reliability of the technology.

The technical result is achieved by the implementation of the method to simultaneously separate pumping fluid through the reservoir with the possibility of measuring the parameters of the injected fluid, including the descent into the well column pipe installation consisting of a funnel-centralizer, the lower packer sub-centralizer, device distribution download, top retainer, extension, installation of the upper and lower packers, pressure test the annulus above the lower and upper packers, flow of fluid in a pipe string, the definition of cost of liquid to the seams, a comparison of actual flow rate of fluid layers with given values, rise when the difference between the recoverable portion of the device of the distribution of pumping on the surface with a fishing tool on the logging cable, wire or coiled tubing installation, the installation of seats in the extracted portion of the device of the distribution of pumping of the upper and lower fittings, descent recoverable portion of the device of the distribution of injection into the column of pipes on a logging cable, wire or coiled tubing installation to its landing in the housing part of the device for distribution of injection, the implementation of R�Guliyeva fluid injection, lifting the unit by the end of the work, according to the invention be equipped with a distribution device download top offline gauge located above the upper fitting, the average standalone gauge located below the upper fitting and the lower auxiliary gauge located under the lower fitting, the supply of liquid in the column of pipes, make measurements of pressure fluid injection before and after upper and lower fittings using the upper, middle and lower independent pressure gauges, fixed during injection, the pressure differential on the upper and lower fittings, calculated by the pressure drop liquid flow rate, injected in each layer, compare the actual costs fluid layers with predetermined values, when the actual expenditures from the specified values raise mineable part of a PDU injection together with auxiliary gauges and fittings to the surface by means of a fishing tool on the logging cable, wire or coiled tubing installation, replace the extracted portion of the device of the distribution of pumping of the upper and lower fittings, lowered on a logging cable, wire or coiled tubing installation mineable part of a PDU injection into pipe string prior to its landing in the housing of the device is distributed�I download produce a flow of fluid in a pipe string and conduct repeated measurements of the pressure fluid injection before and after upper and lower fittings.

To achieve the goal can be used the following particular solutions:

installation above the lower and/or upper packer is equipped with a disconnector mechanical or hydraulic principle of operation;

under the upper packer set sub-centralizer.

The technical result is achieved by the use of an installation for simultaneously separate pumping fluid through the reservoir with the possibility of measuring the parameters of the injected fluid comprising a funnel-centralizer, the lower packer, sub-centralizer device distribution download, upper packer, extension, according to the invention the device of the distribution of injection (e.g., UR-114) equipped with upper auxiliary pressure gauge mounted to the upper fitting, the average standalone gauge located below the upper fitting and the lower auxiliary gauge located under the lower fitting, the upper and lower fittings placed in the extracted portion of the device of the distribution of injection with the possibility of removal of the two fittings in one trip.

The scheme of installation for the controlled injection of fluid through the layers with the possibility of measuring the parameters of the injected fluid are presented�and Fig. 1. The scheme of distribution of injection (e.g., UR-144, manufactured by LLC NPF "Packer", Oktyabrsky) with auxiliary gauges and fittings are shown in Fig. 2.

The installation consists of lowered into the well 1 (Fig. 1) on the column of pipes 2 layout of underground equipment, including a funnel-centralizer 3 (for example, EC-73 production LLC NPF "Packer", Oktyabrsky), the lower packer 4 (for example, PRO-AMO-122 production LLC NPF "Packer", Oktyabrsky), the sub-frame 5 (for example, PC-124 production LLC NPF "Packer", Oktyabrsky), the distribution unit injection 6 (for example, UR-114 production LLC NPF "Packer", Oktyabrsky), upper packer 7 (for example, PRO-AUR-M-P-122 production LLC NPF "Packer", Oktyabrsky), extension 8 (for example, US-118 production LLC NPF "Packer",, October). Above the bottom 4 and top 7 packers may be set a disconnector (Fig. 1, not shown) by mechanical or hydraulic action principle. Sub-centralizer (Fig. 1, not shown) may be mounted below the upper packer 7. The lower packer 4 is provided with an axial mounting, upper retainer 7 is made with emphasis in the lower packer 4.

Funnel-centralizer 3 is intended to exclude damage geophysical instrument in research. The lower packer 4 serves to isolate the lower 9 and upper 10 layers. Sub-penny�ATOR 5 is designed for centering. Device distribution download 6 is intended for the distribution of the total volume of injected water in the lower 9 and upper 10 layers. Upper packer 7 serves to protect the casing from pressure pumping. The extension 8 is designed to compensate for changes of length of the column of pipes 2 in cyclic injection and temperature and pressure changes.

Device distribution download 6 (Fig. 2), consisting of Cabinet 11 and extracted 12 parts, is provided with an upper auxiliary pressure gauge 13, the average Autonomous pressure gauge 14 and the lower auxiliary pressure gauge 15. The upper 16 and lower 17 fittings installed into the removable portion 12 serves 6 with the possibility of removing both of the fittings 16, 17 in one trip. Top auxiliary gauge 13 is mounted above the upper nozzle 16, the average stand-alone pressure gauge 14 is mounted below the upper nozzle 16, the lower auxiliary pressure gauge 15 is mounted under the lower fitting 17.

The implementation of the method are given in the description of the operation of the equipment.

Before positioning the machine produce templating borehole 1 (Fig. 1) and cleaning the walls of the casing scrapers (scrapers) (Fig. 1, not shown), and then rinsing of the wellbore 1. Installing collected in the following sequence: funnel-centralizer 3, the lower packer 4, the sub-frame 5, the device distribution download 6, the upper packer 7, extension 8. Us�unavco despise or without withdrawable part 12 serves 6, either with her. Translate the packers 4, 7 in the operating position, then presoviet the annulus above the bottom 4 and top 7 packers. The supply of fluid in the pipe string 2. Make measurements of pressure fluid injection before and after top 16 and bottom 17 of the fittings through the top-13, medium 14 and bottom 15 standalone gauges. Fixed during injection, the pressure drop across the upper 16 and lower 17 fittings. Calculated by the pressure drop in a known manner the flow of fluid injected into each stratum. Compare the actual costs of liquid for the layers 9, 10 with the given values. When the actual costs from the specified values raise recoverable portion 12 serves 6 together with auxiliary gauges 13, 14, 15 and nozzles 16, 17 on the surface with a fishing tool on the logging cable, wire or coiled tubing installation (not shown in the figures). Replace the extracted portion 12 serves 6 top 16 and bottom 17 fittings. Then lowered on a logging cable, wire or coiled tubing installation recoverable portion 12 serves 6 with auxiliary gauges 13, 14, 15 and replaced the upper 16 and lower 17 fittings in the column of pipes 2 to its landing in the housing portion 11 serves 6.

Upon completion of work, transfer the top 7 and bottom 4 of the packer in the transport position by the tension of the tubing 2. Spend �Vice versa rinse for translation validation of packers 4,7 into the transport position and cleaning the planting packers 4, 7 from sand and mud. Begin lifting the unit after returning the sealing elements of the packer 4, 7 in a state that does not interfere with the rise.

The inventive method and apparatus for simultaneously separate pumping fluid through the layers allow to obtain information about the amount of pressure injection before and after each fitting over an extended period of time without using a large number of additional devices and without changing the mode of injection, to obtain reliable data on the mode of injection required for the formation of correct mode of operation of the well and increase the reliability of the technology.

1. Method of dual fluid injection on layers with the possibility of measuring the parameters of the injected fluid, including the descent into the well column pipe installation consisting of a funnel-centralizer, the lower packer sub-centralizer, device distribution download, top retainer, extension, installation of the upper and lower packers, pressure test the annulus above the lower and upper packers, flow of fluid in a pipe string, the definition of cost of liquid to the seams, a comparison of actual flow rate of fluid layers with given values, rise when the difference between the recoverable portion of the device of the distribution of pumping on the surface with a fishing tool negotiationson cable, the wire or coiled tubing installation, the installation of seats in the extracted portion of the device of the distribution of pumping of the upper and lower fittings, descent recoverable portion of the device of the distribution of injection into the column of pipes on a logging cable, wire or coiled tubing installation to its landing in the housing part of the device for distribution of injection, the implementation of the regulated injection of liquid, lifting the unit by the end of the work, characterized in that the supply device distribution download top offline gauge located above the upper fitting, the average standalone gauge located below the upper fitting and the lower auxiliary gauge located under the lower fitting, the supply of liquid in the pipe string, make measurements of pressure fluid injection before and after upper and lower fittings using the upper, middle and lower independent pressure gauges, fixed during injection, the pressure differential on the upper and lower fittings, calculated by the pressure drop, the flow rate of fluid injected into each layer, compare the actual costs fluid layers with predetermined values, when the actual expenditures from the specified values raise mineable part of a PDU injection together with auxiliary gauges and fittings for power�of using a fishing tool on the logging cable, the wire or coiled tubing installation, replace the extracted portion of the device of the distribution of pumping of the upper and lower fittings, lowered on a logging cable, wire or coiled tubing installation mineable part of a PDU injection into pipe string prior to its landing in the housing of the device distribution download, produce a flow of fluid in a pipe string and conduct repeated measurements of the pressure fluid injection before and after upper and lower fittings.

2. A method according to claim 1, characterized in that the installation above the lower and/or upper packer is equipped with a disconnector mechanical or hydraulic operation.

3. A method according to claim 1, characterized in that below the upper packer set sub-centralizer.

4. Installation for dual fluid injection on layers with the possibility of measuring the parameters of the injected fluid comprising a funnel-centralizer, the lower packer, sub-centralizer device distribution download, upper packer, extension, characterized in that the distribution device download feature top standalone gauge to the upper fitting, the average standalone gauge located below the upper fitting and the lower auxiliary gauge located under the lower fitting, the upper and lower fittings placed in �zvlecheniy part of the distribution device of the injection with the possibility of removal of the two fittings in one trip.



 

Same patents:

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: mining.

SUBSTANCE: proposed device comprises housing to accommodate the set of pressure and temperature gages, moisture metre and flow metre, electronics unit connected by logging cable, on one side, with surface control station and. On opposite side, with said gages, coupling unit with cable joint head and centring skid. Instrumentation module is secured at said housing by leverage, said module including inclination metre and extra gages, at least, moisture metre and flow metre connected with electronics unit. This module can reciprocate along the gravity vector between casing pipe and housing. It is located at casing pipe profile lower part by centring skid and coupling unit. It is equipped with housing turn drive and instrumentation module to turn them from gravity vector set by inclination metre via electronic unit.

EFFECT: registration borehole fluid interface boundaries and flow rate of every separate phase in conditionally horizontal wells.

4 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: aggregate includes lifting string, cable, liner, packers, electric immersed pump with check valve for product extraction with input unit and electric motor, a housing encasing the motor with cable and input unit and connected to the liner featuring several channels each entering a well section, pressure gauges with functional connection to aggregate control unit, switch valve with case and shutting unit, positioned downstream of the housing and connecting a well section with the housing space through respective channel. Switch valve features a stem with lengthwise channel connecting space under the valve to the housing, and the check valve is mounted in the lengthwise stem channel. The stem travels by a limited longitudinal path together with the check valve down under effect of differential pressure in the lift string and liner channel entering a well section, or up under effect of the produced fluid flow. The stem can engage with actuator that can open liner channels in turns while shutting the other channels upon each reciprocal travel of the stem.

EFFECT: enhanced efficiency of dual bed operation in a well.

5 cl, 3 dwg

FIELD: mining.

SUBSTANCE: method comprises pumping oil from a lower layer by the centrifugal pump with feeding under pressure of liquid jet ejector into the nozzle. Using this ejector the oil from the upper layer is simultaneously pumped with oil from the lower layer through the column of oil-well tubing to the wellhead. At that the oil from the lower layer is pumped to the nozzle of the liquid jet ejector with laminar flow of oil flow with low gas content. Pumping oil at the wellhead is carried out with a centrifugal pump with the pressure given by the condition of the pressure distribution on the rise of the oil masses from the lower layer to the nozzle of the liquid jet ejector and oil mixture from both layers along the column of oil-well tubing and the work of the liquid jet ejector. The flow cross-sections of the nozzle and the mixing chamber of the liquid jet ejector are set directly proportional to production rate of the lower layer and the production rate of both layers of the wells, respectively.

EFFECT: increase in reliability of operation of the well.

3 cl, 2 dwg, 1 ex

FIELD: oil and gas industry.

SUBSTANCE: pump packer system includes a packer lowered into the well and put between formations and a pump unit above it, which consists of an electric motor with a cable, hydroprotection, telemetering, lower and upper pumps with receiving stations and a casing with a cable entry, the upper end of which envelopes the receiving station of the lower pump, and the lower end is located below the electric motor. The system is provided with a housing and a branch pipe with side outlet channels, the first one of which is connected from above to the lower end of the casing, and the second one is connected from above to the electric motor and from below to the packer. With that, the branch pipe is compacted in the housing and thus disconnects the cavity of the casing from the upper formation and connects it through side outlet channels to the lower formation. With that, the branch pipe is provided for fluid of the lower formation either with a control controlled with the electric motor or with a flow meter or with a mechanical check valve. The upper pump is connected with the receiving station to the lower pump, and the latter that is located above the casing is connected with the receiving station to the hydroprotection of the electric motor. With that, the receiving station of the lower pump is made in the form of an inlet module or a gas disperser, and the receiving station of the upper pump is made either in the form of an inlet module provided with a longitudinal through internal channel for a fluid flow of the lower formation and a cutoff with a side inlet channel for the fluid flow of the upper formation, which is controlled by electric, electromagnetic or hydraulic action, or in the form of an inlet module or a gas separator provided from below with a branch pipe with side outlet channels at backside of the well for fluid flow of the lower formation. The packer is either of mechanical action and is installed by creation on it, without any transfer to the casing, of the specified value of axial load from the weight of the pipe string with further maintenance or removal of this load after tight fit of the packer, or is of hydraulic action, provided with a disconnector and installed between formations before the pump unit is lowered by creation inside the packer of excess pressure, or is of hydrodynamic action and provided inside the well with a pulse tube transmitting discharge pressure of the upper pump to the hydraulic cylinder of the packer, or is of electric or electromagnetic action and is connected to the electric motor.

EFFECT: improving reliability and efficiency of a pump unit at simultaneous and separate operation of two formations of one and the same well.

5 dwg

Downhole pump // 2549937

FIELD: oil-and-gas industry.

SUBSTANCE: proposed unit comprises mouth power unit, downhole hydraulic drive with moving stepped plunger connected with said power unit via hydraulic channels to transmit sign-variable load via drive medium thereto. Downhole pump is connected with flow string. Besides, it comprises extra downhole pump connected with extra flow string. Said plunger represents a three-step design. Hydraulic drive chambers arranged between plunger steps and its case have hydraulic communication with top and bottom borehole displacement pumps. Plunger steps are arranged in separate adjacent chambers connected with drive hydraulic channels. Plunger mid section and extreme sections are sealed at outlet from every adjacent section.

EFFECT: higher reliability and efficiency of well operation.

4 cl, 6 dwg

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to oil and gas industry, in particular to operation of the oil fields with high watercut of the produced product. As per this method the total number of field wells with high watercut is determined. Geometrical location of the source deposit in relation to the absorbing horizon is determined for each well. Injectability of the absorbing horizon is determined for each well. Day volume of produced water is determined for each well. Based on the obtained data, at least on the geometrical location of the source deposit in relation to the absorbing horizon, and on condition that injectability of the absorbing horizon exceeds the day volume of the produced water, the type of double action pump system is determined. This is determined for each well on condition to ensure the further injection of the produced water to the absorbing above or below deposit. During injection of the produced water to the above deposit less volume is supplied to the flowline in comparison with volume pumped out using the well subsurface pump unit. Under wellhead tee the additional seal of the wellhead stock is installed to accept pressure. During injection of the produced water to the below deposit the subsurface pump unit is equipped with tail and additional plunger for water linked with main plunger and ensuring the possibility to overcome the absorbing deposit pressure. At least one field well with high watercut is operated using the bottomhole pump unit with definite pump system.

EFFECT: increased operation efficiency due to use of more effective gravity separation of water and oil in well.

4 cl, 4 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to production of hydrocarbons from several beds and to their mixing. Well tool consists of several tubular sections connected by a new thread-less linear connection system. Cylindrical walls of adjacent walls are provided with channel for electrical conductors for connection of electronic components in the tool different sections.

EFFECT: maintenance of barometric pressure inside well tool.

32 cl, 14 dwg

FIELD: oil and gas industry.

SUBSTANCE: device includes a pipe string provided with filters and packers on the outside, made in the form of plasters installed considering length of zones with the corresponding permeability. One of the ends of the packers is rigidly fixed on the pipe string, and the other one has a possibility of being moved along the pipe string and is connected to a protective perforated casing installed on the outside of the filter so that it shuts off its holes and can align holes of the filter and the casing due to displacement of the casing at straightening of the plasters under action of liquid pressure. Plasters are sealed on the outside and interconnected from inside with the pipe string through a check valve installed on the interconnecting hole. When the device is being lowered, the lower filter remains open, and after it is fixed in a production casing, it is closed and plasters are straightened and fixed in the well by creation of liquid pressure. Check valves are made so that straightening of plasters is excluded at lowering of the device with flushing.

EFFECT: enlarging technological capabilities; preventing contamination and disturbance of integrity of filters.

2 dwg

FIELD: mining.

SUBSTANCE: device contains branch pipes with holes located opposite to each of the productive beds or zones with different permeability which are tightly separated from each other by packers. Each group of holes is fitted with valves with seats spring-loaded from below that are fitted with sealing rings along the external surface. The device contains a guiding pin which is rigidly fixed and designed with a possibility of interaction and movement under the effect of difference of pressure along the closed groove made outside of the seat designed as alternating short and long grooves for closing and opening of holes of the branch pipe. The seat is inserted into the respective branch pipe with pin and designed as two bushings connected by a sleeve with sealing rings, the upper one of which is designed with a bigger outer diameter, and the lower one is fitted with one or several lateral holes located between sealing rings and designed with a possibility of interconnection with holes at pin arrangement in short or long cavity of the groove which is made on external surface of the hollow barrel placed outside of the sleeve with a possibility of rotation, and the spring is installed outside of the barrel between bosses, the lower one of which is fixed with reference to the branch pipe, and the top one - with reference to the valve seat.

EFFECT: improvement of reliability of the device design.

2 dwg

Wellhead equipment // 2546707

FIELD: oil and gas industry.

SUBSTANCE: wellhead equipment includes pipe supports of the first and second rows of pipes, a seal nipple of the first row and samplers. The seal nipple is made as a bushing with conical surfaces at ends. In the pipe supports of the first and second rows there are bevelled edges made so that they may interact in a sealed way with the conical surfaces of the seal nipple. Each sampler is made as a hollow blinded cylinder with a piston; it is also equipped with an adjusting device generating counter pressure. The adjusting device may be used as an adjustable valve or as dead weights installed at the piston or cylinder.

EFFECT: simplifying the installation of the seal nipple, improved quality of the taken sample and exclusion of welding operations at the well head for welding of sampling cocks with branches.

4 cl, 2 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: in compliance with first version, this plant comprises tubing, parker separating the top and bottom beds, Downhole two-way motor tightly connected with electric cable. Said motor is coupled by driven shafts with top and bottom rotary pumps. Top rotary pump is connected from below with intake module provided with lateral fluid intake channels and bottom rotary pump with outlet connected with said tubing. Parker barrel is connected from below by shank with filter to intake fluid from bottom seam and from above with bottom rotary pump inlet. The latter is provided with outlet module connected to Downhole motor bottom. Outlet module houses lower drive shaft and downhole motor hydraulic protection device. Intake module of top rotary pump is provided with extra well filter and connected to downhole motor from above. Inlet module houses upper drive shaft and downhole motor hydraulic protection device. Top rotary pump features output equal, at least, to total capacity of both well seams at equal rpm of motor shafts. Upper rotary pump comprises several sections to up fluid lift pressure in aforesaid tubing. In compliance with second version, downhole motor is additionally provided with jacket connected from above with upper pump- intake module to make the motor cooling chamber with fluid feed from below from behind-the-packer annulus and discharge via lateral channels of intake modulus to upper rotary pump.

EFFECT: higher reliability.

4 cl, 2 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: device has operation columns of upper and lower well zones, placed eccentrically one inside the other in upper zone of well, double airlift column, mounted in upper well zone, and double airlift column, connected to operation well of lower well zone, separation column, mounted coaxially to operation column of upper well zone, and cementation pipe. According to invention, in a well with significant power of non-productive zone it is equipped with additional separating column with cleaning channels for lowering drilling tool therein and drilling well to lower well zone with removal of drilling slurry by double airlift column of upper zone through cleaning channels. Additional separating column is combined coaxially with operation column of lower well zone and is rigidly fixed to separation column.

EFFECT: higher efficiency.

1 dwg, 3 cl

Up!