RU196417U1 - Borehole Jet Installation - Google Patents

Abstract

The downhole jet installation allows to increase fluid production and increase the energy efficiency of the well and, accordingly, the development efficiency of one or more production facilities with low reservoir pressure and high gas factor, while the downhole jet installation includes a pipe string on which the jet pump is located, and control instrument connected via a communication cable to a control and information exchange system with the possibility of transmitting pressure data to a control system the exchange of information located at the wellhead further comprises a pressure device configured to supply a pressure working agent to the jet pump, two measuring instruments that are installed with the possibility of simultaneous measurement of pressure parameters in the selection zone and in the suction zone of the jet pump, it is equipped with an additional instrumentation installed with the ability to measure the differential pressure between the extraction zone and the suction zone of the jet pump, additionally wearable instrumentation installed with the ability to measure well parameters, an additional jet pump installed with the possibility of simultaneous and separate operation of several development objects, an additional tubing lift, and is also equipped with a packer, while the pressure device is configured to supply a pressure working agent to a jet pump along a pipe string, a pressure device configured to supply a pressure working agent to a jet pump along an intern I’ll kill you, the control device is a pressure sensor, the control device is a differential pressure gauge installed with the ability to measure the pressure difference between the selection zone and the suction zone of the jet pump. 9 s.p. f-ly, 5 ill.

Description

The utility model relates to the oil and gas industry, namely to borehole submersible pumping units, preferably intended for operation in the oil and gas industry - to borehole exploitation of hydrocarbon deposits, and in particular to technology and equipment for producing hydrocarbons from wells.

Known Well pumping installation, consisting of a jet pump installed on a tubing string and a control and measuring device (RF patent No. 2239729, F04F 5/54, publ. 10.11.2004)

The disadvantages of the above solution is the insufficient use of measuring instruments: only for the study of the reservoir and pressure in the selection zone of the jet pump, the absence of sensors in the mixing chamber or the receiving chamber of the jet pump does not provide objective information about the efficiency of the jet pump, the choice of its operating modes, as well as the lack of recommendations by changing the operating mode of the jet pump.

The closest analogue is a downhole jet installation, including a tubing string on which the jet pump is located, and a control and measuring device connected via a communication cable to a control and information exchange system with the possibility of transmitting pressure data to a control and information exchange system located on wellhead (RF patent No. 2693119, F04D 13/10, F04D 15/00, F04F 5/54, E21B 43/14, E21B 43/12, publ. 01.07.19, prototype).

The disadvantage of the above solution is the lack of a non-return valve separating the intake zone from the extraction zone, the non-return valve prevents overflow in the absence of a pressure agent in the nozzle of the jet pump, as well as insufficient information about the operating modes of the jet pump, it is impossible to assess whether the pressure in the zone exceeds and how much selection above the pressure in the mixing chamber and the receiving chamber, since the control and measuring devices are not installed in the selection zone of the jet pump, which made it possible to obtain information On the change in the pressure difference and, accordingly, objective information on the operation of the jet pump, on the suction process, also on the change in the pressure difference between the fluid extraction zone and the suction zone of the jet pump, one can judge the operation of the non-return valve, if the pressure difference is constant (const), then this usually indicates a jamming of the non-return valve, or an excess of pressure in the intake chamber over the pressure in the extraction zone, since the suction process through the non-return valve is a pulsed process with a constant change differential pressure and is associated with constant movements of the non-return valve, the pressure drop can also be used to monitor the tightness of the non-return valve when the supply of pressure agent to the nozzle of the jet pump is stopped.

There is no complete information on the operating modes of the jet pump, there is no information on the presence or absence of the suction process by the jet pump from the sampling zone, since there is no information on the presence or absence of a pressure differential between the suction and selection zones, since there is no sensor that records the pressure in the sampling zone, the sensor must located in the jet pump behind the non-return valve. Only information on the change in pressure difference will give an objective picture of the operation of the jet pump, the suction process. In addition, by changing the differential, you can judge the operation of the non-return valve, if the pressure difference is constant const, then this usually indicates a jamming of the non-return valve, or an excess of pressure in the intake chamber over the pressure in the extraction zone, since the suction process through the non-return valve is a pulsed process with a constant change in pressure drop, associated with constant movements of the check valve. The differential can also track the tightness of the check valve when the supply of pressure agent to the nozzle is cut off.

The objective of the claimed technical solution is to increase the optimization of production and the efficiency of the well through the use of instrumentation for simultaneous measurement of pressure in the extraction zone and in the suction zone of the jet pump, with the ability to track changes in real time and control pressure parameters in these zones .

The essence of the proposed technical solution is to optimize the operation of the well, to increase the efficiency of the development of one or several production facilities with low reservoir pressure and high gas factor through the use of a jet pump and instrumentation that measure pressure in the selection zone and in the suction zone of the jet pump in real time.

The task is achieved in that the downhole jet installation includes a pipe string on which the jet pump is located, and a control instrument connected via a communication cable to the control and information exchange system with the possibility of transmitting pressure data to the control and information exchange system located at the mouth wells, further comprises a pressure device configured to supply a pressure working agent to the jet pump, two measuring instruments, which are installed lenas with the possibility of simultaneously measuring pressure parameters in the extraction zone and in the suction zone of the jet pump, while it is equipped with an additional control and measuring device installed with the ability to measure the pressure difference between the selection zone and the suction zone of the jet pump, additional control and measuring devices installed with the ability to measure downhole parameters, an additional jet pump installed with the possibility of simultaneous and separate operation of several objects The development unit is equipped with an additional tubing elevator and is also equipped with a packer, while the pressure device is configured to feed the pressure agent to the jet pump through the pipe string, the pressure device is configured to feed the pressure agent to the jet pump through the annulus, instrumentation represents a pressure sensor, the control instrument is a differential pressure gauge installed with the ability to measure the differential pressure between the selection zone and the jet pump suction zone.

In FIG. 1 shows a downhole jet installation, which consists of a jet pump with a removable liner and a deep electric pump installed on the tubing, which is lowered into the well with one reservoir, the jet pump and a deep electric pump are connected to a control and information exchange system, two stationary monitoring and measuring instruments with a communication cable with a control and information exchange system, the first (upper) control and measuring device is installed with the ability to measure pressure in the suction area of the jet pump and the second (lower) control and measuring device is installed with the possibility of measuring pressure in the fluid sampling zone, a check valve is located in the suction channel, which is part of the intake chamber, separating the receiving chamber and the suction channel from the sampling zone, in FIG. 2 shows a downhole jet installation containing an inkjet pump, a packer and a deep electric pump installed on a tubing, which is lowered into a well with two layers, a jet pump and a deep electric pump are connected to a control and information exchange system, four stationary-placed instrumentation connected a communication cable with a control and information exchange system, the first (upper) additional control and measuring device is a sensor installed with the ability to measure pressure fluid at the outlet of the jet pump, the second control and measuring device is a pressure gauge installed with the ability to measure pressure in the suction area of the jet pump, the third control and measuring device is a sensor installed with the ability to measure pressure in the fluid withdrawal zone, fourth (lower) an additional control and measuring device is a sensor installed with the ability to measure the fluid pressure at the inlet to the jet pump, in the suction channel is located a check valve separating the receiving chamber and the suction channel from the fluid withdrawal zone, the jet pump, instrumentation are located above the packer and above the deep electric centrifugal pump for simultaneous and separate operation of two development facilities separated by a packer, while the electric pump produces fluid from the lower reservoir, and the fluid from the upper formation is sucked in by the jet pump, in FIG. 3 shows a downhole jet installation comprising a jet pump and a packer installed on a tubing that is lowered into a well with one formation, two stationary monitoring and measuring devices connected by a communication cable to a control and information exchange station, and the first (upper) measuring and measuring device represents a manometer installed with the possibility of measuring pressure in the suction zone, and the second (lower) control and measuring device is installed with the possibility of measuring pressure in the zone of fluid selection, in the suction channel there is a check valve separating the intake chamber and the suction channel from the fluid withdrawal zone, the jet pump and the first (upper) pressure gauge are located above the packer, and the second (lower) control and measuring device is located under the packer, the pressure working agent is supplied in the annulus from the high pressure water supply system from the top from the mouth of the pressure water supply to the discharge channel to the jet pump, at the jet pump, the suction channel is separated by a check valve from the fluid withdrawal zone, located along packer jet pump does not suck (closed) when the pressure in the mixing chamber and in the suction duct is higher than in the selection zone and the fluid return valve in the lower position and inhibits fluid bypass of the receiving chamber in the screening zone, in FIG. Figure 4 shows a downhole jet installation containing a jet pump mounted on a tubing that is lowered into a well or in its sidetrack with one layer, an additional tubing string that forms an annulus between the tubing and the additional tubing, six stationary instrumentation connected communication cable with a control and information exchange station located at the mouth, a deep electric pump located in an additional well, the first (upper) additional control and measurement boron is a sensor installed with the ability to measure fluid pressure at the outlet of the jet pump, the second additional control and measuring device is a differential pressure gauge installed with the ability to measure the differential pressure between the suction zone and the selection zone, the third control and measuring device in the form of a manometer with the ability to measure pressure in the fluid sampling zone, the fourth and fifth additional instrumentation are sensors, updated with the ability to measure the pressure of the pressure working agent in the annulus and at the inlet to the discharge channel into the jet pump and the sixth additional control and measuring device is a pressure gauge installed with the ability to measure pressure in the mixing chamber of the jet pump, the return channel is located in the suction channel a valve separating the receiving chamber and the suction channel from the selection zone, the working pressure agent is supplied from the top from the wellhead from an additional well from the deep by the pump along the annulus to the discharge channel into the jet pump, in FIG. 5 shows a downhole jet installation containing a jet pump mounted on a tubing that is lowered into a well with one formation, an additional string of tubing, which forms an annulus with a tubing string, six stationary-placed instrumentation connected by a communication cable to the control station and exchange of information located at the mouth, wellhead pressure booster electric centrifugal pump, pit and pressure water conduit, the first (upper) additional control and measuring device is located at the ode from a jet pump, the second additional control and measuring device in the form of a differential pressure gauge is installed with the ability to measure the differential pressure between the suction zone and the selection zone, the third control and measuring device is installed with the ability to measure pressure in the suction zone, the fourth and fifth additional control and measuring devices installed with the ability to measure pressures in the annulus and in the area of the injection channel of the jet pump, the sixth (lower) instrument it is possible to measure the pressure in the fluid extraction zone, while a check valve is used as a separator of the suction and extraction zones, separating the receiving chamber and the suction channel from the fluid sampling zone, which prevents the fluid from passing from the receiving chamber to the sampling zone when the flow of pressure agent into the nozzle is stopped , the supply of the pressure working agent is carried out from the top from the pit mouth by the pressure booster electric centrifugal pump with the intake of the pressure working agent from the high pressure water system or maintaining test pressure along the annulus into the injection channel of the jet pump, while at the jet pump the check valve separates the suction channel from the fluid withdrawal zone.

The downhole jet installation used for operating the well 1 comprises a tubing string 2, on which the jet pump 3 is located, two control and measuring devices, a pressure head device with the possibility of supplying a pressure working agent to the jet pump 3, for example, along the tubing string 2, with an annulus 4.

Instrumentations are installed in predetermined places with the possibility of simultaneously measuring pressure parameters in the selection zone and in the suction zone of the jet pump 3.

The control device is made, for example, in a stationary version, in a removable version, and is connected via a communication cable 6 to a control and information exchange system 7 with the possibility of remotely transmitting pressure data to a control and information exchange system 7 located at the wellhead 1 .

Instrumentation is a pressure sensor.

The jet pump 3 comprises a housing, an insert, a mixing chamber 8, a receiving chamber 9 and a check valve separating the jet pump 3 from the selection zone 5 and opening in one direction, “working” only for suction of the fluid.

The jet pump 3 is further provided with a suction channel 10 located in the receiving chamber 9 of the jet pump 3.

The pressure device is a device configured to supply a pressure working agent to the jet pump 3 and is, for example, an electric pump.

For example, feeding the pressure medium to the jet pump 3 by means of a wellhead electric pump 11 from the wellhead,

supply to the jet pump 3 pressure working agent by means of a deep electric pump 12 from an additional well 13,

feed into the jet pump 3 pressure working agent by means of a wellhead electric pump 11 from the pit 14,

feeding the pressure medium to the jet pump 3 by means of a pressure line conduit system 15, for example, a high pressure water line system, a formation pressure water line system.

Wellhead 11 and deep 12 electric pumps are, for example, UEVN, ESP.

The downhole jet installation is further provided with a packer 16 mounted to separate the layers of the well 1, for example, above the jet pump 3, below the jet pump 3,

additional tubing 17 elevator, which supplies the pressure working agent to the jet pump 3 along the annulus 4 (tubing 2 and tubing 17),

a borehole chamber with a sounding device installed above the jet pump 3 to accommodate the instrument

a borehole chamber with a control device mounted above the jet pump 3 to accommodate a control instrument, for example, diff. manometer, and two manometers,

additional jet pump located under the packer 16 and above the deep electric centrifugal pump 12,

an additional control instrument installed with the ability to measure the differential pressure between the selection zone 5 and the suction zone of the jet pump 3,

additional instrumentation,

installed with the ability to measure downhole parameters.

For example, a borehole chamber with sounding and regulating devices is installed above the deep electric pump 12;

beneath the packer 16, an additional jet pump (not shown in FIG.) is installed above the deep electric centrifugal pump 12, which allows ejection to take fluid into the receiving chamber 9, gas, for example, from the overpacker zone, underpacker zone, overpacker and underpacker zones.

An additional jet pump is connected to the control and information exchange system 7 and can be used for the technology of the wholesale electricity market (OED) for simultaneous and separate operation of several development facilities.

For example, an additional control and measuring device is installed with the ability to measure the differential pressure between the selection zone 5 and the suction zone of the jet pump 3.

Additional instrumentation is installed in predetermined places with the possibility of measuring downhole pressure parameters, for example, in the suction zone of the jet pump 3, measuring the pressure difference between the selection zone 5 and the suction zone of the jet pump 3, at the inlet from the jet pump 3, at the outlet of the jet pump 3, in the jet pump 3, on the housing of the jet pump 3, inside the tubing 2, outside the tubing 2, inside the packer 16, outside the packer 16, inside the borehole chamber, above the jet pump 3, below the jet pump 3, on a removable liner 18 pump 3, on the fixed insert 18 of the jet pump 3, on the pump 12, in the borehole chamber and in other landing devices with the ability to protect instrumentation from damage when lowering them into the well.

An additional instrument is, for example,

complex instrument with various sensors for measuring various well parameters,

pressure sensor (pressure gauge with sensor for changing absolute pressure),

An additional control instrument for measuring the pressure difference between the selection zone 5 and the suction zone of the jet pump 3 is a differential pressure gauge (membrane differential pressure gauge).

The fluid sampling zone 5 is a zone outside the reciprocating movement of the check valve, which separates the receiving chamber 9 of the jet pump 3 from the fluid sampling zone 5.

The control and information exchange system 7 is configured to remotely transmit information of downhole pressure parameters, for example, via a communication cable 6, remotely by means of a modem for remotely transmitting information, and comprises, for example, a control station, a modem for remotely transmitting information, including an information storage device, battery.

The jet pump 3, wellhead 11 and deep 12 electric pumps are connected to the control and information exchange system 7 via cable 6.

The non-return valve 19 is installed, for example, in the housing of the jet pump 3, inside the liner 18 of the jet pump 3, in the suction channel 10, while the non-return valve 19 only opens to absorb fluid, the greater the differential pressure (depression) between the suction zone of the jet pump 3 and the fluid selection zone 5, the more efficient the fluid absorption.

Downhole jet installation operates as follows.

A pipe string 2 is lowered into a well 1 with one or several layers, on which a jet pump 3 is located, two control and measuring devices 20 and 21, a pressure device with the possibility of supplying a pressure working agent to the jet pump 3, for example, along a pipe string 2, annulus 4.

Two control and measuring devices are located in well 1 in the form of a pressure sensor with the possibility of simultaneously measuring pressure in the selection zone 5 and in the suction zone of the jet pump 3 using two pressure gauges.

Two control and measuring devices 20 and 21 measure the pressure parameters at a given location simultaneously, remotely and in real time, while one control and measuring device 21 measures the pressure in the fluid extraction zone 5, and the second 20 in the suction zone of the jet pump 3 s the subsequent determination of the pressure difference between the selection zone 5 of the fluid and the suction zone of the jet pump 3 according to the results of both measurements.

Additionally lower and place in the well 1, for example, an additional control instrument, which is a differential pressure gauge 22 and installed with the ability to measure the pressure drop between the selection zone 5 and the suction zone of the jet pump 3;

additional instrumentation installed with the possibility of measuring downhole parameters, namely, simultaneously measure the pressure drop between the extraction zones 5 and the suction of the jet pump 3, the pressure at the inlet from the jet pump 3, the pressure at the outlet of the jet pump 3, the pressure in the jet pump 3, pressure on the housing of the jet pump 3, pressure inside the tubing 2, pressure outside the tubing 2, pressure inside the packer 16, pressure outside the packer 16, pressure inside the borehole chamber, pressure above the jet pump 3, lower pressure the jet pump 3, the pressure on the insert the jet pump 3, the pressure at the pump 12.

Depending on the technological conditions and the task set, for the installation, for example, two pressure gauges, several pressure gauges and a differential pressure gauge, several differential pressure gauges, several pressure gauges and several differential pressure gauges are used.

The pressure data from the control and measuring devices 20 and 21, as well as from additional control and measuring devices are transmitted via a communication cable 6 to the control and information exchange system 7 located at the wellhead 1.

When the pressure decreases in the suction zone of the jet pump 3, for example, in the mixing chamber 8, in the receiving chamber 9, in the suction channel 10, below the pressure in the selection zone 5, the fluid extraction process is carried out.

A pressure working agent is supplied to the jet pump 3 by, for example, a wellhead electric pump 11 from the wellhead, a deep electric pump 12, a deep electric pump 12 from an additional well 13, a wellhead electric pump 11 from a pit 14, and a pressure pipe system 15.

Regulating the operation of a pressure device, for example, a wellhead electric pump 11, a deep electric pump 12, according to the pressure measurement data, the fluid is extracted in a predetermined mode.

They increase the reliability and efficiency of the jet pump 3, as well as optimize the operation of the jet pump 3 by changing the operating mode of the jet pump 3, increasing the pressure of the supply of the working agent and changing the pressure of the working agent through an additional pressure device.

Using the pressure differential data obtained in real time, the causes of the change in the operation of the jet pump 3 are determined, for example, changes in the operation of the jet pump 3 occurred due to the erosion of the nozzle, changes in the operation of the jet pump 3 occurred due to a decrease in pressure in the fluid extraction zone 5 ( reservoir pressure).

Based on the results of direct measurements, geological and technical measures are quickly taken to optimize the operation of the jet pump 3 and the pressure device modes.

The specified mode of operation of the well 1 is achieved by, for example, frequency automatic or manual regulation of the pressure device, remote control of the jet pump 3 through the use of cable technology to change the liner of the jet pump 3.

Example 1

At the wellhead 1 with one layer, a control and information exchange system 7 is arranged.

On the pipe, for example, in the form of tubing 2, a downhole jet installation consisting of a jet pump 3 with a removable liner and a pressure head device 12 with the possibility of supplying a pressure working agent to the jet pump 3 via a tubing string 2 is lowered into the production casing 1 with perforation.

The pressure device is an ESP 12, connected by a communication cable 6 to a control and information exchange system 7.

In the downhole jet installation, two control and measuring devices 20, 21 are permanently placed, connected by a communication cable 6 to the control and information exchange system 7, while the first (upper) control and measuring device 20 in the form of a manometer is installed with the possibility of measuring pressure in the suction zone 9 of the jet pump 3, and the second (lower) control and measuring device 21 in the form of a sensor is installed with the possibility of measuring pressure in the selection zone 5 of the fluid.

A check valve is located in the suction channel 10; 19 dividing the receiving chamber 9 from the selection zone 5.

Turn on the ESP 12. After turning the ESP 12 into the jet pump 3 into a removable liner, including the nozzle and diffuser, a pressure working agent is supplied from the bottom of the ESP 12 to the tubing string 2.

The pressure working agent passing through the nozzle and diffuser of the jet pump 3 sharply accelerates and significantly reduces the pressure in the mixing chamber 8 and, accordingly, in the receiving chamber 9, which is transmitted to the suction channel 10 with a check valve.

Two control and measuring devices 20, 21 are installed with the possibility of simultaneous measurement of pressure parameters in the selection zone 5 and in the suction zone of the jet pump 3 to determine the pressure difference between these zones:

the first (upper) pressure gauge 20 measures the pressure in the receiving chamber 9 - in the suction zone of the jet pump 3.

The second (lower) sensor 21 measures the pressure in the selection zone 5.

The pressure gauge 20 and the measurement sensor 21 are carried out simultaneously, in real time, with the transmission of pressure data via a communication channel 6 to the control and information exchange system 7 for the subsequent determination of the pressure difference between the suction zone 8 of the jet pump 3 and the selection zone 5 of the fluid and the greater this difference pressure, the higher the differential pressure (depression) and the more efficiently the jet pump 3.

The jet pump 3 does not work (does not suck), for example,

in the absence of pressure drop,

when the pressure in the suction zone of the jet pump 3 is higher than in the selection zone 5, while the check valve cuts off the overflow from the zone with high pressure to the zone with less.

The stronger the pressure decreases in the suction zone of the jet pump 3, for example, in the receiving chamber 9, relative to the pressure in the selection zone 5, the more efficiently the elements and geometry of the nozzle, the parameters of the mixing chamber 8 and the diffuser of the jet pump 3 are selected.

When the pressure in the receiving chamber 9, which is transmitted to the suction channel 10 with the check valve, decreases below the pressure of the sampling zone 5, the check valve moves, opening the passage from the sampling zone 5 of the fluid to the receiving chamber 9 and then to the mixing chamber 8, i.e. the absorption of fluid from the selection zone 5 into the jet pump 3: the receiving chamber 9 and into the mixing chamber 8, by extracting fluid from the wellbore 1.

The information obtained on the pressures and on the pressure difference (differential), including the change in pressure difference, from two instrumentation 20 and 21 gives objective information on the operation of the jet pump 3, on the suction process, on the change in pressure difference, which allows determine, including the operation of the non-return valve, if the pressure difference is constant, then this usually indicates that the non-return valve is jammed, or that the pressure in the mixing chamber 8 is higher than the pressure in the fluid selection zone 5. Since the suction process through the non-return valve is a pulsed process with a constant change in pressure drop and is associated with constant movements of the non-return valve, the pressure drop can also be used to monitor the tightness of the non-return valve when the flow of pressure agent into the nozzle of the jet pump 3 is stopped.

Also, the obtained pressure information allows you to more accurately select the size of the nozzle and diffuser in the jet pump 3 and to obtain a greater pressure drop between the mixing chamber 8 and the selection zone 5, and, accordingly, thereby achieve higher efficiency and greater productivity of the jet pump 3.

Based on the results of direct measurements, geological and technical measures are taken to optimize the operation of the jet pump 3.

Example 2

At the wellhead 1 with two layers, a control and information exchange system 7 is located (Fig. 2).

At the tubing 2, a well jet unit containing a jet pump 3, a packer 16 and a pressure device with the possibility of supplying a pressure working agent to the jet pump 3 via a tubing string 2 is lowered into a production casing with perforation.

The pressure device is a deep electric pump (ESP) 12.

The jet pump 3 and ESP 12 are connected to the control and information exchange system 7 via a communication cable 6.

Four control and measuring devices are permanently placed in the installation and are connected by a communication cable 6 to the control and information exchange system 7, while the first (upper) additional control and measuring device is a sensor 23 located with the possibility of measuring pressure parameters at the outlet of the jet pump 3, the second instrument is a pressure gauge 20 and is located with the possibility of measuring pressure in the suction zone of the jet pump 3, the third instrument is presented spin precession is a sensor 21 arranged to measure the pressure in the zone selection parameters 5, and the fourth (bottom) third inspection tool is a sensor 24 arranged to measure the parameters of pressure at the inlet of the jet pump 3.

The jet pump 3, instrumentation 21, 20 and additional 23, 24 are located above the packer 16 and above the ESP 12, while the packer 16 is located above the ESP 12 between the two layers.

In the suction channel 10 is a check valve separating the receiving chamber 9 and the suction channel 10 from the selection zone 5.

Turn on the ESP 12. After turning on the ESP 12, a pressure working agent is supplied from the ESP 12 through the tubing string 2 to receive the jet pump 3 into a removable liner including a nozzle and a diffuser.

The pressure working agent passing through the nozzle and diffuser of the jet pump 3 sharply accelerates and significantly reduces the pressure in the mixing chamber 8 and, accordingly, in the receiving chamber 9, which is transmitted to the suction channel 10 with a check valve.

Additional sensors 23 and 24 measure the pressure, respectively, of the fluid at the outlet and inlet of the jet pump 3 to obtain information about the pressure loss at the jet pump 3.

A pressure gauge 20 measures the pressure in the suction zone of the jet pump 3.

The sensor 21 measures the pressure in the selection zone 5.

The pressure measurement by instrumentation 21, 20 and additional 23, 24 is carried out remotely, simultaneously and in real time, and transmit them via communication channel 6 to the control and information exchange system 7.

The check valve is moved, opening the passage from the fluid sampling zone 5 to the receiving chamber 9 and then to the mixing chamber 8 when the pressure in the receiving chamber 9 is reduced, which is transmitted to the suction channel 10 with a check valve, below the pressure of the sampling zone 5, i.e. fluid from the selection zone 5 to the receiving chamber 9 and to the mixing chamber 8, thus extracting fluid from the lower reservoir by the electric pump ESP 12 and simultaneously from the upper reservoir by the jet pump 3 of the well 1, providing simultaneously effective operation of the two objects - the well layers 1.

Example 3

At the wellhead 1 with one layer, a control and information exchange station 7, a high pressure water conduit system 15, a pit 14 with a wellhead pressure device 11 with the possibility of supplying a pressure working agent to the jet pump 3 through the annulus 4 into the discharge channel 26 of the jet pump 3 are located (Fig. . 5).

The pressure device with the ability to supply a pressure working agent to the jet pump 3 along the annulus 4 is a wellhead pressure booster electric centrifugal pump - ESP 11.

A downhole jet installation containing tubing 2 is lowered into a well 1 with one formation, on which a jet pump 3 is located, six stationary measuring and measuring instruments connected by a communication cable 6 to a control and information exchange station 7,

the first (upper) additional control measuring device 23 is a sensor located with the ability to measure the pressure parameters at the outlet of the jet pump 3, the second additional control and measuring device 22 in the form of a differential pressure gauge is located with the ability to measure the pressure difference between the mixing chamber 8 and a selection zone 5, the third control device 20 is a sensor located with the ability to measure pressure parameters in the receiving chamber 9, the fourth and fifth additional instrumentation 25, which is a sensor, are located with the possibility of measuring pressure parameters in the annulus 4 and in the area of the discharge channel 26 of the jet pump, the sixth (lower) instrument 21 is a sensor located with the possibility of measurement pressure parameters in the fluid selection zone 5.

In the suction channel 10, a check valve 19 is installed that separates the intake chamber 9 and the suction channel 10 from the selection zone 5. The check valve 19 is used as a separator of the suction and selection zones, preventing the fluid from passing from the reception chamber 9 to the selection zone 5 when the pressure agent is stopped into the nozzle of the jet pump 3.

The jet pump 3 and the wellhead ESP 11 are connected by a communication cable 6 to a control and information exchange station 7.

Between the tubing 2 and the additional tubing 17, a double elevator (annulus 4) is formed for supplying the working pressure agent from above from the mouth with a high pressure water conduit 15 from the pit 14 and the wellhead ESP 11 into the injection channel 26 into the jet pump 3.

The wellhead ESP 11 is turned on. 11. After the wellhead ESP 11 is turned on, the jet pump 3 is received in a removable liner 18, including the nozzle and diffuser, and the pressurized working agent is fed by the wellhead ESP 11 from the pit 14 and the high pressure water system 15 via a double elevator with an annulus 4 into the discharge channel 26 jet pump 3.

The pressure working agent passing through the nozzle and diffuser of the jet pump 3 sharply accelerates significantly reducing the pressure in the mixing chamber 8 and, accordingly, in the receiving chamber 9, which is transmitted to the suction channel 10 with a check valve 19.

Instrumentation 20, 21 and additional: 22, 23 and 25 carry out simultaneous pressure measurement in real time:

the first (upper) sensor 23 measures the pressure at the fluid outlet from the jet pump 3, determining the pressure loss at the jet pump 3,

the second differential pressure gauge 22 measures the pressure drop between the mixing chamber 8 and the selection zone 5,

the third sensor 20 measures the pressure in the receiving chamber 9,

the fourth and fifth sensors 25 measure the pressure of the pressure agent in the annulus 4 and in the area of the discharge channel 26 of the jet pump 3, according to which the pressure loss on the jet pump 3 is determined

and a sixth sensor 21 measures the pressure in the fluid sampling zone 5.

Pressure measurements by sensors 20, 21, 22, 23 and 25 are carried out simultaneously in real time with their transmission via a communication cable 6 to the control and information exchange system 7 for subsequent determination and monitoring of the difference in pressure parameters between the suction zone of the jet pump 3 and the selection zone 5 fluid.

Also, the data from the instrumentation 23 and 25 are used to clarify the pressure parameters during operation of the jet pump 3.

When the pressure in the suction zone of the jet pump 3, which is transmitted to the suction channel 10 with a non-return valve, decreases below the pressure in the selection zone 5, the non-return valve moves, opening the passage from the fluid sampling zone 5 to the receiving chamber 9 and then to the mixing chamber 8, that is, the fluid is sucked from the selection zone 5 into the receiving chamber 9 and into the mixing chamber 8, extracting the fluid from the well 1.

Rapid and accurate adjustment of the jet pump and adjusting the characteristics of the system for injecting the working pressure agent into the jet pump by obtaining real-time parameters of the pressure of the jet pump: pressure data in the suction and extraction zones significantly increases the efficiency and reliability of the jet pump and ensures that the well is brought to the required a predetermined mode of operation, while the use of instrumentation in the online mode allows you to quickly respond to changes in time pressure parameters of the operating facility, refine them in real time and adjust the operation of the jet pump, for example, by replacing the nozzle and / or diffuser with other diameters.

It also allows you to abandon conditional calculations of the parameters of the jet pump, since direct pressure measurements more accurately integrally take into account the parameters of the medium, density and gas factor of the fluid.

The proposed technical solution allows efficiently and reliably, with constantly changing parameters of the production facility, to operate the jet pump in real time, to conduct remote research and efficient control of hydrocarbon production, to constantly or occasionally optimize the technological mode.

The proposed technical solution improves production - fluid extraction and the efficiency of the jet pump and, accordingly, improves the well’s efficiency by real-time determination and monitoring of well parameters, namely, pressure and pressure difference, in a given place; optimizes well operation, increasing the efficiency of development of production facilities with low reservoir pressure and high gas factor; determines in real time the causes of changes in the operation of the jet pump, for example, due to the erosion of the nozzle, by reducing the pressure in the extraction zone (reservoir pressure) and increases the reliability and efficiency of the jet pump with the possibility of its frequency regulation, increasing the pressure of the working agent, changing the pressure head pressure of the working agent in the RPM system, thereby allowing to optimize the operation of the jet pump.

Measurements of pressure in a given place, determining the pressure difference (difference), by means of control and measuring instruments allows you to efficiently operate a jet pump and, accordingly, to increase the production of fluid and increase the energy efficiency of a well with low reservoir pressure and high gas factor, which the turn increases the efficiency of development, including several operational facilities with low reservoir pressure and high gas factor.

Claims (5)

1. A downhole jet installation including a pipe string on which the jet pump is located and a control and measuring device connected via a communication cable to a control and information exchange system with the possibility of transmitting pressure data to a control and information exchange system located at the wellhead, the fact that it further comprises a pressure device configured to supply a pressure working agent to the jet pump, two measuring instruments, which are installed with the possibility NOSTA simultaneously measuring the pressure in the zone selection parameter and in the zone of suction jet pump. 2. The downhole jet installation according to claim 1, characterized in that the pressure device is configured to supply a pressure working agent to the jet pump through a pipe string. 3. The downhole jet installation according to claim 1, characterized in that the pressure device is configured to supply a pressure working agent to the jet pump through the annulus. 4. The downhole jet installation according to claim 1, characterized in that the control and measuring device is a pressure sensor. 5. The downhole jet installation according to claim 1, characterized in that the control and measuring device is a differential pressure gauge installed with the ability to measure the differential pressure between the selection zone and the suction zone of the jet pump.

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