WO2007149008A1

WO2007149008A1 - Method for operating a well jet device at a hydraulic fracturing of multilayer hydrocarbon reservoirs

Info

Publication number: WO2007149008A1
Application number: PCT/RU2007/000101
Authority: WO
Inventors: Zinoviy Dmitrievich Khomynets
Original assignee: Zinoviy Dmitrievich Khomynets
Priority date: 2006-06-16
Filing date: 2007-03-02
Publication date: 2007-12-27
Also published as: RU2310103C1

Abstract

The invention relates to methods for operating a well jet device at a hydraulic fracturing of a multilayer hydrocarbon accumulations. The inventive method consists in running a packer and a jet pump on a pipe string into a well passing through several productive formations, in placing the packer between the lower and first intermediate beds, in pumping a fracturing fluid into the lower bed, in draining said bed for removing a fracturing fluid and proppant, which is non-fixed in the bed, in recording a pressure in the well under the packer with the aid on an autonomous manometer, in bringing the packer into transit position, in slightly lifting the pipe string together with the packer and the jet pump, in releasing the packer between the following intermediate beds, in mounting a proppant plug from the bottom hole to the bed of an intermediate bed, in repeating said operation according to the number of productive formations, in running a flexible pipe through the pipe string and the jet pump, in washing the well with the aid of said pipe for removing the proppant, after the proppant removal, in forming a depression on the production formations and in recording a fluid movement profile from the bottom hole to an input cone with the aid of a geodesic instrument.

Description

METHOD FOR WORKING A WELL JET INSTALLATION WHEN HYDRAULIC BREAKING OF MULTI-PLASTED DEPOSITS

HYDROCARBON

Application area

The invention relates to the field of pumping technology, mainly, to methods for operating a downhole jet unit during hydraulic fracturing of multilayer hydrocarbon deposits. BACKGROUND OF THE INVENTION There is a known method of operating a jet well installation, including supplying a liquid working medium through a tubing string to a nozzle of a jet apparatus, extracting a medium pumped out of a well by a working medium, mixing a liquid working medium with a medium pumped out of the well, and supplying a mixture of mediums from the well to surface (RU 2059891 Cl).

The known method of operation of a downhole jet installation allows pumping out various produced media, for example, oil, from a well while processing the produced medium and the borehole zone of the formation, however, in the known method, the liquid working medium is supplied to the nozzle of the jet apparatus through a pipe string, which in some cases narrows the area use of the installation that implements the known method.

The closest to the invention in technical essence and the achieved result is a method of operating a downhole jet installation, including installing tubing strings with a jet pump and a packer in the well, unpacking the packer, lowering the well into the well through the passage channel on the cable of the emitter and receiver-converter of physical fields together with the sealing unit, installing the latter on a seat in the passage channel, the placement of the emitter and receiver-converter of physical fields above the roof of the reservoir and the flow of liquid working medium into the active nozzle of the jet pump with the creation of depression on the reservoir and registration of fluid parameters coming from the reservoir, (RU 2106540 Cl) .

This method of operation of a downhole jet installation allows for various technological operations in the well below the installation level of the jet pump, including by creating a pressure differential above and below the sealing unit. However, this method of operation does not allow to fully utilize the capabilities of the downhole jet installation that implements it, due to the lack of operations to increase the flow rate from several productive formations, which narrows the capabilities of this installation.

Disclosure of invention

The problem to which the present invention is directed, is to increase the flow rate of wells with multiple reservoirs by treating multiple reservoirs with a single downhole jet unit. The technical result, the achievement of which the present invention is directed, is to increase the productivity of a downhole jet installation.

This problem is solved, and the technical result is achieved due to the fact that the method of operation of a downhole jet installation is that a packer and an jet pump are lowered into a well with several, for example, three productive strata in a pipe string, the channel for discharging a mixture of media and a channel the supply of the pumped-over medium of the jet pump is blocked located in its upper position, with a support sleeve spring-loaded relative to its body, the packer is installed between the lower and intermediate layers, the packer is unpacked, and then the fracturing fluid is pumped through the pipe string into the lower productive layer of the well, lowered along the pipe string into the well and installed on the seat in the support sleeve in the jet pump housing, a depression insert with a non-return valve and an autonomous pressure gauge suspended under it, after which by supplying a working medium along the annulus The main space of the well into the channel for supplying the working medium is moved the support sleeve to the lower position, thereby communicating the channel for withdrawing the mixture of media with the pipe string above the depression insert and the channel for supplying the pumped medium with the pipe string below the depression insert, the working medium is supplied to the nozzle of the jet pump and the drainage the lower reservoir with the removal of hydraulic fracturing fluid and proppant loose in the lower reservoir, while recording pressure in the well under the packer using autonomously about the pressure gauge, stop the flow of the working medium, thereby moving the support sleeve to the upper position, remove the depression insert from the jet pump housing together with the stand-alone pressure gauge, bring the packer to the transport position, lift the pipe string with the packer and the jet pump and unpack the packer between the upper and intermediate layers, set the proppant plug in the interval from the bottom to the bottom of the intermediate layer, and then the fracturing fluid is pumped through the pipe string into the intermediate product ny wellbore formation is lowered through the pipe string into the well and is mounted on the seat in the support a sleeve in the body of the jet pump a depression insert with a non-return valve and an autonomous pressure gauge suspended beneath it, after which, by supplying a working medium along the annulus of the well, the support sleeve is moved to the lower position, thereby communicating the channel for discharging the mixture of media with the pipe string above the depression insert and the channel supplying a pumped medium with a pipe string below the depressant insert, the working medium is supplied to the nozzle of the jet pump and the intermediate productive formation is drained to remove liquid from it fracturing bones and proppant not fixed in the intermediate reservoir, while recording pressure in the well under the packer using an autonomous pressure gauge, stop the flow of the working medium, thereby moving the support sleeve to the upper position, and remove the depression insert from the jet pump housing together with the autonomous pressure gauge, bring the packer into transport position and raise the pipe string with the packer and the jet pump, unpack the packer above the upper reservoir, increase the proppant plug to the bottom of the upper layer, and then pump the hydraulic fracturing fluid into the upper productive layer of the well, pump down the pipe string into the well and install a depression insert with a check valve and an independent pressure gauge suspended under it in the support sleeve in the jet pump housing then, by supplying the working medium along the annular space of the well, the support sleeve is moved to the lower position, thereby communicating the channel for withdrawing the mixture of media with the pipe string above the depression in rates and channel for supplying a pumped-over medium with a pipe string below the depression insert, produce the supply of the working medium to the nozzle of the jet pump and drainage of the upper reservoir with the removal of hydraulic fracturing fluid and the proppant loose in the upper reservoir, recording the pressure in the well under the packer using an autonomous pressure gauge, stop the flow of the medium, thereby moving the support sleeve into the upper position, the depression insert is removed from the jet pump housing together with an autonomous pressure gauge, a flexible pipe is passed through the pipe string and the jet pump through the metering unit with the possibility of its movement relative to it, and the lower end of the flexible pipe is installed at least 0.1 m below the surface of the proppant tube, and during the descent, the sealing unit is installed on the seat of the support sleeve, the working medium is supplied through the annulus and the support sleeve is thereby moved to the lower position and the working medium is fed into the jet pump nozzle and the pressure in the under-packer space is reduced to a value lower than the pressure in any of the productive formations, after e stabilization of bottomhole pressure is fed into the well under pressure through a flexible pipe; the medium for flushing the wellbore from proppant; as the flushing of the wellbore, the end of the flexible coarse is gradually lowered down to the bottom, while the proppant mixture with the flushing medium of the wellbore from proppant and reservoir fluid from productive formations through the pipe string it enters the channel for supplying the pumped-over medium of the jet pump and through it enters the mixing chamber, and in the latter it is mixed with the working medium supplied from the nozzle of the jet pump, further obtained w in the jet pump fluid mixture from the jet pump is fed through the pipe string to the surface, and then removing proppant from the bottom of the well, a flexible pipe with a sealing assembly is removed from the well, a depression insert with a non-return valve and an autonomous pressure gauge suspended under it is installed on the seat of the support sleeve, the working medium is fed into the jet pump nozzle, and thus the support sleeve is moved to the lower position and created depression on the productive formations, after which the flow of the working medium into the nozzle is stopped and, using the depression insert and an autonomous pressure gauge, the recovery curves of the pl test pressure in the under-packer space of the well, then a depression insert is removed from the jet pump housing together with an autonomous pressure gauge and a sealing unit is installed on the seat in the support sleeve, through which a logging cable is passed with the possibility of axial movement, at the lower end of which a geophysical instrument is installed, at a cost The working medium is fed into the space and thereby the support sleeve is moved to the lower position, the working medium is fed into the jet pump nozzle, while lowering the bottom st pressure further when the jet pump is carried out using geophysical instrument registration inflow profiles produced formation fluid downhole at various pressures in a wellbore packer space in the range from its bottom to the front of the funnel and liner in the reverse direction.

Analysis of the operation of a well jet installation showed that the efficiency of the installation can be improved by optimizing the sequence of actions when conducting work on the research, repair and operation of wells with several productive formations. It was found that the above sequence of operations allows the most efficient use of a downhole jet unit when carrying out work to intensify the production of various media from wells with several productive formations by sequentially treating productive formations, starting from the bottom, by creating a depression in each productive stratum, which allows to increase the permeability in all productive formations for the medium pumped out from the productive formations. Registration of the reservoir pressure recovery curve in combination with other methods of well research, for example, by recording the flow profiles of the medium extracted from productive formations, allows to determine their productivity and technical condition of the well. With the created depression, a jet pump removes fracturing fluid from productive formations, in addition to unsecured proppant, which reduce the productivity of formations that are carried to the surface at high speed along the inner cavity of the pipe string. At the same time, it is possible to control the magnitude of depression, receiving information from an autonomous pressure gauge installed under the depression insert. The most important thing is that the work described above on processing several productive layers of a well can be carried out without removing the pipe string with a jet pump to the surface, which significantly reduces the downtime of the well. In addition, when registering the inflow profiles during the test of productive formations, it is possible to create a depression on the productive formations and adjust the pumping mode by changing the pressure of the liquid working medium supplied to the nozzle of the jet pump. Overlapping the support sleeve of the channels, connecting the jet pump with the in-pipe space allows isolating the in-pipe space of the pipe string from the annular space, which allows fracturing fluid to be pumped into the productive formations at any pressure. Thus, this method of work allows you to effectively carry out activities to intensify the flow rate of the well in the process of its repair and operation, while conducting a comprehensive study of the well. It should be noted that the sequence of actions described in the invention allows you to constantly monitor the progress of work to intensify the influx of the environment extracted from productive formations. In particular, the curves of reservoir pressure recovery, obtained at various stages of the implementation of the described method of operation, provide an objective picture of the state of the productive formations depending on the work carried out to increase the permeability of the productive formations of the well. In addition, it was found that it is necessary to position the lower end of the flexible pipe at least 0.1 m below the surface of the proppant plug. Only in this case, it is possible to effectively loosen the proppant plug, which, in turn, allows it to be pumped to the surface with the help of a jet pump.

Thus, the accomplishment of the task has been achieved - increasing productivity during research and repair of wells with several productive formations.

Brief Description of the Drawings Fig. 1 is a longitudinal sectional view of a downhole jet unit during injection of a fracturing fluid pipe into a lower formation. Figure 2 presents a longitudinal section of a jet pump installation with a depression insert installed in the support sleeve with a check valve and an autonomous pressure gauge.

On Fig.3 shows a longitudinal section of a downhole jet unit when pumping hydraulic fracturing fluid through a string of pipes into an intermediate formation.

Figure 4 presents a longitudinal section of a downhole jet unit with a sealing assembly installed in the support sleeve and a flexible pipe passed through it. Figure 5 presents a longitudinal section of a downhole jet unit during registration of flow profiles using a geophysical instrument.

BEST MODE FOR CARRYING OUT THE INVENTION A downhole jet installation for implementing the proposed method of operation comprises a packer 2 mounted on a pipe string 1 from bottom to top with a central channel 3 made therein and a jet pump 4, in the housing 5 of which a nozzle 6 and a mixing chamber 7 with a diffuser 8 are installed, and also made a channel 9 for supplying a working medium to the nozzle 6, a channel 10 for withdrawing a mixture of media and a channel 11 for supplying a medium pumped out of the well. The nozzle 6 of the jet pump 4 through the channel 9 for supplying the working medium is connected to the annular space 12 of the pipe string 1, and the channel 11 for supplying the medium pumped out of the well from the inlet side and the outlet of the diffuser 8 through the mixing chamber 7 and the channel 10 for discharging the mixture of media are connected to the inner cavity 13 of the pipe string 1. In the housing 5 of the jet pump 4 coaxially to the pipe string 1 is installed spring-loaded by means of a spring 14 relative to the housing 5, axially movable support sleeve 15 with the housing 5 located in the bore thrust flange 16. In the housing 5 above the thrust flange 16 of the support sleeve 15. made channel 17, in communication with the channel 9 for supplying a liquid working medium through the nozzle 6 and the channel 11 for supplying a pumped medium. In the supporting sleeve 15, bypass holes 18 and a seat 19 are made for mounting a sealing assembly 20, which is deflated through a pipe string 1, with an axial hole 21 for passing through the last flexible pipe 22 or for mounting a depression insert 23 with a check valve 24 on the seat 19 and suspended under it by an autonomous pressure gauge 25 for measuring pressure in the well under packer 2 when pumping medium out of the well. In the initial upper position of the support sleeve 15, the output of the channel 10 for discharging the mixture of media and the channel 11 for supplying the pumped-over medium are blocked by the support sleeve 15. In the lower position of the support sleeve 15, its upper end is located below the output of the channel 10 for removing the mixture of media, and the bypass holes 18 of the support sleeve 15 are communicated with the entrance to the channel 11 for supplying the medium pumped out of the well. A downhole jet installation is located in a well with several, for example, three layers: a lower 26, an intermediate 27 and an upper 28. To isolate the treated productive formation, in particular, the lower layer 26 and the intermediate layer 27, a proppant plug 29 is created in the well. In addition, a pipe string 1 below the packer 2 is mounted a shank with a funnel 30, and a sealing unit 31 can be installed on the seat 19 in the support sleeve 15 with a wireline 32 passed through it with the possibility of axial movement, at the lower end to Geophysical instrument 33 is fixed.

The proposed method of operation of a downhole jet installation is as follows. On the pipe string 1, they are lowered into a well with several, for example, three productive layers 26, 27, 28, a liner with a funnel 30, a packer 2 and a jet pump 4. Moreover, the channel 10 for discharging the mixture of media and the channel 11 for supplying the pumped medium of the jet pump 4 are blocked by in its upper position, a support sleeve 15, spring-loaded relative to its body 5. Packer 2 is installed between the lower 26 and intermediate 27 productive formations, the packer 2 is unpacked, and then hydraulic fracturing fluid is pumped through the pipe string 1 into the lower productive ast 26 wells. After that, the pipe string 1 is lowered into the well and installed on the seat 19 in the support sleeve 15 in the housing 5 of the jet pump 4, a depression insert 23 with a check valve 24 and an autonomous pressure gauge suspended under it 25. Then, by supplying a working medium through the annular space 12 of the well in the channel 9 for supplying the working medium and, acting on the working medium on the flange 16, move the support sleeve 15 to the lower position, thereby communicating the channel 10 for withdrawing the mixture of media with the pipe string 1 (its internal cavity 13) above the depression insert 23 and the channel 11 supplying the pumped medium through the bypass holes 18 and the check valve 24 of the depressant insert 23 with the pipe string 1 below the depressant insert 23. The working medium is supplied to the nozzle 6 of the jet pump 4 and the lower productive formation 26 is drained to remove hydraulic fracturing fluid and not fixed in the lower the proppant reservoir 26, while recording pressure in the well beneath the packer 2 using an autonomous pressure gauge 25. Stop the flow of the working medium, thereby moving the support sleeve 15 to the upper position. Remove from the housing 5 of the jet pump 4 Depression insert 23 with self-contained pressure gauge.

Packer 2 is brought into transport position. Raise the pipe string 1 with the packer 2 and the jet pump 4 and unpack the packer 2 between the upper 28 and intermediate 27 layers. The proppant plug 29 is installed in the interval from the bottom to the bottom of the intermediate formation 27, and then hydraulic fracturing fluid is injected through the pipe string 1 into the intermediate production formation 27 of the well. They are lowered along the pipe string 1 into the well and installed on the seat 19 in the support sleeve 15 in the housing 5 of the jet pump 4, the depressant insert 23 with a check valve 24 and an autonomous pressure gauge suspended under it 25, after which they are moved through the annular space 12 of the well , as described above, the support sleeve 15 to the lower position, thereby communicating the channel 10 for withdrawing the mixture of media with the pipe string 1 above the depression insert 23 and the channel 11 for supplying the pumped medium with the pipe string 1 below the depression insert 23. Produce supplying the working medium to the nozzle 6 of the jet pump 4 and draining the intermediate reservoir 27 to remove the fracturing fluid and proppant loose from the intermediate reservoir 27 while registering the pressure in the well under the packer 2 using an autonomous pressure gauge 25. Stop the flow of the medium thereby moving the support sleeve 15 to the upper position, and the depression box 23 is removed from the housing 5 of the jet pump 4. The packer 2 is brought into the transport position and the pipe string 1 with the packer 2 is lifted. and a jet pump 4. Unpack the packer 2 over the upper reservoir 28. Increase the proppant plug 29 to the soles of the upper producing formation 28, and then injection is carried out along the column _; 1 fracturing fluid in the upper producing formation 28 of the well. The pipe string 1 is lowered into the well and mounted on the seat 19 in the support sleeve 15 in the housing 5 of the jet pump 4, the depression insert 23 with a check valve 24 and an autonomous pressure gauge 25 suspended under it. After that, the wells are moved through the annulus 12 the support sleeve 15 to the lower position, thereby communicating the channel 10 for discharging the mixture of media with the pipe string 1 above the depression insert 23 and the channel 11 for supplying the pumped medium with the pipe string 1 below the depression insert 23. Supply to the nozzle 6 s the fluid pump 4 of the working medium and drainage of the upper reservoir 28 to remove hydraulic fracturing fluid and proppant loose in the upper reservoir, while recording pressure in the well under the packer 2 using an autonomous pressure gauge 25. Stop the flow of the fluid, thereby moving the support sleeve 15 in the upper position. Remove from the housing 5 of the jet pump 4 a depressant insert 23 with an autonomous pressure gauge 25. Lower the flexible pipe 22 through the pipe string 1 and the jet pump 4, passed through the sealing unit 20 with the possibility of its movement relative to it, and set the lower end of the flexible pipe 22 at least less than 0.1 m below the surface of the proppant plug 29, and during the descent, a sealing assembly 20 is installed on the seat of the support sleeve 15. A working medium is supplied through the annulus 12 and thereby the support sleeve 15 is moved to zhnee position and served in the nozzle 6 of the jet pump 4 is a liquid working medium and thus the pressure in the under-packer space is reduced to a value lower than the pressure in any of the productive formations 26, 27, 28. After stabilization of the bottomhole pressure, the flushing medium is fed into the well under pressure through a flexible pipe 22 wellbore from proppant. As the barrel rinses, the end of the flexible pipe 22 is gradually lowered down to the bottom. In this case, the proppant mixture with the wellbore flushing medium from the proppant and the formation medium from the productive formations 28, 27, 26 through the pipe string 1 enters the channel 11 for supplying the pumped medium of the jet pump 4 and through it enters the mixing chamber 7, and in the latter it is mixed with the working medium supplied from the social network 6 of the jet pump 4. Next, the mixture of media obtained in the jet pump 4 is fed from the jet pump 4 through a pipe string 1 to the surface. After the proppant is removed from the bottom of the well, a flexible pipe 22 with a sealing assembly 20 is removed from the well and a depression insert 23 with a check valve 24 and an autonomous pressure gauge 25 suspended under it is installed on the seat 19 of the support sleeve 15. The working medium is fed into the nozzle 6 of the jet pump 4, in this way, the support sleeve 15 is moved to the lower position, using the jet pump 4, the necessary depression is created on the layers 26, 27, 28. Then the flow of the medium into the nozzle 6 is stopped and with the help of the depression insert 23 and the auton Ohm manometer 25 conduct registration of recovery curves of reservoir pressure in the under-packer space of the well. Next, the depressant insert 23 is removed from the housing 5 of the jet pump 4 along with an autonomous pressure gauge 25 and the sealing unit 31 is installed on the seat 19 in the support sleeve 15, through which, with the possibility of axial movement, a logging cable 32 is missed, at the lower end of which a geophysical instrument 33 is installed. A working medium is supplied along the annular space and thereby the supporting sleeve 15 is moved to the lower position. Serve the working medium in the nozzle 6 of the jet pump 4, while lowering the bottomhole pressure. Then, when the jet pump is operating, the flow profiles of the produced formation medium are recorded using a geophysical device 33 at different bottomhole pressures in the under-packer space of the well in the interval from its bottom to the input funnel of the liner 30 and in the opposite direction.

Industrial applicability

The present invention can be used in the oil and gas industry in the development of oil and gas condensate wells after drilling and during their operation.

Claims

Claim

The method of operation of a downhole jet installation, namely, that a packer and an inkjet pump are lowered into a well with several, for example, three productive strata, and the channel for discharging the mixture of media and the channel for supplying the pumped medium of the jet pump are blocked by a spring loaded relative to its upper position its bodies with a support sleeve, the packer is installed between the lower and intermediate layers, the packer is unpacked, and then the fracturing fluid is pumped through the pipe string into the lower product the active layer of the well, is lowered along the pipe string into the well and a depression insert with a non-return valve and an autonomous pressure gauge suspended under it is installed on the seat in the support sleeve in the jet pump housing, after which they are moved by supplying the working medium through the annulus of the well into the channel for supplying the working medium the support sleeve to the lower position, thereby communicating the channel for discharging the mixture of media with the pipe string above the depression insert and the channel for supplying the pumped medium with the pipe string below the depression insert, supply the working medium to the nozzle of the jet pump and drain the lower reservoir with the removal of hydraulic fracturing fluid and proppant loose in the bottom reservoir, registering the pressure in the well under the packer using an autonomous pressure gauge, stop the flow of the medium, thereby moving the support sleeve in the upper position, remove the depressant insert from the jet pump housing together with an autonomous pressure gauge, the packer is brought into transport position, the pipe string with the packer and the jet pump is lifted and the packer is unpacked between the upper and intermediate layers, the proppant plug is installed in the interval from the bottom to the bottom of the intermediate layer, and then the hydraulic fracturing pipe is pumped into the intermediate productive formation of the well, lower along the pipe string into the well and install a depression insert with with a stand-off valve and an autonomous pressure gauge suspended beneath it, after which, by supplying the working medium through the annulus of the well, the support sleeve is moved to the lower position, thereby communicating the channel for discharging the mixture of media with the pipe string above the depression insert and the channel for supplying the pumped medium with the pipe string below the depression insert supply the working medium to the nozzle of the jet pump and drainage of the intermediate reservoir with the removal of hydraulic fracturing fluid and non-fixed in the intermediate product in the proppant reservoir, recording the pressure in the well beneath the packer using an autonomous pressure gauge, stop the flow of the working medium, thereby moving the support sleeve to the upper position, and remove the depression insert from the jet pump housing together with the autonomous pressure gauge, bring the packer to the transport position and lift the pipe string with the packer and the jet pump, unpack the packer above the upper reservoir, increase the proppant plug to the bottom of the upper reservoir, and then pump through a pipe string of hydraulic fracturing fluid in the upper reservoir, lower the pipe string into the borehole and install a depression insert with a check valve and an autonomous pressure gauge suspended under it in the support sleeve in the jet pump housing, after which the support sleeve is moved to the lower position by supplying a working medium through the annulus of the well, thereby informing a channel for discharging a mixture of media with a pipe string above the depression insert and a channel for supplying a pumped medium with a pipe string below the depression insert, supply a working fluid to the nozzle of the jet pump Redids and drainage of the upper reservoir with the removal of hydraulic fracturing fluid and proppant loose in the upper reservoir, while recording pressure in the well under the packer using an autonomous pressure gauge, cut off the flow of the working medium, thereby moving the support sleeve to the upper position, and remove it from the housing the jet pump, the depressant insert together with the stand-alone pressure gauge, is lowered through the pipe string and the jet pump, the flexible pipe passed through the sealing unit with the possibility of its transfer place relative to it, and install the lower end of the flexible pipe at least 0.1 m below the surface of the proppant plug, and during the descent, install a sealing assembly on the seat of the support sleeve, supply a working medium through the annulus and thereby move the support sleeve into lower position and feed the working medium into the nozzle of the jet pump, while lowering the pressure in the under-packer space to a value lower than the pressure in any of the productive formations after stabilization of the bottomhole pressure. is fed into the well under pressure through a flexible tube for flushing medium from the wellbore proppant as barrel washing gradually lower the end of the flexible coarse down to the bottom, while the proppant mixture with the proppant flushing medium and the formation medium from the productive formations through the pipe string enters the feed channel for the pumped medium of the jet pump and through it enters the mixing chamber, and in the last it is mixed with the working medium supplied from the nozzle of the jet pump, then the mixture of media obtained in the jet pump is fed from the jet pump through the pipe string to the surface, and after the proppant is removed from the bottom of the well, a flexible pipe with a sealing assembly is flowed from the well, a depression insert with a non-return valve and an autonomous pressure gauge suspended below it is installed on the seat of the support sleeve, the working medium is supplied to the nozzle of the jet pump, the support sleeve is thus moved to the lower position and depression is created on the reservoir, after which the flow of the medium into the nozzle is stopped, and using the depression insert and an autonomous pressure gauge, the formation pressure recovery curves are recorded in the sub-packer space two wells, then a depression insert is removed from the jet pump housing together with an autonomous pressure gauge and a sealing unit is installed on the seat in the support sleeve, through which a logging cable is passed with the possibility of axial movement, a geophysical instrument is installed at its lower end, and a working medium is supplied through the annulus and thereby move the support sleeve to the lower position, feed the working medium into the nozzle of the jet pump, while lowering the bottomhole pressure, then with the jet running the pump is carried out using geophysical instrument registration inflow profiles produced formation medium at different bottomhole pressures in the under-packer space of the well in the interval from its bottom to the input funnel of the liner and in the opposite direction.