Ejector multifunctional formation tester for testing and completion of horizontal wells

FIELD: oil producing jet units.

SUBSTANCE: proposed formation tester contains jet pump, unit for connecting and disconnecting tubing string, valve unit with seat for valve insert with check valve, packer and liner with intake funnel, all mounted on tubing string from top to bottom. Jet pump housing accommodates coaxially installed active nozzle and mixing chamber, and channels are made to deliver active medium, pumped out of well and stepped through channel with seat between steps. Possibility is provided for in-turn mounting of sealing unit and interlock insert with through channel which are arranged on flexible smooth pipe higher than tip for connecting self-contained logging complex and insert for recording pressure built-up curves I underpacker space of well under which self-contained instruments are installed for recording pressure, temperature and other physical parameters of well and forming fluids. Invention provides intensification of investigation, testing and preparation of wells, mainly, horizontal and high curvature wells, optimization of operation of jet pump used together with self-contained logging complex and other functional insets for investigation of producing formation.

EFFECT: improved reliability and increased capacity of operation.

3 cl, 3 dwg

 

The invention relates to the field of pumping machinery, mainly to the downhole jet installations for the extraction of oil from wells.

Known downhole jet installation comprising a tubing pipes with jet pump, packer and drill with the possibility of pumping the liquid working medium through the jet pump (see inventor's certificate SU 1146416, E 21 In 43/116, 23.03.1985).

This downhole jet setting allows the perforation of the well and to intensify the pumping of the wells produced various environments, such as oil, however, this setting does not allow the study of the near-well zone of the reservoir, which in some cases leads to a decrease in the efficiency of intensifying work well because of the lack of information about how a productive formations. Thus, the effectiveness of drainage wells do not produce the expected results.

Closest to the invention to the technical essence and the achieved result is an installation comprising a set on the column tubing packer with the Central channel and the jet pump with the active nozzle, a mixing chamber and a through channel with a mounting seat for installing a sealing site with an axial channel, while the plant is equipped with radiation is the motor and receiver-transducer of physical fields, posted in podvecerni area from the entrance to the jet pump pumped from the borehole environment and set on wireline, which is passed through the axial channel of the sealing of the node, and the output of the jet pump connected to the space surrounding the string of pipe, the inlet channel for supplying the pumped medium jet pump is connected to the inner cavity of the pipe string below the sealing site, and the entrance channel flow of the liquid working medium to the active nozzle is connected to the inner cavity of the pipe string above the sealing of the node (see patent RU 2121610, F 04 F 5/02, 10.11.1998).

This setting allows for various technological operations in the well below the level of the installation of the jet pump, including by reducing the pressure differential above and below the sealing site. However, this setting allows for the study of productive breeds only in trunks, close to vertical, which limits the scope of use of this unit. In addition, the limited amount of work that can be done well without lifting installation on the surface, which lengthens the period of execution of works on testing and well completion.

Task to be solved by the present invention is directed, is to intensify the research, testing and preparation of wells, especially wells St is izontally and the greater curvature, optimization of operation of jet pump when it is used in conjunction with offline logging and other complex functional inserts for the study of the productive formation and improving the reliability and performance of ejector multifunctional plastoispytatelya.

This problem is solved due to the fact that the ejector multifunctional plastoispytatelya for testing and development of horizontal wells contains mounted down on the string of pipe jet pump, the node for the separation and connection of the tubing, the valve site with a landing place for installation of the valve insert with a check valve, a packer and a shank with an input funnel, and in the case of the jet pump is coaxially installed active nozzle and a mixing chamber, and a channel for supplying an active medium, a channel for supplying the pumped out of the well environment and the stepped pass channel with a mounting seat between steps in the stepped pass channel provided the opportunity alternate install sealant node and a blocking insert with a through channel, which is placed on the flexible smooth pipe above tip to connect offline logging complex, as well as inserts for registration recovery curves of reservoir pressure in padmakara question is ransta well, under which set of Autonomous instruments for measurement of pressure, temperature and other physical parameters of the borehole and formation fluids in the inset bypass channels and is a bypass valve for pressure equalization above and below the insert, the output of the jet pump is connected to the inner cavity of the pipe string above the sealing site, the active nozzle of the jet pump through the channel for supplying an active medium is connected to the annular space of the pipe string, the channel for supplying a pumped from the borehole environment is connected to the inner cavity of the pipe string below the sealing site, the diameter of the axial channel of the sealing site is larger external diameter flexible pipes not less than 0.2 mm, external the diameter of the flexible pipe is equal to from 0.4 to 0.95 diameter flow channel blocking insertion and flexible smooth pipe made of composite material, reinforced conductive wire with the possibility of its use for electrical connection, offline logging complex with logging laboratory on the surface.

In the transport position, the flexible smooth pipe can be wound on the winch drum located on the chassis of the vehicle, such as a car, and flexible smooth tube from its lower end may be made with holes in its wall.

Anal is C different designs ejector plastoispytatelya showed that reliability can be improved by increasing the functionality of the installation, and by optimizing the design elements and action sequences in the test and development of wells, primarily with outdoor and/or curved trunk.

It was found that the above set of structural elements plastoispytatelya allows you to organize such a sequence of actions, which is most effectively used equipment, which is installed on the string of pipe when working on research, testing and development of the productive strata of rocks. This created the conditions for obtaining complete and reliable information about the state of the productive strata, and for the treatment of productive layers in the course of the study. The plastoispytatelya allows you to create a number of different depression using a jet pump in podvecerni the well area with a given value of the differential pressure, and using the standalone logging complex and inserts for registration recovery curves of reservoir pressure installed underneath Autonomous instruments to conduct research and testing of wells. At the same time, it is possible to control the amount of depression by controlling the rate of pumping the liquid working the environment. When conducting testing of formations you can adjust the pumping mode by changing the pressure of the liquid working medium supplied to the nozzle of the jet pump. Installation logging complex on the flexible smooth pipe, which has been passed through the sealing site with the possibility of axial movement allows for more qualitative research on borehole geophysical methods and the installation of the locking insert to pass through it flexible smooth pipe allows without reinstalling the downhole jet unit to produce a well treatment and first of all productive formations wells to increase their productivity, which ultimately allows you to speed up and simplify the process of testing and preparation of wells for use.

To improve the reliability of plant operation and reduce the impact of flows on the test results, and acceleration testing is necessary to ensure a well-defined aspect ratios. Most critical in this respect, the ratio of the diameter of the axial channel of the sealing host and port blocking insert with respect to the outer diameter of the flexible smooth pipe. It was found that the most preferable that the diameter of the axial channel of the sealing site was greater than the outer diameter of the flexible tube m is it than 0.2 mm, and the outer diameter of the flexible pipe is equal to from 0.4 to 0.95 from the diameter of the flow channel blocking inserts. It is reasonable to flexible smooth pipe was made of composite material, reinforced conductive wire with the possibility of its use for electrical connection, offline logging complex with logging laboratory on the surface.

In the transport position, the flexible smooth pipe can be wound on the winch drum located on the chassis of the vehicle, such as vehicle, allowing for faster installation. And the implementation of flexible smooth tube from its lower end with openings in its wall allows the processing of the near-well zone of the reservoir liquid agents without dismantling or reinstallation of equipment. The result is the intensification of works on research and development wells.

Thus, this ejector multifunctional plastoispytatelya for testing and development of horizontal wells allows for a qualitative study and test wells after drilling and overhaul, and the preparation of wells for operation with comprehensive research and testing in different modes.

The result achieved the goals set forth in the invention the task is to intensify work on the exploration and test wells with horizontal, including open hole, as well as optimization of jet pump combined with the logging industry and functional inserts and due to this, the increase of the reliability of ejector plastoispytatelya.

Figure 1 shows a longitudinal section plastoispytatelya sealing site. Figure 2 shows a longitudinal section plastoispytatelya with insert for registration curve recovery reservoir pressure. Figure 3 shows a longitudinal section plastoispytatelya with locking insert.

Ejector multifunctional plastoispytatelya for testing and development of horizontal wells contains mounted down on the string of pipe 1 jet pump 2, node 3 to disconnect and connect the tubing 1, the valve unit 4 with a mounting seat 5 for installation of the valve insert with non-return valve 6, the packer 7 and the shaft 8 with the inlet funnel 9. In the housing 10 of the jet pump 2 is coaxially installed active nozzle 11 and the mixing chamber 12, and a channel for supplying an active medium 13, channel 14 for supplying the pumped out of the well environment and the stepped pass channel 15 with a mounting seat between steps in the stepped pass channel 15 provides for installation of sealant node 16, which is movably placed on the flexible smooth pipe 17 above the tip is for the connection of standalone logging complex 18, functional inlays: block 19 from passing through the bypass channel 20, and the insert 21 to register recovery curves of reservoir pressure in padmakara space well together with auxiliary devices (for example, pressure gauge, thermometer and flow meter) 22 and by-pass valve 25. The output of the jet pump 2 is connected to the inner cavity of the pipe string 1 above sealing node 16, the active nozzle 11 jet pump 2 through the channel 13 for supplying an active medium is connected to the annular space of the well pipe string, 1) and channel 14 for supplying a pumped from the borehole environment is connected to the inner cavity of the pipe string 1 below the sealing of the node 16.

The diameter (D) of the axial channel of the sealing site of 16 greater than the external diameter (D1) flexible smooth pipe 17 is not less than 0.2 mm, the outer diameter of the flexible tube 17 is equal to from 0.4 to 0.95 diameter (D2) pass channel 20 of the blocking insert 19 and the flexible smooth pipe 17 is made of a composite material reinforced conductive wire, which allows its use for electrical connection, offline logging complex 18 with logging laboratory on the surface.

Flexible pipe 17 from the side of its lower end may be made with holes 23 in its wall. In the transport position, the flexible smooth pipe can be numot is on the winch drum, located on the chassis of the vehicle, such as a vehicle (not shown in the drawing).

Work ejector multifunctional plastoispytatelya for testing and development of horizontal wells downhole jet unit lies in the fact that they are carrying out the Assembly of the column pipe 1 in the following sequence: set down on the string of pipe 1 jet pump 2, node 3 to disconnect and connect the tubing 1, the valve unit 4 with a mounting seat 5 for installation of the valve insert with non-return valve 6, the packer 7 and the shaft 8 with the inlet funnel 9. When descending, the packer 7 installed above the roof of the productive layer 24. Then spend raspaculo packer 7 and make a run into the well on coiled tubing 17 Autonomous logging complex with 18 movably placed above him on the flexible tube 17 sealing the node 16, which is placed on a seat in the flow channel 15 jet pump 2, and Autonomous logging complex 18 is placed in the zone of the reservoir 24. During the descent register offline logging complex 18 background values of physical fields of rocks, such as thermal field along the borehole. Next jet pump 2 by filing the active nozzle 5 liquid working environment create a depression in the reservoir 18, draining it therefore is om, and when operating the jet pump 2 conduct the registration of the current values of the physical fields of rocks and flowing into the well formation fluid, and during registration through a flexible pipe 17 carry out the move offline logging complex 18 along a well bore, including the reservoir 24. Then removed from the wells Autonomous logging complex 18 with a flexible tube 17 and the sealing hub 16 and is installed in the flow channel 15 jet pump 2 box 21 for registration recovery curves of reservoir pressure in padmakara space with independent pressure gauge 22 and by the flow of the liquid working medium to the active nozzle 11 jet pump 2 conduct a drainage layer with a gradual creation of at least three successively increasing the values of depression in the reservoir 24 by registering with each of the downhole pressure, flow rate, composition and physical parameters coming from the reservoir 24 of the fluid. Next, perform a cyclic hydrodynamic effects on the reservoir 24 to clear his near-wellbore zone from clogging particles by creating at least five cycles of depression + repression, and depression create by filing an active medium in the nozzle 11 jet pump 2, and the repression stop jet pump 2 and through the opening after the insert 21 to register recovery curves of reservoir pressure by-pass valve 25, and then repeated pumping extracted from the borehole environment with gradual creation of at least three, successively increasing the values of the depression on the layer 24, by registering with each of the downhole pressure, flow rate, composition and physical parameters coming from the reservoir fluid, and after reaching the last highest value of depression abruptly stop the flow of fluid in the nozzle 11 jet pump 2 and conduct the registration of the curve recovery reservoir pressure in padmakara space well, and the above cycle hydrodynamic testing to repeat until performance well after the last cycle hydrodynamic testing will not reach the design values. Next, remove the insert 21 to register recovery curves of reservoir pressure in padmakara space with a stand-alone pressure gauge 22 and dropping in the hole blocking box 19 with the bypass channel 20, which put on a seat in the flow channel 15 jet pump 2 and, thus, divide the internal cavity of the pipe string 1 and the space surrounding the string of pipe 1. Then are injected into the reservoir 24 chemicals or fracturing fluids with propanda, remove the blocking insert 19 and discharged into the column pipe 1 valve is a bet with a check valve 6, you put on a seat in the valve unit 4, and then discharged into the column pipe 1 box 21 for registration recovery curves of reservoir pressure in padmakara space well with the stand-alone pressure gauge 22 and by filing under the pressure of a liquid medium to the active nozzle 11 jet pump 2 are pumped from the reservoir 24 of the reaction products of the chemical or liquid fracturing with proppant remains, then carried out by feeding the liquid medium to the active nozzle 11 jet pump 2 drainage layer 24 with a gradual creation of at least three successively increasing the values of the depression on the layer 24, by registering with each of them downhole pressure, flow rate, composition and physical parameters coming from the reservoir fluid, and after reaching the last highest value of depression abruptly stop the flow of fluid in the nozzle 11 jet pump 2 and conduct the registration of the curve recovery reservoir pressure in padmakara space well, then remove the insert 21 to register recovery curves of reservoir pressure in padmakara space well with a stand-alone pressure gauge 22 and raise the jet pump 2 with part of the pipe string 1 above node 3 for disconnection and connection of the column pipe 1, while the bore of the shank 9 with the packer 7 and klapan the th node with reverse valve 6, thus preventing ingress into the reservoir 24 working agent. Then lowered into the well on a string of pipe 1 pump for the extraction from it of a liquid medium (not shown in the drawing) and connect the column pipe 1 from node 3 to disconnect and connect the tubing, and then run the well.

After landing a blocking insert 19 through the latter may be held down in the well in the zone of the reservoir 24 of the flexible tube 17 and the latter is held injected into the reservoir 24 chemicals or fracturing fluids with propanda and washing of the bottom hole from the sandy tubes.

The present invention may find application in the oil industry in testing and development of horizontal and curved as well as in other industries, where it has been producing various media from wells.

1. Ejector multifunctional plastoispytatelya for testing and development of horizontal wells containing mounted down on the string of pipe jet pump, the node for the separation and connection of the tubing, the valve site with a landing place for installation of the valve insert with a check valve, a packer and a shank with an input funnel, and in the case of the jet pump is coaxially installed active nozzle and a mixing chamber, and a channel for supplying an active is Reda, channel supply pumped from the borehole environment and the stepped pass channel with a mounting seat between steps in the stepped pass channel provided by the alternate install sealant node and a blocking insert with a through channel, which is placed on the flexible smooth pipe above tip to connect offline logging complex, as well as inserts for registration recovery curves of reservoir pressure in padmakara space well, which has an Autonomous instruments for measurement of pressure, temperature and other physical parameters of the borehole and formation fluids in the inset bypass channels and is a bypass valve for pressure equalization above and below the insert, the output jet pump is connected to the inner cavity of the pipe string above the sealing site, the active nozzle of the jet pump through the channel for supplying an active medium is connected to the annular space of the pipe string, the channel for supplying a pumped from the borehole environment is connected to the inner cavity of the pipe string below the sealing site, the diameter of the axial channel of the sealing site is larger external diameter flexible pipes not less than 0.2 mm, the outer diameter of the flexible pipe is equal to from 0.4 to 0.95 diameter flow channel blocking insertion and flexible the smooth pipe made of composite material, reinforced conductive wire with the possibility of its use for electrical connection, offline logging complex with logging laboratory on the surface.

2. The plastoispytatelya according to claim 1, characterized in that in the transport position, the flexible smooth pipe is wound on the winch drum located on the chassis of the vehicle, such as a car.

3. The plastoispytatelya according to claim 1, characterized in that the flexible smooth pipe from the side of its lower end is made with holes in its wall.



 

Same patents:

FIELD: oil producing industry; pump facilities.

SUBSTANCE: method comes to mounting the following device onto tubing string: pump with through channel, packer and liner with intake funnel, lowering the assembly into well, releasing the packer and creating required drawdown in underpacker zone by pumping liquid medium out of underpacker zone by jet pump. Assembly is furnished additionally with unit for disconnecting and connecting tubing string, and valve unit with seat for mounting check valve, and then tubing string is assembled in definite sequence. After these operation, investigation, testing and completion of well are carried out. Then well is set in operation.

EFFECT: intensified investigation, testing and completion of horizontal crooked wells, improved reliability of formation tester.

2 cl, 3 dwg

FIELD: oil producing industry; oil-well testing and completing facilities.

SUBSTANCE: according to proposed method the following devices are lowered into oil well, being installed on tubing string in series from bottom to top: erosion perforator, linear with intake funnel, packer and jet pump with stepped through channel. Erosion perforator is installed in oil producing formation interval. Blocking insert with axial through channel is installed in stepped through channel of jet pump, thus separating inner space of tubing string from oil well annulus. Mixture of liquid medium with finely dispersed abrasive material is pressure fed into erosion perforator and by acting onto walls of well with jets of said mixture, vertical slot perforation channels are made in bottom hole formation zone. Erosion perforator is disconnected from linear with intake funnel is dropped to bottom, intake funnel of linear is installed over top of formation, packer is released, blocking insert is taken out and complex geophysical instrument is lowered through tubing string on logging cable passed through sealing unit for axial displacement relative to unit into zone of producing formation. Sealing unit is installed in stepped through channel of jet pump, thus separating inner space of tubing string. In process of lowering of complex geophysical instrument, recording of background values of geophysical parameters of oil well and producing formation is carried out by means of complex geophysical instrument. By delivering working medium through tubing string annulus into jet pump nozzle, at least one drawdown is built, and well production rate is determined at each drawdown, after which profile of influx from producing formation at different values of drawdown is recorded by means of geophysical instrument, said instrument with sealing unit is lifted to surface, and blocking insert with axial through channel is fitted in stepped through channel of jet pump, thus separating inner space of tubing string from oil well annulus. Packer is set and intake funnel of liner is installed at level of sole of perforated interval of producing formation, and hydraulic fracturing liquid with chemical reagents and propant is pumped into tubing string to top of perforated interval. Then packer is released again and hydraulic fracturing is pumped into producing formation, thus forming vertical cracks in formation. Blocking insert is taken out of stepped through channel and differential pressure insert is fitted in stepped through channel with self-contained geophysical instrument, working medium is delivered through tubing string annulus into nozzle of jet pump and drawndown is built on producing formation with pumping out of reaction products and hydraulic fracturing liquid with movable part of propant along tubing string to surface. Then pressure differential insert is taken out, packer is set and tubing string is lifted to level of intake funnel of liner over producing formation top and packer is released again. Complex geophysical instrument with sealing unit is lowered o logging cable along tubing string, sealing unit is installed in stepped through channel of jet pump, and complex geophysical instrument is installed at outlet of intake funnel. Working medium is fed into jet pump nozzle and, using said pump, number of drawdowns is built and well production rate is recorded at each drawdown, and then influx profile is recorded at each value of drawdown moving complex geophysical instrument along producing formation, then delivery of working liquid into jet pump is cut off and complex geophysical instrument with sealing unit is lifted to surface, after which operations are carried out to set well in operation.

EFFECT: enlarged operating capabilities of unit, improved efficiency of testes and bottom hole treatment.

3 dwg

FIELD: oil producing industry; well testing and completion facilities.

SUBSTANCE: proposed pump-ejector impulse well jet plant contains the following devices mounted on tubing string from bottom to top: hydroperforator, liner with intake funnel, packer and jet pump in housing of which active nozzle and mixing chamber with diffuser are installed and channel is made to supply active medium, channel to supply medium pumped out of well and stepped through channel. Provision is made for mounting locking insert with through channel by means of which active medium supply channel is overlapped or depression insert by means of which cross section of tubing string is closed, or sealing unit with axial channel through which logging cable is passed on which complex geophysical instrument is mounted. The latter is arranged in well with possibility of displacement relative to producing to producing formation on logging cable. Hydroperforator is installed for its remote separation from liner intake funnel. Packer is provided with central channel to pass complex geophysical instrument.

EFFECT: enlarged functional capabilities of plant, improved efficiency of surveying and treatment of bottom-hole formation zone.

3 dwg

FIELD: oil production.

SUBSTANCE: plant comprises column of pump-compressor pipes and fluidic apparatus and packer mounted on the column in series from top to bottom. The housing of the fluidic apparatus receives active nozzle and mixing chamber with diffuser and is provided with the passage for supplying fluid, passage for supplying fluid to be pumped out, and central through passage with a seat for installation of a functional insert. The packer is mounted on the column below the fluidic apparatus. The functional insert in the central through passage is made of a sealing insert provided with the axial passage for cable which holds a geophysical instrument below the fluidic apparatus. The bottom part of the sealing insert has spring-loaded by-pass valve through which the passage for supplying the fluid to be pumped out above the check valve is connected with the under-packer space of the well.

EFFECT: expanded functional capabilities.

2 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: device has body placed in body of stream pump and has locking valve and axial channel for logging cable with fixed logging device. Device also has discharge valve. Device body has ports in middle portion, which connect middle hollow portion of device to displacement chamber for stream pump. In upper and lower portions of body of device upper and lower compactors are placed, limited by support elements on each side of the latter, respectively. Locking valve is mounted in lower portion of device and mated with inner space of tubing string and logging device. Axial channels of valves are eccentric and parallel to first channel of device, while discharge valve is provided with rod with its end prominent relatively to body of device.

EFFECT: broader functional capabilities, higher reliability.

4 dwg

The invention relates to the field of pumping machinery, mainly to the downhole jet apparatus for cleaning wells

The jet pump // 2232305
The invention relates to inkjet technology and can be applied in devices for transportation of various fluids or feeding into the flow of additional protection, such as aeration fluid flows

The invention relates to the field of pumping machinery, mainly to well pumping units for oil extraction from wells

The invention relates to the field of pumping machinery, mainly to well pumping units for oil extraction from wells

FIELD: oil producing industry; pump facilities.

SUBSTANCE: method comes to mounting the following device onto tubing string: pump with through channel, packer and liner with intake funnel, lowering the assembly into well, releasing the packer and creating required drawdown in underpacker zone by pumping liquid medium out of underpacker zone by jet pump. Assembly is furnished additionally with unit for disconnecting and connecting tubing string, and valve unit with seat for mounting check valve, and then tubing string is assembled in definite sequence. After these operation, investigation, testing and completion of well are carried out. Then well is set in operation.

EFFECT: intensified investigation, testing and completion of horizontal crooked wells, improved reliability of formation tester.

2 cl, 3 dwg

FIELD: mining industry.

SUBSTANCE: system has first induction throttle, second induction throttle and controlled switch. Second induction throttle is positioned near second branch of pipeline structure. Controlled switch has two outputs. First switch output is electrically connected to pipeline structure on the side of induction throttles connection, where first and second branches of pipeline structure intersect. Second output of switch is electrically connected to pipeline structure on other side of at least one induction throttle. Pipeline structure can be positioned inside oil well, and can have casing string and operation tubing column. Also described is method for extracting oil products from oil well using said system.

EFFECT: higher efficiency.

4 cl, 10 dwg

FIELD: oil industry.

SUBSTANCE: at least one acoustic dynamic is mounted immediately on product pipe in oil well and acoustic characteristic of flowing environment flow is determined in product pipe. It is sent into surface controller, using product pipe. Using surface controller flowing substance flowing mode is determined, on basis of which working parameters of oil well are adjusted. Working parameters of oil well can be adjusted to detect Taylor mode of flow. For adjustment of working parameters throttle is used and/or controlled valve of oil well, controlling amount of gas, forces into product pipe. For determining mode of flow of flowing environment artificial neuron net can be used. It is possible is provide energy for acoustic sensor through product pipe. It is possible to determine additional physical characteristics of flowing substance, for example pressure and temperature.

EFFECT: higher efficiency.

3 cl, 22 dwg

FIELD: oil producing industry; pumping facilities.

SUBSTANCE: according to proposed method jet pump with stepped through channel in its housing and packer with through channel and complex logging device are lowered into well on tubing string. Logging device is installed under packer on tubing string. Perforated section is made on tubing string from side of its lower end. In process of lowering, using logging device, background values of physical parameters of producing formations are recorded, and then packer is released. Packer is installed higher than producing formations under surveying, and complex logging device is installed in zone of producing formations. Then depression insert is installed in stepped through channel of jet pump housing to separate tubing string, and working liquid medium is fed into nozzle of jet pump, thus building different value depressions in underpacker space of well. At each value of depression, well production rate is measured and then, with jet pump operating, complex logging device is moved along producing formations by displacing tubing string without depacking of packer and geophysical parameters of producing formations are recorded. After completion of surveying, depacking of packer and lifting of tubing string with jet pump and logging device to surface is done.

EFFECT: provision of intensification of surveying, testing and preparation of wells, mainly, horizontal and highly slanted wells, optimization of functions of packer and improved reliability of jet plant.

1 dwg

FIELD: oil producing industry; pumping facilities.

SUBSTANCE: proposed well jet plant contains packer and jet pump installed on tubing. Pump is provided with nozzle and mixing chamber with diffuser installed in housing, and stepped through channel is made. Possibility is provided for fitting functional inserts in through channel, for instance, for recording formation pressure built-up curves, and self-contained logging complex is installed on tubing lower than packer for checking physical values, for instance, specific electric resistance of rocks. Jet pump is arranged in casing over producing formation of well. Ring is arranged on tubing lower than packer to center packer in casing. Packer is made of elastic material in form of open-top cup with cone-shaped side wall. Bottom of cup is hermetically secured on tubing, and packer, in its position before removing, has the following dimensions: maximum outer diameter of packer side wall D2 is 0.75-0.99 of inner diameter D1 of casing; length L of packer is from 0.5 to 3 diameters D4 of packer cup bottom; maximum inner diameter D3 of side wall of packer cup is 0.6-0.96 of maximum outer diameter D2of packer cup; and outer diameter D5 of centering ring is 0.8-1.05 of diameter D4 of packer cup bottom.

EFFECT: intensification of surveying and testing of walls with open and cased holes, mainly crooked and horizontal holes, optimization of sizes of packer operating together with jet pump and self-contained logging complex, improved reliability of well jet plant.

2 cl, 1 dwg

FIELD: oil producing industry; pumping facilities.

SUBSTANCE: method includes lowering of tubing with packer and support into well. Support is provided with bypass ports and seat. Then releasing of packer is carried out. Equipment is fitted on smooth flexible pipe on the ground. For this purpose lower end of flexible pipe is first passed through channel of sealing unit for displacing flexible pipe relative to sealing unit, and then pipe end is passed through stepped through channel and pumped out medium supply channel in jet pump housing, after which end piece is connected to lower end of smooth flexible pipe and instrument for surveying or treatment of producing formation is connected to lower end of flexible pipe, for instance, logging device or perforator and then sealing unit is arranged in stepped through channel of jet pump and flexible pipe with jet pump and instrument for surveyor treatment of producing formation is lowered through tubing into well. When jet pump reaches support, jet pump is fitted in seat in support after which smooth flexible pipe is lowered until instrument for surveying or treatment of producing formation reaches zone of surveying or treatment of producing formation. In process of lowering of smooth flexible pipe, recording of background values of physical parameters of rocks, for instance, temperature patterns, is carried out.

EFFECT: optimization of preparation of jet plant for operation, increased of jet plant at surveying and treatment of crooked and horizontal wells with open or cased hole.

2 cl, 1 dwg

FIELD: well drilling technologies.

SUBSTANCE: method includes cutting a special conic thread, which is made with triangular profile with rounded corners, at sleeve and nipple portions of electric separator, sand-stream treatment is performed and also grease is removed from parts screwed together. After that a sub-layer is applied to increase adhesive metal properties. Composition dielectric material is applied to threaded connection of nipple portion, after that thread shape is altered by this material, then adhesive is applied to screwed surfaces of threads and sleeve and nipple portions of electric separator are screwed together. After that a layer of dielectric substance is applied along outer surface of subs. Inside the electric separator a dielectric insert is mounted or dielectric film is applied by pressing method with use of press-form. Dielectric film is applied on outer surface of electric separator by forming method under pressure with use of press-form or of composition dielectric material by winding method.

EFFECT: higher durability and reliability.

1 dwg, 1 ex

The invention relates to a field Geophysics and is intended to measure downhole parameters during drilling of directional and horizontal wells in the shielding layers with high conductivity, for example, in salt formations

FIELD: well drilling technologies.

SUBSTANCE: method includes cutting a special conic thread, which is made with triangular profile with rounded corners, at sleeve and nipple portions of electric separator, sand-stream treatment is performed and also grease is removed from parts screwed together. After that a sub-layer is applied to increase adhesive metal properties. Composition dielectric material is applied to threaded connection of nipple portion, after that thread shape is altered by this material, then adhesive is applied to screwed surfaces of threads and sleeve and nipple portions of electric separator are screwed together. After that a layer of dielectric substance is applied along outer surface of subs. Inside the electric separator a dielectric insert is mounted or dielectric film is applied by pressing method with use of press-form. Dielectric film is applied on outer surface of electric separator by forming method under pressure with use of press-form or of composition dielectric material by winding method.

EFFECT: higher durability and reliability.

1 dwg, 1 ex

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