Method of operation of horizontal well ejector multifunctional formation tester

FIELD: oil producing industry; pump facilities.

SUBSTANCE: according to proposed method, the following devices are mounted on tubing string in turn from top to bottom: jet pump, upper mechanical packer, lower packer made of elastic material, centering ring, and, on lower end of tubing string with perforated section, self-contained logging complex is installed and said assembly is lowered into on tubing string. In process of lowering, recording of background values of rock physical fields is done and when self-contained logging complex reaches design depth, upper mechanical packer is released and functional insert is installed in stepped through channel of jet pump to record pressure built up curves and then, by delivering liquid medium into nozzle of jet pump, at least three step rising values of drawdowns are built in underpacker zone and by measuring amounts of pumped out liquid on surface during each down, yields are found, and then drawdowns are built additionally and rock physical fields are recorded by self-contained logging complex.

EFFECT: improved reliability and increased capacity at investigation and testing of formations in wells with walls not strengthened by casing string, improved accuracy of geological-field information at earlier stages of well building.

2 cl, 3 dwg

 

The invention relates to the field of pumping machinery, mainly to well pumping installations for the production and stimulation of oil wells.

There is a method of downhole jet unit, including the descent into the well pipe string, with jet pump, manifold and transmitter with receiver-transducer of physical fields with placing below the jet pump (see patent RU 2129671, IPC 7 F 04 F 5/02, 27.04.1999).

This way of working allows pumping from wells produced various environments, such as oil, with the simultaneous study of the well, while the emitter and receiver-transducer of physical fields is placed with the possibility of reciprocating movement along the axis of the borehole relative to the jet pump and the reservoir, but in some cases this is not enough to get full information about the state of the well, which reduces the effectiveness of efforts to stimulate oil production from the well.

Closest to the invention to the technical essence and the achieved result is a method of downhole jet unit, including installation on the string of pipe of the packer and a jet pump, in the case which is made from a passage from the landing place, the descent of this Assembly into the borehole, raspaculo packer and placement in the hole n the same jet pump of underlying instruments (see patent RU 2129672 C1 IPC 7 F 04 F 5/02, 27.04.1999).

This method of downhole jet unit allows various technological operations in the well below the level of the installation of the jet pump, including by creating a pressure differential above and below the sealing site. However, this method of installation does not allow full use of its capabilities, which is associated with a limited set of operations on the intensification of the inflow from the reservoir.

Task to be solved by the present invention is directed, is to increase productivity and intensification of operations research and test wells with open hole and cased barrel, first and foremost, with curved or horizontal barrel, optimizing collaboration packer, jet pump and Autonomous logging complex and due to this, the increase of the reliability of ejector multifunctional plastoispytatelya for horizontal wells, while increasing the reliability of geologic data obtained during testing of wells.

This problem is solved due to the fact that the method works ejector multifunctional plastoispytatelya for horizontal wells is that the string of pipe successively mount the jet pump, in which case the implementation of the Yong stepped pass channel with a mounting seat between steps with the possibility of installation on seat removable functional inserts, top mechanical packer and the lower packer from an elastic material, made in the form of glass bonusnobanes growing up the side wall of the centering ring, and the lower end of the tubing with perforated area establish Autonomous logging complex, the lower the Assembly to the string of pipe into the well, and during the descent carry out the registration using the standalone logging complex background values of physical fields of rocks, after achieving Autonomous logging complex project depths are raspaculo top mechanical packer and set in the stepped pass channel jet pump functional insert for registration recovery curves of reservoir pressure, then through flow of the liquid working medium in the nozzle of the jet pump creates in podvecerni area of not less than three stepwise incrementing values depressions on the formation and measuring on the surface of the volume of liquid pumped out during each depression, determine the flow rate of pumped liquid from the reservoir environment, then optionally create a depression on the formation and support her during the time required to create a funnel of depression, and then using the functional insert for registration recovery curves of reservoir pressure carry out the registration of the curve reset the resolution reservoir pressure in padmakara space well then bring the top of the mechanical packer in the transport position and served in the nozzle jet pump liquid working environment, thus leading lower packer into position, then greneral layer within 2-4 hours, and then when operating the jet pump hold hoist Assembly of the column of pipes and register when using the standalone logging complex physical fields of rocks along a well bore, then remove from the jet pump functional insert for registration recovery curves of reservoir pressure and installed in the stepped pass channel blocking insertion through the Central channel, lower the Assembly to the string of pipe to achieve Autonomous logging complex the bottom of the perforated interval of the reservoir, pumped into the well through the inner cavity of the pipe string, an acid solution or the fracturing fluid and the achievement of the pumped liquid medium the top of the perforated interval of the productive formation are raspaculo upper mechanical seal and crush the acid solution into the formation or conduct hydraulic fracturing, then remove the locking insert and install the stepped pass channel functional insert for registration recovery curves of reservoir pressure, drain well, and pumped the well of the reaction products or the fracturing fluid, and then carry out the registration of the curve recovery reservoir pressure in padmakara space well, and then bring the upper packer in the transport position, is fed into the nozzle of the jet pump liquid environment, lead thus lower packer into position and create a depression on the layer within 2-4 hours, and then when operating the jet pump hold hoist Assembly on the column pipe and register when using the standalone logging complex physical fields of rocks.

In addition, before the last lift Assembly, the tubing may be conducted an additional study of productive layers, for which the string of pipe through its perforated bottom plot is injected into the zone of the reservoir fluid with anomalous physical properties, such as high electrical conductivity, and then in the process of lifting the Assembly on the column pipes conduct the study of the productive formations along the wellbore using the standalone logging complex.

Analysis of ejector multifunctional plastoispytatelya through which implements the described method of his work, showed that the reliability of the installation can be improved by optimization of the sequence and set of operations on stimulation by organizing work is s installation with two packers, one mechanical or hydromechanical, and the other is located below, is made of elastic material and is provided below him on the string of pipe centering it in the casing ring.

It was found that the above arrangement of the jet pump in the well allows the most efficient use of equipment, which is installed on the string of pipe, when working on research and testing of productive strata of rocks, thus created the conditions for obtaining complete and reliable information about the state of the productive strata. The creation of a number of different depressions on the reservoir using a jet pump and check recovery curves of reservoir pressure using the designated functional insert and using stand-alone logging of the complex allows to increase the amount of information received about the state of the productive formation. Control of the magnitude of depression by controlling the rate of pumping the liquid working medium with the creation of a strict, pre-calculated depression improves the accuracy of the information received. Adjustment of the pumping mode when performing the test seams shall be implemented by changing the pressure of the liquid working medium supplied to the nozzle of the jet pump. During testing of the IC is result two structurally distinct packer, which expanded the testing methods and to improve the reliability of the information received. It was found that the registration recovery curves of reservoir pressure and long-term reservoir drainage is useful to rapacuronium mechanical or hydromechanical packer, and the logging of the formation mode of depression - when mechanical or hydro-mechanical packer in the transport position. In this case, the separation space of the well is carried out by means of additional packer from an elastic material. This is because the fixed position of the facility design allows to reduce the error when removing the hydrodynamic characteristics of the wells, and the separation space of the well through the packer from an elastic material allows for dynamic tests of the reservoir, and it is possible in these studies to move relatively well jet pump together with offline logging complex and thus to carry out logging in depression on the layer. During the research it was determined that it is appropriate to long-term drainage within 2-4 hours. The shorter the time of drainage is not possible to have the qualitative influence on the formation and longer effects is it does not give any tangible results, but when this leads to increased time and increased operating costs. Conducting a variety of complex research allows you to expand the amount of information received during a single shutter installation in the borehole. However, it was determined that a more efficient placement of the packer from an elastic material below mechanical or hydro-mechanical packer. In this case, reducing the load on the packer from an elastic material when creating the maximum differential pressure on the packer. Install the stepped pass channel jet pump other functional inserts, in particular the blocking insert, enables to block the locking insert channel flow of the liquid working medium and a channel for supplying the pumped out of the well environment when carrying out work on the annular separation line and space of the well, to prevent getting into the jet pump for foreign objects that could clog the jet pump, which also allows to increase the reliability of the installation. To further increase the accuracy of the data obtained during the registration of the above curves is achieved by performing the functional insert for registration recovery curves of reservoir pressure with a check valve and a bypass valve that, in turn, allows jet to be better handling well and preparing it for operation, and also allows you to speed up and simplify the process of pressure equalization between podplacenym and nadakarni space well. Thus, this way of working ejector multifunctional plastoispytatelya has a wide functionality, which allows high-quality research and test wells after drilling or major repair with comprehensive research and testing in different modes.

Thus, the above set of interdependent parameters with a certain sequence of operations in a given reservoir achieve accomplish in the invention objectives of the intensification of works on research and testing of curved and horizontal wells with open hole and cased barrel in the zone of the reservoir, as well as optimization of the packers when they work together with jet pump and Autonomous logging complex and through this improve the reliability of the downhole jet unit.

Figure 1 shows the longitudinal section of the ejector multifunctional plastoispytatelya with the established functional insert for registration recovery curves of reservoir pressure. Figure 2 presents a longitudinal section of the ejector multifunctional plastoispytatelya is installed locking insert. Figure 3 presents a longitudinal section of the ejector multifunctional plastoispytatelya with rapacuronium the lower packer.

Ejector multifunctional plastoispytatelya contains installed on the column pipe 1 mechanical or hydro-mechanical packer 2, the jet pump 3, a housing 4 which has the nozzle 5 and the mixing chamber 6 with the diffuser 7 and the stepped pass channel 8 and the channel for supplying the pumped medium 17. The stepped pass channel 8 can be installed functional insert, in particular a functional box 9 for registration curves restore reservoir pressure is connected to the logging cable 16, and a locking insert 18. Below the packer 2 on the column pipe 1 has an Autonomous logging system 10 for measuring physical quantities, such as electrical resistivity of rocks or stimulation of physical fields, such as acoustic, and additional packer 11 of elastic material.

The jet pump 3 is installed in the casing 12 above the reservoir 19 wells. The following additional packer 11 on the column pipe 1 is centering the retainer 11 in the casing 12 and the ring 13. In the centering ring 13 is made through holes 14, and the column pipe 1 over Autonomous logging system 10 is made about what verste 15.

The way ejector multifunctional plastoispytatelya for horizontal wells is that the string of pipe 1 sequentially mount the jet pump 3, a housing 4 which is made of the stepped pass channel 8 with a mounting seat between steps with the possibility of installation on seat removable functional inserts, top mechanical or hydro-mechanical packer 2, the lower packer 11 of elastic material, made in the form of glass bonusnobanes growing up the side wall of the centering ring 13, and the lower end of the tubing 1 is installed standalone logging system 10. This Assembly is lowered on the column pipe 1 into the well, and during the descent carry out the registration of the background values of physical fields of rocks Autonomous logging system 10. After achieving Autonomous logging system 10 project depths are raspaculo the upper packer 2 and installed in the stepped pass channel 8 jet pump 3 functional insert 9 for registration recovery curves of reservoir pressure. By flow of the liquid working medium to the nozzle 5 of the jet pump 3 create podvecerni area of not less than three stepwise incrementing values depressions on the formation and measuring on the surface of the volume of liquid evacuated for the duration of ka is DOI depression, determine the flow rate of pumped liquid from the reservoir environment. Then optionally create a depression on the layer 19 and support her during the time required to create a funnel of depression, and then using the function insert 9 for registration recovery curves of reservoir pressure carry out the registration of the curve recovery reservoir pressure in padmakara space well. Then bring the upper packer 2 in the transport position and served in the nozzle 5 of the jet pump liquid working environment, thus leading lower packer 11 in the working position. Next, greneral layer 19 within 2-4 hours, and then when operating the jet pump 3 is conducted lifting Assembly pipe string 1 and register when using the standalone logging complex 10 physical fields of rocks, and then removed from the body 4 of the jet pump 3 functional box 5 for registration recovery curves of reservoir pressure and installed in the stepped pass channel 8 blocking box 18 through the Central channel. Put the Assembly on the column pipe 1 to achieve Autonomous logging system 10 of the bottom of the perforated interval of the formation. Pumped into the well through the inner cavity of the pipe string 1 acid solution or the fracturing fluid and the achievement of the pumped liquid medium in the upper is erval perforation of the productive layer 19 are raspaculo the upper packer 2 and crush the acid solution into the reservoir 19 or conduct hydraulic fracturing 19. Then remove the blocking insert 18 and installed in the stepped pass channel 8 depression box or soft box 9 for registration recovery curves of reservoir pressure. Then conduct a drainage reservoir wells in the process of being pumped from the well of the reaction products or the fracturing fluid. Then carry out the registration of the curve recovery reservoir pressure in padmakara space well, and then bring the upper packer 2 in the transport position, is fed into the nozzle 5 of the jet pump 3 liquid environment, lead thus lower packer 11 in the working position and create a depression on the layer within 2-4 hours. Then spend the rise of the Assembly on the column pipe 1 when operating the jet pump 3 and register when this physical field of rocks using the standalone logging system 10.

The present invention can be used in the oil and mining industry for testing oil and gas wells during drilling and operation.

1. The way ejector multifunctional plastoispytatelya for horizontal wells, which consists in the fact that the string of pipe successively mount the jet pump, which body is made of the stepped pass channel with a mounting seat between steps in with what zmoznostjo installation on seat removable functional inserts, top mechanical or hydro-mechanical packer and the lower packer from an elastic material, made in the form of glass bonusnobanes growing up the side wall of the centering ring, and the lower end of the tubing with perforated area establish Autonomous logging complex, the lower the Assembly to the string of pipe into the well, and during the descent carry out the registration of the background values of physical fields of rocks, after achieving Autonomous logging complex project depths are raspaculo the upper packer and set in the stepped pass channel jet pump functional insert for registration recovery curves of reservoir pressure, then through flow of the liquid working medium into the jet pump nozzle create podvecerni area of not less than three stepwise incrementing values depressions on the formation and measuring on the surface of the volume of liquid pumped out during each depression, determine the flow rate of pumped liquid from the reservoir environment, then optionally create a depression on the formation and support her during the time required to create a funnel of depression, and then using the functional insert for registration recovery curves of reservoir pressure carry out the registration of the curve recovery reservoir pressure in the cap is the core space of the well, then bring the upper packer into the transport position and served in the nozzle jet pump liquid working environment, thus leading lower packer into position, then drain the reservoir within 2-4 h, and then when operating the jet pump hold hoist Assembly of the column of pipes and register when using the standalone logging complex physical fields of rocks along a well bore, then remove from the jet pump functional insert for registration recovery curves of reservoir pressure and installed in the stepped pass channel blocking insertion through the Central channel, lower the Assembly to the string of pipe to achieve Autonomous logging system of the lower the perforated interval of the reservoir, pumped into the well through the inner cavity of the pipe string, an acid solution or the fracturing fluid and the achievement of the pumped liquid medium the top of the perforated interval of the productive formation are raspaculo the upper packer and crush the acid solution into the formation or conduct hydraulic fracturing, then remove the locking insert and install the stepped pass channel functional insert for registration recovery curves of reservoir pressure, drain well, and pumping from wells and reaction by-products and the fracturing fluid, and then carry out the registration of the curve recovery reservoir pressure in padmakara space well, and then bring the upper packer in the transport position, is fed into the nozzle of the jet pump liquid environment, lead thus lower packer into position and create a depression on the layer within 2-4 h, and then when operating the jet pump hold hoist Assembly of the column of pipes and register when using the standalone logging complex physical fields of rocks.

2. The way ejector multifunctional plastoispytatelya for horizontal wells according to claim 1, characterized in that before the last lift Assembly pipe string, conduct an additional study of productive layers, for which the string of pipe through its perforated bottom plot is injected into the zone of the reservoir fluid with anomalous physical properties, such as high electrical conductivity, and then conduct a study of productive formations along the wellbore using the standalone logging complex.



 

Same patents:

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

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

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

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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