Adaptive throttle-limiting filtering chamber of well completion system

FIELD: oil and gas industry.

SUBSTANCE: device contains a spherical body with at least one segment containing at least one section of throttle joints and one limiting. Stream is fed to the segment from the butt end, through side channels. Each input unit can be covered by a roller gate of the plug with thread which is input through the chamber body.

EFFECT: increasing oil recovery of the formation.

12 cl, 1 dwg

 

The invention relates to the field of mining, namely the production of liquid fluid from wells.

The developed device can be used to regulate the flow of produced fluid, namely oil from wells, and to replace the oil in the reservoir or her warm-up using the additional input of a fluid medium, in particular water, steam or steam-water mixture.

For the production of liquid minerals used well, the length of the system oceniania (work area) which can reach 500 meters or more. This length can be arranged in layers with different geological characteristics of permeability or flow of liquid and/or gaseous phase. The entire flow along the length of the working area of the borehole should optimally be collected in the collecting pipe. To do this, create a certain plot of pressure along the length of the collapsible tube. It is desirable to maintain uniform flow of the liquid phase on separate areas of the work area. Uniform inflow reduces the possibility of breakthrough of gas and, consequently, increases the oil recovery.

National pipe work area are collected from individual filters. Every filter has a camera, which is going to flow over the entire length of the latter. To ensure uniform flow necessary for the length of the work at Asda to reconcile the pressure in the collapsible tube. This is achieved through the use of throttle devices located inside the filter chamber. Throttle devices provide hydraulic resistance of flow and accordingly determine the differential pressure between the reservoir and the team of the pipe. Thus, the selection of the hydraulic characteristics of the throttle devices configure the entire system oceniania well in General.

Known (RU, patent 95026) circular limiter flow of liquid, gas or gas-liquid mixture in the well. Known circular limiter includes at least one piece of restricting the flow, the input portion of which contains at least one input channel, the output plot restrictive fragment made with discretely increasing the area of the bore and contains at least one degree with two outputs, between the input and output sections is a restrictive neck fragment.

A disadvantage of the known device in relation to the tasks should recognize the impossibility of choice and connect the required number of restriction fragments directly before lowering equipment into the well.

It is known (RU, patent 92905) device to control the flow of fluid coming into production or injection column wells. The known device is about includes a housing with input and output fluid flow, connected to the network of channels for the flow of liquid, with a network of channels made with the possibility of a large hydraulic resistance of the moving stream. In case there is at least one segment, which includes at least one section of the throttle scallops, and to segment the stream down from the side through the channels on the side.

A disadvantage of the known device in relation to the tasks should recognize the complexity of the configuration of the equipment immediately before it is run into the well.

The specified source is used as the closest analogue of the developed device.

The technical problem to be solved by the developed device is to create optimal conditions for the production of liquid minerals, particularly oil.

The technical result obtained by the implementation of the developed design is to improve oil recovery.

To achieve the technical result it is proposed to use an adaptive throttle-restrictive camera filter system oceniania well. The specified adaptive throttle-restrictive camera filter system oceniania well contains a round case, which is at least one segment, which includes, at m is re, one section of the throttle scallops, thus the supply flow to the segment made from the end face on the TV side, while it additionally contains in each segment, at least one section of the bracket scallops, grooves and grooves of the same type size, but the height and width, each input node is arranged to overlap the cylindrical stopper plugs with thread which is inserted through the camera body.

In a preferred embodiment, the implementation of Luggage contains from 1 to 5 of these segments. Each segment can contain from 1 to 10 sections throttle scallops for fine tuning the pressure differential between the reservoir and the team of the pipe. Mostly, but not necessarily, the height and width of the throttle scallops, grooves and grooves is 1 to 10 mm In most variants of realization of each partition segment contains two nodes of the input.

Usually in the chamber but the two longitudinal channel inlet flow for each segment. In some embodiments of each segment of the camera contains up to ten throttle and restrictive section with scallops, grooves and grooves of the same type size in height and width. The number of scallops and slots between the scallops along the rows of the throttle section can be identical or different. Predominantly restrictive section contains the, at least one or more parallel fragments. In restrictive section, at least one of the fragments contains no node of the input and is directly connected to the throttle section. Subsequent parts contain the nodes of the input for fine-tuning the hydraulic characteristics of the bounding section. These subsequent parallel fragments individually may contain one or more nodes of the input stream.

Also supply flow to the throttle and restrictive section can be implemented through the hole of the threaded connection in the camera body by twisting the cap from the cylindrical shutter.

Preferably before and/or after the throttle and restrictive sections can be installed valve. The resulting adaptive camera which is able to adapt to changes over time of the characteristics of the flow of liquid and/or gaseous phase. The valves can be adjusted to the required characteristics of the camera in General. This is achieved by changing the flow area of the valve seat and the mechanical rigidity of the Executive element of the shutter that provides the desired differential pressure valve to open or close for the required flow rate. The advantage of this adaptive camera is guaranteed by the presence of valves in the well-known floor is hereto.

The drawing shows a scan of the camera on the outside diameter. Thus the following notation is used: input channels 1, node 2 or the position of the stub with a cylindrical bolt and the threaded section of the throttle 3, the limiter section 4, a fragment of the limiter 5 and outlet openings in the collecting pipe 6.

The developed device operates as follows. From the side of the camera input channels, 1 stream approaches the nodes of the input 2. After the nodes in the input stream gets into the throttle section 3. Opening the input nodes of the throttle sections in different segments to achieve the desired configuration of the hydraulic characteristics of the camera in General. Stream, after passing the throttle section, enters the restrictive section of the segment 4. There is also depending on the number of open for passage of a stream of fragments 5 sets of hydraulic characteristics for limiting the gaseous phase of the camera in General. After the section of the limiter flow through the outlet 6 falls into the collecting pipe. The nodes of the input chamber open by replacing the plug with a smaller diameter cylindrical shutter. 'The nodes of the input stream in the design of the filter without the wire winding can be opened by twisting a stub. In this case, the stream will flow through the hole of the threaded connection in the case.

Work adaptive camera happens is as follows. During the descent all the valves are open. The flow of liquid and/or gas passes through the throttle section, open valve and into the collecting pipe. In case of exceeding the set value of the flow through the valve or increasing the pressure drop of the latter is closed. This changes the path of current flow through the chamber, and the flow goes to the next throttle section. The hydraulic resistance of the camera increases and, as a consequence, the overall consumption falls. If the flow rate again exceeds the required value, then closes the next valve, etc. to open all of the valves in the chamber it is possible to provide a pressure increase in the pipe or wellbore. Then reconfigures all valves under the changed conditions of production of the above-described method.

It is also possible the closing of all valves by increasing depression. This prevents inadvertent opening of the valve without applying an external pressure opening.

Using the developed device allows to increase oil recovery by up to 20%.

1. Adaptive throttle-restrictive camera filter system oceniania wells containing round case, which is at least one segment, which includes at least one section of the throttle scallops, thus the supply flow to the segment implemented then the CA on the TV side, characterized in that it further comprises a segment of at least one section of the bracket scallops, grooves and grooves of the same type size in height and width, each input node is arranged to overlap the cylindrical stopper plugs with thread which is inserted through the camera body.

2. The camera according to claim 1, characterized in that it contains from 1 to 5 segments.

3. The camera according to claim 1, characterized in that each segment contains at least one channel for supplying thread to the throttle and restrictive section.

4. The camera according to claim 1, characterized in that each of the throttle and restrictive section contains at least one node in the input.

5. The camera according to claim 5, characterized in that the height and width scallops, grooves and grooves is 1 to 10 mm

6. The camera according to claim 1, characterized in that each segment can contain from 1 to 10 throttle sections.

7. The camera according to claim 7, characterized in that the number of scallops and grooves between the rows of the throttle section of the same or different.

8. The camera according to claim 1, characterized in that the restrictive section contains at least one or more parallel slices.

9. The camera according to claim 9, characterized in that the bounding section, at least one fragment does not contain the nodes of the input stream.

10. The camera according to claim 9, characterized the eat, in restrictive section, consisting of two or more parallel fragments, the latter contain one or more nodes of the input configuration of the hydraulic characteristics of the bounding section.

11. The camera according to claim 1, characterized in that the inlet flow to the throttle and restrictive sections made through the hole of the threaded connection in the camera body.

12. The camera according to claim 1, characterized in that before and/or after the throttle and restrictive section of the installed valve.



 

Same patents:

FIELD: oil and gas industry.

SUBSTANCE: method involves lowering to the well of a pipe string with a cable, control devices in the form of electric valves, pressure and temperature measuring sensors and with one or several packers isolating the borehole space. Sensors are used, the information from which is supplied to a measuring unit installed on the well head. Signals for opening and closing of control devices are supplied via the cable from the wellhead control unit. The product is lifted to the surface by means of a pump via inter-tube space. The well is built with a horizontal section passing in the formation with different permeability zones. Packers are installed in the horizontal section of the well, thus separating the formation zones with different permeability. The inter-tube space is isolated with a plug, above which there arranged one above another are upper and lower control devices arranged in a vertical shaft and equipped with measuring sensors. Zones with equal or similar permeability are interconnected with each other by being grouped in two flows interconnected with the borehore space and the input of the upper control device or the inter-tube space and the input of the lower control device. Outputs of control devices are interconnected with the pump inlet, and the value of opening of control devices is derived with frequency separation via one cable, via which parameters are picked up from measuring sensors, as per the readings of which the value of opening of each of the control devices is determined. Each control device is made in the form of an electric motor with a reduction gear, which are arranged in the housing, the rotating shaft of which is connected through a screw-nut connection to a pusher and a valve having the possibility of tight interaction with a seat, below which there arranged is a shell with an inlet in the form of channels, in which a compensating chamber with elastic walls is arranged, which is filled with lubricating liquid and interconnected with inner space of the pusher and sealed space located above the pusher.

EFFECT: enlarging manufacturing capabilities in wells with zones of different permeability, and reducing costs.

2 cl, 4 dwg

FIELD: oil and gas industry.

SUBSTANCE: method lies in accumulation of liquid and gas in a well, cyclic carryover of accumulated liquid from the liner to tubing string and throwing of liquid column by gas. According to the invention associated gas is separated from liquid-gas mixture and directed to the upper part of gas-lift unit to gas burning unit. Air under high pressure is fed to the same unit in order to provide conditions for gas-air mix burning ensuring high-speed burning process accompanied by sharp increase of temperature and pressure. In result it provides opening of return valve in the lower part of tubing string and throwing of liquid column by gas being a combustion product. Thereafter cycle of gas separation from liquid-gas mixture and its burning in gas-air mix is repeated as far as liquid and gas enter through the service valve from annular space to the lower part of submerged gas-lift unit at receipt of a signal from the earth control station.

EFFECT: increase in efficiency, reduction of power consumption, control of production process and reduction of costs for well operation.

1 dwg

FIELD: oil and gas industry.

SUBSTANCE: method consists in movement of a housing of a continuous circulation tool to an adapter having a channel passing through it and intended for connection in a pipe string in the well and selective movement of drilling fluid between the housing and a side hole in the adapter; in addition, the continuous circulation tool includes a shutoff device, and actuation of a shutoff mechanism to introduce a shutoff element of the shutoff device through the side hole in the adapter for insulation of drilling fluid flow through at least one section of the channel. A system for carrying out well operations with continuous circulation of drilling fluid, which contains a continuous circulation tool interconnected with a tubular column of the well, which contains an adapter and is intended for selective shutoff of the drilling fluid flow to tubular column of the well, a pipe manipulating device near the adapter, which contains the following: a pipe wrench, pipe wrenches, a pipe wrench, a retaining wrench, a pipe wrench and a spinning wrench and a device for mechanised suspension and unscrewing of pipes.

EFFECT: maximum drilling speed.

34 cl, 27 dwg

FIELD: oil and gas industry.

SUBSTANCE: system and method for increasing a well flow rate are described in the application. The system includes processor (150) that processes commands contained in a software, which include command for monitoring during the specified period of time of an actual fluid flow rate from each productive zone (52B, 52b) of the well in compliance with the first tuning of devices for control of the flow rate and applying the analysis of the chain using a method of node potentials to a variety of input data chosen from the data of well sensors, data of surface sensors, one or more current positions of devices, for the purpose of setting one or more new settings, at which increase in the well flow rate will be provided.

EFFECT: increasing productive capacity of well.

18 cl, 6 dwg

FIELD: oil and gas industry.

SUBSTANCE: system includes several tubular elements located in each other with the channels directing the fluid flows from different formations of the well to different channels of tubular elements fixed in the casing pipe by means of packers. Channels are equipped with spool-type gates with control electric drives providing separate movement of fluid flows from different formations through different channels by means of a processor and a fluid parameter measurement sensor installed in each channel and functionally connected to the automatic control processor of the valve in compliance with the information received from the sensor, and further selective mixing of flows in the area of the casing pipe. Tubular elements are fixed in the casing pipe with upper packer, and at their inlets, they are connected to the coupling directing different flows via different channels from different formations, which is connected via a central channel by means of the shank to the extracting device of the product from bottom formation of the well, which is fixed in the casing pipe with lower packer. Unit of separate supply and accounting is connected via a branch pipe to the electric drive of the submersible centrifugal pump, in which a communication cable is placed to control the valves from the electric feed and control cable, which attaches the pump electric drive to the well electric feed and control station.

EFFECT: increasing operating efficiency of the well formations.

3 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: method includes blocking of a perforation interval by means of injection of a blocking liquid and its pushing with a killing fluid to a bottomhole and to a bottomhole area of a bed with simultaneous monitoring of pressure at a well head, gas relief and process settling. At the same time, prior to injection of the blocking fluid, a sand screen is formed by injection of a pulp of quartz sand with fraction of 0.6-1.2 mm in a carrier fluid in two portions with a flow rate of a carrier fluid, the value of which does not exceed the maximum permissible value, defined according to the formula. At the same time the volume of the quartz sand in the first portion of the pulp is calculated in accordance with the formula with further process settling of the well for the time determined according to the formula after injection of the first pulp portion. The volume of the quartz sand in the second pulp portion is taken as equal to the volume of suffosion channels produced in the sand screen. The blocking fluid is a certain composition. The blocking fluid volume is previously calculated according to the formula. Besides, at the moment of completion of blocking fluid pushing, hydrodynamic pressure is determined in a tubing string. Afterwards the process settling of the well is carried out. Further injection of the killing fluid into the well is carried out along the tubing string until it appears at the well head. At the same time the well head pressure is controlled in the annular space of the well by means of gas and blocking fluid relief, providing for pressure at the inlet to the tubing string as permanent and equal to the predetermined hydrodynamic pressure.

EFFECT: improved efficiency of gas well killing.

1 tbl

FIELD: oil and gas industry.

SUBSTANCE: design of low-angle and horizontal wells includes a technical string, an operating string and a lift string. The operating string is cemented above the productive formation roof. The operating string in the productive formation is divided into sections with casing packers, and sections include filter sections and sections of solid pipes. The lift string in the productive formation is equipped with operating packers, installed inside the sections of solid pipes of the operating string and groups of controlled valves equipped with calibrated inlet side holes arranged inside filter sections. A seat nipple is installed at the end of the lift string. Controlled valves and the nipple are made as capable of interaction with control devices lowered inside a lift string.

EFFECT: possibility to control an inflow from isolated sections of a low-angle or horizontal well shaft or their total selective water isolation.

3 dwg

FIELD: oil and gas industry.

SUBSTANCE: development method of heavy oil or bitumen deposit with control of well product extraction involves construction of upper injection and lower production wells with horizontal sections located one above another. At construction of wells their horizontal sections are equipped with filters installed opposite productive formation zones. Inside filter with non-perforated interval in production well there arranged is a shank provided with inlet holes dividing the filter into extraction zones. Besides, shank is equipped on the inner side with a stock with side channels. Inner space of stock is interconnected with inlet of pump lowered to production well on the tubing string with possibility of longitudinal movement of the tubing string together with pump and stock in the shank. Heat carrier is pumped through horizontal injection well with warming-up of the formation by creating the steam chamber, and product is extracted through horizontal production well. Thermograms of steam chamber are taken, the chamber's warm-up state is analysed for uniform heating and available temperature peaks, and considering the obtained thermograms, uniform heating of steam chamber is performed. Before the tubing is lowered to production well, first, stock is lowered with a shank concentrically arranged on it and fixed in transport position with a shear screw. Besides, on the outer side of the shank lower end there installed is heat-resistant packer; after the stock is lowered to production well, lower end of tubing is put on its upper end. Tubing is equipped with a pump. Tubing is lowered to production well till the packer is arranged at non-perforated interval of production well filter; after that, packer is installed by dividing the filter of production well into two extraction zones - initial and final. Uniform heating of steam chamber is performed by supplying the heat carrier through injection well. Penetration of heat carrier and/or formation water to the pump inlet is avoided by controlling the product extraction to the pump inlet from the initial extraction zone. Besides, product extraction volume is reduced in the initial extraction zone where temperature peaks occur. For that purpose, inlet shank holes corresponding to the initial extraction zone are made with reduction of carrying capacity from face to head, and side channels of stock are provided with possibility of alternating interaction with one of inlet shank hole in the initial extraction zone. This is performed by restricted longitudinal movement of pipe string together with pump and stock relative to shank by increasing or reducing the number of connection pipes on upper end of pipe string depending on the distance between inlet holes of the shank. Pipe string is fixed on the head of production well in the required position by means of a face plate on a supporting flange, and shank hole corresponding to the final extraction zone is made in the form of an open stock end.

EFFECT: improving the control of product extraction volume from extraction zones; simpler erection and lower metal consumption on the design.

3 dwg

FIELD: oil and gas industry.

SUBSTANCE: method of fluid extraction from the well is performed in the following way: the first adjustment at least of the first well equipment for fluid production is performed; the first set of input parameters is chosen, which includes at least one parameter referring to serviceability degree at least of one second well equipment and sets of parameters chosen from the group including the data referring to efficiency, pressure, temperature, presence of the chosen reagent, content of water, content of sand and flow rate of injected chemical reagents. The first set of parameters is used to be entered to the computer model, and the second adjustment at least of one first well equipment is performed, which will provide at least extension at least of one second well equipment or increase in completed well flow rate. Also, control system of operation of electric submersible pump is proposed, which contains information storage data base relating to operating range of submersible pump, and processor for adjustment at least of one first well equipment, which has the possibility of using at least one measured operating parameter of submersible pump and information stored in the data base.

EFFECT: invention allows performing the monitoring of well shaft state and serviceability degree of various equipment and taking actions, which will provide increased or optimum production of hydrocarbons from the well.

25 cl, 4 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to production of natural gas ad may be used in methane-coal well development. Proposed method comprises perforation of operation string in interval of production bed and its hydraulic fracturing. Thereafter, operation string is flushed. Settled fluid level allows defining initial counter pressure on productive coal bed. Production tubing with borehole pump is lowered into flow tubing, the pump being located under perforation interval. Well head is sealed. Borehole pump is used to reduce fluid level in well annuity space to below perforation interval together with injection of buffer gas therein at initial counter pressure on the bed. Thereafter, feed of buffer gas is interrupted. Said fluid level in annuity space is maintained by means of borehole pump. Inflow of bed fluid is caused by releasing excess pressure of buffer gas from annuity space in control over variation in gas quantitative and/or qualitative composition at well head. Change in released buffer gas composition allows defining the beginning of coal methane from productive bed. Now, rate of buffer gas pressure release is decreased.

EFFECT: higher efficiency of well development.

4 cl

FIELD: mining industry.

SUBSTANCE: invention can be used in case of gas-lift operation of wells equipped by free piston-type installations. Invention envisages stopping well, connecting tube space and annular space in wellhead, recording bottom zone and wellhead pressures in tube and annular spaces, and computing well operation parameters using inflow curve plotted according to differences of bottom zone and wellhead pressures. Volume of produced fluid is found from potential output of formation and from condition of output of free piston. When comparing these volumes, parameters of well are computed in the base of minimum volume value.

EFFECT: optimized well operation.

2 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: foam-forming compound for shutting wells contains hydrocarbon liquid, mixture of surfactants, one of components thereof is water solution of lignosulphonate reagent of 25% concentration, herbal filling agent and 20% water solution of calcium chloride, as lignosulphonate agent reagent it contains powder-like technical lignosulphonate, and as other component of surfactant mixture - hexamethylentetramine, and as herbal filling agent - peat or grass flour with following ratio of components in percents of mass: hydrocarbon liquid 12-14, said water solution of technical powder-like lignosulphonate 17-21, hexamethylentetramine 0.17-0.63, peat or grass flour 3-6, said calcium chloride solution - the rest, while relation of mass portions between said water solution of technical powder-like lignosulphonate and hexamethylentetramine is 1: 0.01-0.03 respectively, as grass flour it contains pulverized herbal waste of grain bread production or similar substance.

EFFECT: higher efficiency.

2 cl, 18 ex, 1 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: compound includes water and inhibiting salt, as inhibiting salt contains processed electrolyte - side product during production of magnesium via electrolysis from carnallite, and additionally as reducer of filtering and thickener - carbooximethylcellulose polymer, and as colmatation agent - magnesium oxide with following relation of components in percents of mass: processed electrolyte - side product of magnesium production via electrolysis from carnallite 10.0-15.0, carbooximethylcellulose 2.5-3.0; magnesium oxide 1.0-2.0, water 80.0-86.5.

EFFECT: higher efficiency.

3 tbl

FIELD: oil and gas producing industry, in particular composition for killing of well.

SUBSTANCE: claimed polysaccharide gel contains sweet or mineralized water, polysaccharide gelling agent, boron cross-linking agent, diethanolamine, quaternary ammonium compounds, and mixture of non-ionic and anionic surfactant (complex surfactant). Mixture of water soluble oxyethilated alkylphenols and their sulphoethoxylates in form of sodium salts or salts with triethanolamine is used as complex surfactant in amount of 0.1-0.5 kg on 1000 l of water being the gel base. Polysaccharide gel is obtained by dissolution and hydration of polysaccharide gelling agent in sweet or mineralized water (preferably monovalent ion solution) followed by treatment of obtained polysaccharide solution with aqueous solution including boron cross-linking agent, diethanolamine, quaternary ammonium compounds, and complex surfactant.

EFFECT: well killing composition of improved quality.

2 cl, 6 ex, 1 tbl

FIELD: oil extractive industry.

SUBSTANCE: method includes mounting compressor pump in such a way, that input aperture of tail piece was positioned below bed sole. Prior to that water cone in face-adjacent zone is destroyed by draining water through tail piece, connected to lower suck-in valve of compressor pump cylinder, and along behind-pipe space through side suck-in valve of compressor pump cylinder. In case of increase of hydrocarbon contained in drained liquid beginning of water cone destruction is assumed. Draining is continued until destruction of emulsion in water cone, formed in non-homogenous porous environment of bed at limits of hydrocarbon-water and water-hydrocarbon, separation of water and hydrocarbon streams and bringing current water-hydrocarbon contact to initial position. Then during extraction water is drained through tail piece, and hydrocarbon - along behind-pipe space.

EFFECT: higher yield.

3 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: method includes preparation of technological liquid - water solution of sylvinite ore mixture with chlorine calcium by solving a mixture of components in hot fresh technical water, drained from oil and water preparation plants or bed water. During solution of sylvinite ore mixture with chlorine calcium in bed water the latter is drained from the well at temperature 60-90°C. Technological liquid is produced with solution density 1.23-1.37 t/m3. Then prepared technological liquid is fed into well shaft a bit lower, oppositely to zone and above ceiling of productive bed with forming of hydraulic column above the latter. Then well shaft to the mouth is filled with water. Value of technological liquid hydraulic column of high density on basis of said mixture, fed into well shaft above ceiling of productive column of technological liquid is taken in amount, necessary and enough from well stopping conditions.

EFFECT: higher efficiency.

6 cl, 1 ex

FIELD: oil and gas production.

SUBSTANCE: water-based composition that can be used for killing of well during pullout of hole and well remedial work as well as for temporary abandonment of well contains, wt %: carboxymethylcellulose3.5-4.5, sodium hydroxide1.5-2.0, copper sulfate 0.3-0.4, and methanol 4.0-16.0.

EFFECT: improved rheological properties of composition and increased lifetime of formed gels.

1 tbl

FIELD: oil and gas industry.

SUBSTANCE: method includes serial pumping into well of buffer, blocking and pressing liquid, blocking liquid contains hydrocarbon base, acyclic acid, caustic soda and mineral filler with following relation of components in percents of mass: hydrocarbon base 41-72, acyclic acid 6.1-14.4, caustic soda 4.9-13.0, mineral filler the rest. Hydrocarbon base of blocking liquid is oil or oil processing products. As mineral filler blocking liquid has calcium carbonate with diameter of particles no less than 2 micrometers.

EFFECT: higher efficiency, simplified maintenance, simplified construction.

3 cl, 1 ex

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: 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

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