RU2395675C1 - Method of ultraviscous oil recovery - Google Patents

Abstract

FIELD: oil and gas production.

SUBSTANCE: ultraviscous oil recovery process requires straight well construction to total depth, of modular annuli with dirt removal from a flat internal surface. A butt of the first annulus has a cutting ring. Horizontal wells are drilled in the form of perforated pipe supplied with filters, centering skids and nozzle flat ends. A heat-carrier is supplied in a bed through an upper collector, remote gate valves, perforated pipes and horizontal surface casing chambers. Production collection in an underground reservoir is carried out through the perforated pipes and horizontal surface casing chambers. Production pumping-out is ensured by any conventional pumps effectively operated in these conditions. Height of rows of the horizontal wells and their number are determined by bed formation thickness and an accepted recovery procedure. Prior to indentation of the perforated pipe, a sealing elastic removable membrane is placed in its central tube. The heat-carrier is supplied in the horizontal wells by the upper collectors and remote gate valves through a number of the perforated pipes and/or the horizontal surface casing chambers in occasionally varied combination with using the remote gate valves according to the operating conditions.

EFFECT: more effective ultraviscous oil recovery.

7 cl, 8 dwg

Description

The invention relates to the field of the oil industry, and more particularly, to methods for producing hydrocarbons by borehole methods with opening the formation by horizontal channels with thermal effect on it and can be used for the production of ultra-viscous oil and natural bitumen.

A known method of developing deposits of highly viscous oils and bitumen (RF patent No. 22600600, ЕВВ 43/24, publ. Bull. No. 4 of 02/10/2005), including the construction of a two-well well, the horizontal perforated part of which passes through the reservoir, and wellhead sections connect a ground section in the form of an arcuate pipeline with the formation of a closed channel, inside which an additional pipe string is placed, inside which a closed traction element with pistons is placed, driven by a ground drive. The method is based on the task of increasing the efficiency of the system by implementing a process of continuous deep pumping oil displacement in an equal bore closed hydraulic channel.

Deposits of high viscosity oils and bitumen, occurring at shallow depths, are characterized by low reservoir pressures, high viscosity and low mobility of products in the reservoir. To implement the proposed method, it is necessary to build a complex, expensive and one-time technical structure, which consists in constructing a well along a predetermined closed path and a cumbersome ground part for a drive and a product reception system. Without the use of additional technological methods, the products will not flow from the reservoir into the perforated part of the well in sufficient quantities. Under these conditions, the effectiveness of the method cannot be high.

The closest is the method of oil production by underground horizontal wells (RF patent No. 2060377, ЕВВ 43/24, 7/04, 21/00, publ. Bull. No. 14 dated 05/20/1996) using thermal action on the reservoir, including the construction of a vertical shaft shaft, closed with a sealed top, revealing the reservoir at its full capacity, the construction of an underground working chamber isolated from the mine atmosphere, drilling from the surface of the horizontal injection and production wells in two tiers, the mouth of which is They can be found in an underground working chamber, pumping coolant from the surface of the reservoir through injection wells through the steam pipe, extracting oil from the producing reservoir into the underground working chamber, extracting it into a tank in the form of lifting wells and pumping airlift lifts to the surface.

The disadvantage of this method is that it is not always economically feasible to build technically complex, expensive, and one-time structures at deposits of extra-viscous oils and natural bitumen located under cultivated lands and settlements at depths of 40-250 meters, having small reservoir thicknesses, reservoir pressures and reserves . Construction and installation works using complex metal structures for a working underground chamber with a diameter of 20-30 meters, a large number of reinforced concrete, casing pipes, tubing will increase the cost of construction. In addition, when pumping products with airlift elevators, the conditions for the formation of stable emulsions are not excluded, which will require additional costs for its further preparation. Drilling the formation with horizontal wells from the surface using casing and raising the cuttings to the surface due to circulation of the flushing fluid will lead to contamination of the formation zone and complicate the development of these wells subsequently. It is impossible to apply flexible technologies for stimulating the formation without the readjustment of underground equipment. After the reserves are fully depleted, it is problematic to dispose of the well in compliance with environmental requirements. All this reduces the effectiveness of the well-known technical proposals.

The technical task of the proposal is to increase the efficiency of extra-viscous oil production by reducing the agricultural land allotted for these purposes, the construction time of the well and cost, the possibility of applying effective technologies for stimulating the formation through horizontal wells without changing equipment, increasing production rates, reducing the total number of pumps, research, maintenance and repair of horizontal wells and pumps using surface equipment, preliminary preparation ki of products in an underground tank using effective methods and using high-performance modern pumps to pump them.

The problem is solved by a method of producing extra-viscous oil, including the construction of a vertical well, opening the formation from a vertical well with horizontal wells, supplying coolant to the formation, collecting products into an underground tank and pumping it to the surface.

New is that they build a vertical well to the design depth from block cylindrical rings with technological holes pre-fabricated on them and embedded elements with the control installation and dismantling of the necessary devices, connecting them together rigidly and tightly on the surface and growing from top to bottom through the guide conductor under weight, with simultaneous excavation of the rock from the end internal area, and the lower end of the first cylindrical ring is equipped with a ring knife, and technological the holes of the protruding protruding devices are temporarily sealed, the annular spaces above the roof and below the bottom of the formation are sealed, the reservoir is opened from a vertical well according to the design by horizontal wells in the form of perforated pipes equipped with filters, centralizers and end tips with nozzles, by pressing them through the central guide channels of horizontal conductors tightly connected to the walls of a vertical well and equipped with filters and chambers connected through a distance but the controlled valves, the upper and lower headers, respectively, with the steam line and the underground tank, which are also connected through remotely controlled valves, the upper and lower headers, respectively, with the steam pipe and the underground tank, and their central channels are closed with equal passage valves, the coolant is supplied to the reservoir through the upper collector , remotely controlled valves, perforated pipes and chambers of horizontal conductors with the remaining valves closed, collecting products in an underground tank The bone is carried out through perforated pipes and chambers of horizontal conductors, remotely controlled valves and the lower collector with the remaining valves closed, and any known pumps capable of operating effectively in these conditions are used to pump products.

What is new is that the vertical distance between the rows of horizontal wells and their number is determined depending on the reservoir thickness and the adopted production technology, each row well is connected through a remotely controlled valve and an upper manifold with a steam line, and through a remotely controlled valve and a lower collector, with underground capacity, which can be either injection or mining.

It is new that before pressing the perforated pipe into the formation, a sealing elastic removable shell is placed in its central channel, during the pressing process, a hot hydrocarbon-based solvent is fed into it, and after pressing the annular end section of the horizontal conductor is sealed.

What is new is that the coolant is supplied to horizontal wells using upper reservoirs and remotely controlled valves through part of the perforated pipes and / or horizontal conductors chambers, periodically changing their combination with remotely controlled valves according to the technological mode of operation, while other perforated pipes and / or the horizontal conductor chambers are isolated or communicated with an underground tank via remotely controlled valves and lower headers.

New is that the production of the reservoir from horizontal wells enters the underground reservoir through remotely controlled valves and lower collectors from part of the perforated pipes and / or chambers of horizontal conductors, periodically changing their combination using remotely controlled valves according to the technological mode of operation, while other perforated pipes and / or chambers of horizontal conductors are insulated or communicated with a steam line through remotely controlled valves and collectors.

New is the fact that during the operation of horizontal wells, geophysical research, maintenance and repair are performed using surface equipment with a flexible sleeve with the necessary set of instruments and tools through sealed central channels, with the simultaneous collection of products through remotely controlled valves and the lower collector in an underground tank.

New is that pumps for pumping products are placed in an additional sealed vertical well, equipped with a filter in the perforated zone of the underground tank and connected to a light trapping system.

Figure 1 shows a diagram of the construction of a vertical well.

In Fig.2 - a fragment of a cylindrical reinforced concrete ring with a ring knife along the leader A of Fig.1.

Figure 3 is a fragment of the connection of cylindrical reinforced concrete rings with embedded elements along leader B of figure 1.

Figure 4 shows the general arrangement of equipment in the well (elements of other horizontal wells in the background between the collectors are not conventionally shown).

Figure 5 is a section bb in figure 4.

6 is a diagram of the construction of a horizontal well.

Fig.7 is a fragment of a perforated pipe horizontally wells with a filter, an elastic removable shell and a tip on the leader G Fig.6.

In Fig.8 is a fragment of the collector of the tank cleaning system on callout D of Fig.4.

The method of production of super-viscous oil (hereinafter oil) is as follows. According to the project, all equipment for well construction is manufactured and preliminary assembly and disassembly of the main structural elements on the surface is carried out. For casing a vertical well, cylindrical reinforced concrete rings (rings) are used that are able to work in these conditions. Technological holes (not shown) on the rings of the removed protruding devices are temporarily sealed. For a vertical well, a guide conductor 1 is built (Fig. 1) with a through diameter for rings 2 and a height greater than the diameter of the vertical well. The diameter of the rings is determined by the design, and it can be 2-6 meters. A lifting device (not shown) introduces the first ring 2 with an annular knife 3 (figure 2) into the guide conductor 1 (figure 1), and the height of the ring 2 is greater than the height of the conductor 1. Next, remove the rock from the inner end area of the ring 2, for example, a grab (not shown), which under its own weight begins to fall down. Then the next ring 2 is installed, having previously placed the sealing compound 4 (Fig. 3) in the joint of their interface and rigidly connected to each other, for example, by welding embedded elements 5 around the perimeter. As a sealing composition, cement mortar can be used. In the same way, the subsequent rings 2 are increased from top to bottom through the conductor 1 to the design depth of the vertical well 6 (Fig. 1). To reduce the friction of rings 2 on the rock, known methods and substances are used, for example, a thixotron solution based on special clays. Then, the annular spaces are cemented above the roof 7 (Fig. 4) and below the sole 8 of the formation 9. The lower part of the vertical well is closed at the level of the sole 8 of the formation 9 with a horizontal sealed heat-insulated cover 10 (cover), forming a container 11 for collecting products. In the cover 9 provide a hermetically sealed entrance for mounting and strapping equipment elements in the tank 11 (not shown). The top vertical well is closed with a sealed chamber 12 with floor 13, in which a working elevator, ventilation system and other necessary equipment (not shown) are subsequently placed. An additional sealed well 14 is built with a recess 15 from the bottom of the vertical well and a perforated section 16 in the area of the underground tank 11. In the tank 11, a perforated manifold 17 with a pipe 18 is mounted, which is connected to the steam line 20 through a remote-controlled valve 19 (valve).

The number of required horizontal wells 21 is determined by the project, taking into account the thickness of the reservoir and the adopted production technology. Their number can be more than 16 in one section and several rows in height. The construction of horizontal wells 21 is illustrated by the example of the construction of one of them. Open (remove the plug) a technological hole (not shown) on the wall of the ring 2 and horizontally drill a layer 9 to a depth of 20 meters by known means, such as a screw. A horizontal conductor 23 is placed in the formed cavity 22, including a central guide channel 24 in the form of a pipe, connected at the ends 25 and 26 to the outer shell 27 in the form of a larger perforated pipe with a sand filter 28 (filter), forming an annular chamber 29 (camera), moreover, at the end 25 holes are made (not shown). The shell 27 is hermetically connected to the wall of the vertical well 6. Next, the chamber 29 through the valves 19 is connected to the upper 30 and lower 31 collectors, which are respectively connected with the steam pipe 20 and the tank 11. A perforated pipe 33 is introduced into the guide channel 24 of the horizontal conductor 21 through the pushing device 32 (Fig.6), equipped with filters 34, centralizers 35 and an end tip 36 with nozzles 37, placing a sealing elastic removable shell 39 (shell) in its central channel 38, which covers its perforated sections in the process of pushing into the reservoir 9. To reduce the resistance when pushing the perforated pipe 33 into it, a hot hydrocarbon-based solvent (solvent) is supplied through the flexible sleeve 40 of the ground equipment (not shown), which, emerging from the nozzles 37 (Fig. 7 ) tip 36, heats the contacting rock of the formation 9 (sand impregnated with super-viscous oil) and reduces its viscosity, creating the effect of lubrication. In this case, the shell 39, under the action of solvent pressure, seals the perforated sections of the pipe 33. Subsequently, the solvent passes through the chamber 29 (Fig. 6) of the conductor 21, the valve 19, the manifold 31 and the pipe 42 into the reservoir 11. The length of the indentation of the pipes 33 into the reservoir 9 should maximum technical capabilities used for this equipment and can be 700 meters or more, and their perforated sections with filters 34 - starting from a distance of more than 25 meters from the well. The diameters of the pipes 33 and the sheath 27 of the horizontal conductor 21 are determined by calculation, and they can be of the order of 60 and 100 mm, respectively. After reaching the design length of the horizontal well 21, the casing 39 is removed or partially left, the interface with the conductor 23 is sealed (Fig. 4), the central channel 38 is connected through valves 19 to the upper 30 and lower 31 manifolds and closed by an equal passage valve 43. During its further operation by moving shell 39, you can adjust the steam supply to different sections of the reservoir 9 or to select products from its various sections. A shell is made of an elastic material, for example, silicone rubber, which can operate at temperatures of 300 ° C. Section 44 after the horizontal conductor is sealed in a known manner, for example, cemented. This is necessary so that the steam injected into the pipes 33 does not break through to the vertical well 6. The pipe 33 and the horizontal conductor 23 can be both composite and solid (flexible), and their material is metal or non-metal, capable of working in the reservoir. The coupling of the output ends of the pipes 33 with the conductor 23 and the wall of the well is sealed by known methods. The Central channel 38 of the pipe 33 through the valves 19 are connected to the upper 30 and lower 31 collectors, which communicate respectively with the steam pipe 20 and the capacity 11. In the same way build the remaining horizontal wells.

Armatures of the mouths of horizontal wells 21, manifolds 30 and 31, valves 19 and 43, pressurized chamber 12 and other pipelines are thermally insulated (not shown). Installation of equipment in a vertical well 6 is carried out using a working elevator (not shown) and compliance with safety regulations. Workers are provided with personal protective equipment to work in these conditions.

Geophysical exploration, maintenance and repair of horizontal wells 21 is performed using known surface equipment with a flexible sleeve with the necessary set of instruments and tools, with the simultaneous collection of products through valves 19 and the lower manifold 31 in the underground tank 11.

The pump 45 for pumping oil is selected for each specific case, taking into account its viscosity, temperature, the presence of solids, etc. Can be used sucker-rod pumping units, submersible electric centrifugal pumping units, screw pumps, etc. Installation, maintenance and dismantling of these pumps is carried out in an additional well 14 from the surface using well-known techniques and equipment. The internal cavity of the borehole 14 is communicated through a pipe 46 with a trapping system for light fractions (not shown). For pumping from the bottom of the water tank can use additional pumps. The mouth of the additional well 14 is thermally insulated and can be closed with a removable chamber 47.

The technology of steam gravity drainage is used for oil production with superheated steam being injected into the formation with a temperature of about 250 ° C. The essence of the technology lies in the fact that the reservoir is heated with superheated steam to reduce the viscosity of the product and bring it into a fluid state. The movement of steam into the reservoir 9 and products into the underground reservoir 11 is generally illustrated by the example of the operation of one horizontal well 21. Through the steam pipe 20, the upper manifold 30, valves 19, the chamber 29 and the well 21, the steam enters the reservoir 9 and heats it. In this case, all other valves are closed. The collection of products in the underground tank 11 is carried out through the well 21, the chamber 29, the gate valve 19 and the manifold 31. In this case, all other valves are closed. Other options are possible. The steam from the collector 30, the valve 19 and the chamber 29 enters the reservoir 9, and the products from the well 21, the valve 19 and the collector 31 into the reservoir 11. At the same time, all other valves are closed. Steam from the collector 30, the valve 19 and the well 21 enters the reservoir 9, and the products from the chamber 29, the valve 19 and the collector 31 into the reservoir 11. In this case, all other valves are closed.

The joint work of all horizontal wells is as follows. Steam is supplied to the horizontal wells 21 using the upper manifolds 30 and valves 19 through a part of the perforated pipes 33 and / or chambers 29 of the horizontal conductors 23, periodically changing their combination with valves 19 according to the technological mode of production, while other perforated pipes 33 and / or chambers 29 of horizontal conductors 23 isolate or through the lower collectors 31 and valves 19 communicate with the reservoir 11. The formation 9 from horizontal wells 21 enters the reservoir 11 through the valves 19 and the lower manifolds 31 of parts of the perforated pipes 33 and / or chambers 29 of the horizontal conductors 23, periodically changing their combination with valves 19 according to the production process, while other perforated pipes 33 and / or chambers 29 of the horizontal conductors 23 are isolated or communicate with the valves 19 and collectors 30 steam line 20.

At the first stage of operation, the steam deposits pump the estimated time through the steam line 20, the upper headers 30 with the upper valves open 19 to all horizontal wells 21 for a more complete heating of the reservoir 9. At this time, the lower valves 19, communicating them through the lower headers 31 with a capacity of 11, closed. After a sufficient warming up of the formation 9, the lower valves 19 are opened, communicating the chambers 29 through the collector 31 with a capacity of 11, and the steam supply to the pipes 33 is continued. In the gravitational mode and under the influence of reservoir pressure, the product in the form of oil with water enters through the filters 28, chambers 29 and the collector 31 into the reservoir 11. In the reservoir 11, the oil floats up in the water, the mechanical impurities fall down, and the light fractions through the cavity of the additional well 14 and the pipeline 47 enters the capture system (not shown), i.e. the primary stage of product preparation takes place. To accelerate this process, known methods and chemicals can be used. Depending on the applied technological mode of reservoir operation, horizontal wells in horizontal section and vertical rows can be either steam injection or production. For example, steam is pumped into the upper row of all wells (or into a part of them), and products are produced from the bottom row of all wells (or from a part). Depending on the adopted technology of reservoir operation, there may be any options for the joint operation of horizontal wells. To intensify production, the use of chemicals and solvents is possible. From the tank 11, the product enters an additional well 14, and it is pumped to the surface by pumps 45. An anti-sand filter can be installed in the perforated part 16 of the additional well 14.

To clean the tank 11 through the steam pipe 20, the collector 30, the valve 19, the pipe 18, steam is supplied to the collector 17, which, leaving the perforated holes 48 (Fig. 8), mixes mechanical impurities with water, forming a pulp that is pumped to the surface by the pump.

The equipment is carried out in explosion-proof quick-assembled modular design, equipped with safety, control and video surveillance devices.

Technological processes are controlled by the operator from the day surface. After the full development of the reservoir, the removable equipment of the well is dismantled, the formation zone is sealed, if necessary, it is washed and used for other purposes or filled up. In all cases, ensure environmental requirements.

The technical and economic advantage of the proposed method for producing extra-viscous oil is as follows. The manufacture of structural blocks and elements of vertical and horizontal wells according to the project on the surface and their preliminary assembly disassembly reduces the time, cost of further construction and improves its quality. Significantly reduced the area allotted for these purposes agricultural land. A simple scheme for constructing a vertical well using a conductor to guide the cylindrical rings when they grow from top to bottom, rigidly connecting and sealing their end joints on the surface, using their own weight on the annular knife and known methods to reduce the friction of the rings against the rock, as well as using a grab to excavate the rock or other effective technologies simplify construction. The construction of horizontal wells by indentation through guides of the conductors without rock excavation, the supply of a hot hydrocarbon-based solvent to reduce resistances, the ability to control the elastic supply of steam to its various sections or the selection of products from its various sections, as well as the rational use of wells for flexible effective production technologies without readjustment of equipment and a significant increase in flow rate also reduce the cost of construction and increase the efficiency of ciency of production. Installation and maintenance of pumps from the surface using well-known techniques and equipment, as in conventional wells, their operation in more favorable conditions than, for example, in horizontal wells, reduce operating costs. It becomes possible to efficiently warm the formation with the least heat loss of the injected steam, to collect products in an underground tank from a large area where it is being prepared for the first time, and to remove light fractions into the collection system. The total number of pumping equipment used is reduced, and it becomes possible to use high-performance efficient pumps. The method allows you to open a productive formation with minimal impact on it, to apply, depending on the stage of development of the field, various technological methods of influencing the formation without changing equipment and to conduct rational selection of products from different sections of the formation. The fact that horizontal, additional wells and annular chambers of horizontal conductors are equipped with sand filters that exclude the removal of mechanical impurities, the underground tank is connected with a trapping system for light fractions, and the initial preparation of products takes place underground using known effective methods to accelerate this process and conditions for the formation of stable emulsions during its pumping, reduces the cost of its general preparation on the surface, which in some cases can reach Up to 60% of the total production costs. Geophysical exploration, maintenance and repair of horizontal wells is performed using known surface equipment with a flexible sleeve. The control of the technological process of oil production is carried out remotely from the surface according to a given program and in automatic mode. Safety and environmental issues are being addressed.

We give some estimated parameters for the production of extra-viscous oil by the proposed method. Initial data: length of horizontal wells - 700 + 700 m, reservoir thickness - 20 m, oil saturation - 10% (can be much more), recovery - 90%, well works 365 days a year, average oil flow rate, when applying the steam-gravity mode the impact on the formation of existing double-well wells at the Ashalchinskoye field of super-viscous oil - (15-20) tons / day (a horizontal well was laid about 300 m along the formation), oil density - 0.9 t / m ³ (may be more), the number of horizontal wells - 2 rows × 16 wells. = 32 wells (depending on the adopted production technology, the number of wells can be significantly larger, and part of the wells can be injection), the price of oil on the market is 4000 rubles / ton (tentatively, for assessment).

The amount of oil that can be extracted from the reservoir covered by the well:

Q = 3.14 × 700 × 700 × 20 × 0.1 × 0.9 × 0.9 = 2492532 t (oil inflow from the border zones along the perimeter is not taken into account).

Amount of total oil sales:

Exp. = 2492532 × 4000 = 9970128000 rub.

The daily production rate of a vertical well in bitumen is the sum of the daily production rates of horizontal wells. We believe that with an increase in their horizontal sections in the reservoir, the flow rate will more than double. There is evidence that in Canada and Venezuela from horizontal wells with a length of 500-700 m produce highly viscous products of about 150 tons / day. We accept a daily production rate of a producing horizontal well of 75 tons / day. Then:

Lack = 75 × 16 = 1200 t / day (we believe that half of the wells are injection wells).

Annual production:

Comp. = 1200 × 365 = 438000 t.

Annual oil sales revenue:

Dg. = 438000 × 4000 = 1752000000 rub.

Number of years of well operation:

Nlet. = 2492532: 438000 = 5.7 years.

Three wells, occupying small land on the surface, will ensure the production of more than 1.3 million tons of extra-viscous oil per year.

After developing oil reserves, a well can be used as an underground reservoir for other purposes (for storing oil, water, industrial waste, fertilizers, etc.).

Thus, the application of the proposed technical solution increases the efficiency of extra-viscous oil production.

Claims (7)

1. A method of producing extra-viscous oil, including the construction of a vertical well, opening a formation from a vertical well along its perimeter with horizontal wells, supplying coolant to the formation, collecting products into an underground tank and pumping it to a surface, characterized in that they build a vertical well to the design depth from block cylindrical rings, with technological holes prefabricated on them and embedded elements, with control installation and dismantling of the necessary devices, connecting them between the wallpaper is rigidly and tightly on the surface and growing from top to bottom through the guide conductor under weight, with simultaneous excavation of the rock from the end internal area, the lower end of the first cylindrical ring being provided with a ring knife, and the technological holes of the removed protruding devices are temporarily sealed, the annular spaces above the roof and below the soles of the formation are sealed, the formation is opened from a vertical well, according to the design, horizontal wells in the form of perforated pipes equipped with filters, centralizers and end tips with nozzles by pressing them through the central guide channels of horizontal conductors hermetically connected to the walls of a vertical well and equipped with filters and chambers connected through remotely controlled valves, upper and lower headers, respectively, to the steam line and underground capacity, which are also connected remotely controlled valves, upper and lower headers, respectively, with a steam line and underground capacity, and their central channels with They cover it with equal-flow valves, the coolant is supplied to the reservoir through the upper collector, remote-controlled valves, perforated pipes and chambers of horizontal conductors with the remaining valves closed, the products are collected into the underground tank through perforated pipes and cameras of horizontal conductors, remotely controlled valves and the lower collector with closed other valves, and for pumping products use any known pumps that can work effectively in these conditions . 2. The method according to claim 1, characterized in that the distances between the rows of horizontal wells vertically and their number is determined depending on the thickness of the formation and the adopted production technology, each well of the series is connected through a remotely controlled valve and the upper manifold to the steam pipe, and remotely controlled gate valve and lower manifold - with an underground tank, which can be either discharge or producing. 3. The method according to claim 1, characterized in that before pressing the perforated pipe into the formation, a sealing elastic removable shell is placed in its central channel, a hot hydrocarbon-based solvent is fed into it during pressing, and after pressing the annular end section of the horizontal conductor is sealed. 4. The method according to claim 1, characterized in that the coolant is supplied to horizontal wells using upper headers and remotely controlled valves through part of the perforated pipes and / or chambers of the horizontal conductors, periodically changing their combination using remotely controlled valves according to the production technology while other perforated pipes and / or chambers of horizontal conductors are isolated or through remote-controlled valves and lower collectors communicated with the underground tank Stu. 5. The method according to claim 1, characterized in that the production of the formation from horizontal wells enters the underground reservoir through remotely controlled valves and lower collectors from part of the perforated pipes and / or chambers of horizontal conductors, periodically changing their combination using remotely controlled valves according to the technological production mode, while other perforated pipes and / or chambers of horizontal conductors are isolated or through remotely controlled valves and collectors communicated with the steam line. 6. The method according to claim 1, characterized in that during the operation of horizontal wells, geophysical surveys, maintenance and repairs are performed using surface equipment with a flexible sleeve with the necessary set of instruments and tools through sealed central channels, with the simultaneous collection of products through valves and the lower manifold in an underground tank. 7. The method according to claim 1, characterized in that the pumps for pumping products are placed in an additional sealed vertical well equipped with a filter in the perforated zone of the underground tank and connected to a light fraction collection system.

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