Unconventional oil reservoir yield increase measure integrated implementation device

Abstract

The utility model discloses an unconventional oil reservoir yield increase measure integrated implementation device, and belongs to the technical field of unconventional oil reservoir yield increase implementation devices. Comprising a bottom plate, the bottom plate is fixedly installed through bolts in a vehicle-mounted threaded mode, an oil gas pumping assembly, a negative pressure tank, a liquid pumping tank, an oil gas tank and a control electric cabinet are installed on the bottom plate in a threaded mode through a threaded structure, and the device is assembled and installed on the bottom plate in a centralized mode and installed in a vehicle-mounted mode, convenient to move, transport and process, high in centralization and high in automation control degree; the electro-hydraulic pulse shock wave controller emits electro-hydraulic pulse shock waves into a perforation section through the shock wave emitter, so that hard blockages in the perforation section of an oil well pipeline are removed, cracks are generated in surrounding stratums at the same time, oil and gas in the stratums are led out, yield increase is achieved, oil and gas are pumped into the oil-gas separator, and oil-gas separation is achieved. The negative pressure pump enables the outer cavity of the negative pressure tank to form negative pressure through a pipeline, oil-gas separation of the oil-gas separator is accelerated, and yield increasing treatment is further conducted.

Description

Technical Field

[0001] This application relates to the technical field of unconventional reservoir stimulation implementation devices, and more specifically, to an integrated implementation device for unconventional reservoir stimulation measures. Background Art

[0002] Unconventional reservoirs refer to those oil and gas reservoirs that do not conform to the traditional oil and gas engineering production mode, such as shale oil, shale gas, coalbed methane, etc. During the production process of oil and gas wells, non-permeable obstacles will form at the perforation of the pipeline in the formation, which may lead to a decrease in the oil and gas seepage capacity and a reduction in the production of oil and gas reservoirs. Currently, effective stimulation techniques include injecting chemical reagents and emitting liquid-electric pulse shock waves into the perforation section, which can effectively remove hard blockages. However, the existing implementation devices have a low degree of centralization, with numerous equipment, making assembly, installation, and transportation inconvenient. Moreover, the oil and gas often carry formation water, and oil and gas separation equipment is required. In view of this, we propose an integrated implementation device for unconventional reservoir stimulation measures. Summary of the Utility Model

[0003] 1. Technical Problems to be Solved

[0004] The purpose of this application is to provide an integrated implementation device for unconventional reservoir stimulation measures, which solves the technical problems in the above background art that the existing implementation devices have a low degree of centralization, numerous equipment, inconvenient assembly, installation, and transportation, and the oil and gas often carry formation water and require oil and gas separation equipment. The integrated implementation device for unconventional reservoir stimulation measures can be centrally assembled and installed on the bottom plate and installed on a vehicle for easy mobile transportation. It has a high degree of centralization and a high degree of automatic control. The liquid-electric pulse shock wave controller emits liquid-electric pulse shock waves into the perforation section through the shock wave emitter to remove hard blockages in the perforation section of the oil well pipeline, and at the same time generates fractures in the surrounding formation to allow formation oil and gas to escape, achieving production increase. The oil, liquid, and gas are drawn into the oil and gas separator for oil and gas separation. The negative pressure pump forms a negative pressure in the outer cavity of the negative pressure tank through a pipeline to accelerate the oil and gas separation in the oil and gas separator for further production increase treatment.

[0005] 2. Technical Solutions

[0006] The technical solution of this application provides an integrated implementation device for enhanced oil recovery measures in unconventional reservoirs, including: a bottom plate, which is fixedly installed on a vehicle through bolt-on vehicle-mounted threads. On the bottom plate, an oil and gas extraction assembly, a negative pressure tank, a liquid extraction tank, an oil and gas tank, and a control electrical cabinet are threadedly installed through a threaded structure. The oil and gas extraction assembly includes a bracket, on the upper surface of which a liquid extraction pump and a liquid-electric pulse shock controller are fixedly installed. A pipe reel is rotatably installed on the bracket, and a coiled tubing is wound on the pipe reel. One end of the coiled tubing is fixedly communicated with the liquid extraction pump, and the bottom end of the coiled tubing is inserted into the oil well and is equipped with a spray gun and a shock wave emitter at the bottom. The liquid-electric pulse shock controller emits a liquid-electric pulse shock into the perforation section through the shock wave emitter. An oil and gas separator is arranged in the negative pressure tank, and an outer cavity is formed between the negative pressure tank and the oil and gas separator. The liquid extraction pump is fixedly communicated with a drain pipe, and the drain pipe is fixedly communicated with the upper end of the oil and gas separator. The liquid extraction tank is communicated with a liquid pump through a pipeline, and the liquid pump is communicated with the bottom end of the oil and gas separator through a pipeline. The oil and gas tank is communicated with a negative pressure pump through a pipeline, and the negative pressure pump is communicated with the outer cavity of the negative pressure tank through a pipeline.

[0007] By adopting the above technical solution, the integrated implementation device for enhanced oil recovery measures in unconventional reservoirs can centrally assemble and install the oil and gas extraction assembly, the negative pressure tank, the liquid extraction tank, the oil and gas tank, and the control electrical cabinet on the bottom plate, which is convenient for vehicle-mounted installation, mobile transportation and processing, with high centralization and high degree of automatic control. Among them, a liquid extraction pump, a liquid-electric pulse shock controller and a pipe reel are installed on the bracket, and a coiled tubing is wound on the pipe reel. The coiled tubing connected to the liquid extraction pump is inserted into the oil well, so that the spray gun and the shock wave emitter reach the predicted perforation section. The liquid-electric pulse shock controller emits a liquid-electric pulse shock into the perforation section through the shock wave emitter to remove hard blockages in the perforation section of the oil well pipeline, and at the same time generate fractures in the surrounding formation, causing the formation oil and gas to escape, so as to achieve enhanced oil recovery. The liquid extraction pump extracts oil and gas through the coiled tubing. The oil and gas often carry deep underground water. The oil, liquid and gas enter the oil and gas separator inside the negative pressure tank. The liquid part is blocked, and the gas part enters the outer cavity. The negative pressure pump is communicated with the outer cavity of the negative pressure tank through a pipeline, continuously evacuating the gas in the outer cavity, and then using the negative pressure to accelerate the overflow of the oil and gas in the oil and gas separator to the inside of the outer cavity for further enhanced oil recovery treatment. For the liquid part in the oil and gas separator, the liquid pump extracts it from the bottom of the oil and gas separator through a pipeline and stores it in the liquid extraction tank for effective recycling and treatment.

[0008] Optionally, a plurality of mounting holes are provided on the bottom plate, and the mounting holes are distributed in a matrix array.

[0009] By adopting the above technical solution, the bottom plate can be assembled and installed using bolts through the mounting holes to achieve the purpose of vehicle-mounted transportation.

[0010] Optionally, the bracket, the liquid pump and the negative pressure pump are all installed on the bottom plate by bolt threads, and the liquid extraction pump, the liquid-electric pulse shock controller, the liquid pump and the negative pressure pump are all electrically connected to the control cabinet.

[0011] By adopting the above technical solution, the control cabinet can utilize the existing mature PLC circuit control technology to achieve the purpose of automatically controlling the liquid extraction pump, the liquid-electric pulse shock controller, the liquid pump and the negative pressure pump.

[0012] Optionally, a motor is fixedly installed on the bracket, the motor is drivingly connected with a gear set, the gear set is rotatably installed on the bracket, and one of the gear sets rotates along the bracket through a shaft transmission pipe tray.

[0013] By adopting the above technical solution, the motor drives the gear set to rotate, which can drive the pipe tray to rotate, so as to realize the insertion of the coiled tubing into the oil well for internal treatment.

[0014] Optionally, the drain pipe penetrates through the inside of the negative pressure tank and is fixedly communicated with the upper end of the oil-gas separator.

[0015] By adopting the above technical solution, the liquid extraction pump enables the oil and gas to enter the inside of the oil-gas separator through the drain pipe, and then the oil-gas separation purpose is realized by the oil-gas separator.

[0016] 3. Beneficial effects

[0017] One or more technical solutions provided in the technical solution of the present application have at least the following technical effects or advantages: The integrated implementation device for unconventional reservoir production enhancement measures can be assembled and installed centrally on the bottom plate and installed on a vehicle, which is convenient for mobile transportation and processing, has a high degree of centralization and a high degree of automatic control. The liquid-electric pulse shock controller emits liquid-electric pulse shocks into the perforation section through the shock emitter, which is used to remove the hard blockages in the perforation section of the oil well pipeline, and at the same time generate fractures in the surrounding formation, so that the formation oil and gas gush out to achieve production enhancement. The oil, liquid and gas are extracted into the oil-gas separator to achieve oil-gas separation. The negative pressure pump forms a negative pressure in the outer cavity of the negative pressure tank through the pipeline, accelerating the oil-gas separation in the oil-gas separator and further enhancing production. Description of the drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of an integrated implementation device for unconventional reservoir production enhancement measures disclosed in a preferred embodiment of the present application.

[0019] Figure 2 It is a schematic diagram of the sectional structure of the negative pressure tank of an integrated implementation device for unconventional reservoir production enhancement measures disclosed in a preferred embodiment of the present application.

[0020] Figure 3 For an integrated implementation device for unconventional reservoir production enhancement measures disclosed in a preferred embodiment of the present application Figure 2Schematic diagram of the enlarged structure at A in the [original context].

[0021] Description of the reference numerals in the figure: 1. Bottom plate; 11. Mounting hole; 2. Oil and gas extraction assembly; 21. Support; 22. Liquid extraction pump; 23. Coiled tubing; 24. Pipe reel; 25. Spray gun; 251. Shock wave emitter; 26. Drain pipe; 27. Motor; 28. Gear set; 3. Negative pressure tank; 31. Oil and gas separator; 4. Liquid extraction tank; 41. Liquid pump; 5. Oil and gas tank; 51. Negative pressure pump; 6. Control electrical cabinet; 7. Liquid-electric pulse shock wave controller. Detailed implementation manners

[0022] The present application will be further described in detail below with reference to the accompanying drawings of the specification.

[0023] Refer to Figures 1 to 3, an embodiment of the present application provides an integrated implementation device for enhanced production measures in unconventional reservoirs, comprising: a bottom plate 1, which is fixedly installed on a vehicle by means of bolts with threaded connections. A gas and liquid extraction assembly 2, a negative pressure tank 3, a liquid extraction tank 4, a gas and oil tank 5, and a control electrical cabinet 6 are threadedly installed on the bottom plate 1 through threaded structures. The gas and liquid extraction assembly 2 includes a support 21. A liquid extraction pump 22 and a liquid-electric pulse shock controller 7 are fixedly installed on the upper surface of the support 21. A pipe reel 24 is rotatably installed on the support 21, and a coiled tubing 23 is wound and installed on the pipe reel 24. One end of the coiled tubing 23 is fixedly communicated with the liquid extraction pump 22. The bottom end of the coiled tubing 23 is inserted into an oil well, and a spray gun 25 and a shock wave emitter 251 are installed at the bottom. The liquid-electric pulse shock controller 7 emits liquid-electric pulse shock waves into the perforation section through the shock wave emitter 251. An oil and gas separator 31 is arranged in the negative pressure tank 3, and an outer cavity is formed between the negative pressure tank 3 and the oil and gas separator 31. The liquid extraction pump 22 is fixedly communicated with a drain pipe 26, and the drain pipe 26 is fixedly communicated with the upper end of the oil and gas separator 31. The liquid extraction tank 4 is communicated with a liquid pump 41 through a pipeline, and the liquid pump 41 is communicated with the bottom end of the oil and gas separator 31 through a pipeline. The gas and oil tank 5 is communicated with a negative pressure pump 51 through a pipeline, and the negative pressure pump 51 is communicated with the outer cavity of the negative pressure tank 3 through a pipeline. This integrated implementation device for enhanced production measures in unconventional reservoirs can centrally assemble and install the gas and liquid extraction assembly 2, the negative pressure tank 3, the liquid extraction tank 4, the gas and oil tank 5, and the control electrical cabinet 6 on the bottom plate 1, which is convenient for on-vehicle installation, convenient for mobile transportation and processing, with high centralization and high degree of automatic control. Among them, the liquid extraction pump 22, the liquid-electric pulse shock controller 7, and the pipe reel 24 are installed on the support 21. The coiled tubing 23 wound on the pipe reel 24 is inserted into the oil well, so that the spray gun 25 and the shock wave emitter 251 reach the predicted perforation section. The liquid-electric pulse shock controller 7 emits liquid-electric pulse shock waves into the perforation section through the shock wave emitter 251 to remove hard blockages in the perforation section of the oil well pipeline, and at the same time generate fractures in the surrounding formation, causing formation oil and gas to flow out, realizing enhanced production. The liquid extraction pump 22 extracts oil and gas through the coiled tubing 23. Underground deep water is often attached to the oil and gas. The oil, liquid, and gas enter the interior of the oil and gas separator 31 in the negative pressure tank 3. The liquid part is blocked, and the gas part enters the outer cavity. The negative pressure pump 51 is communicated with the outer cavity of the negative pressure tank 3 through a pipeline, continuously evacuating the gas in the outer cavity, and then using negative pressure to accelerate the overflow of oil and gas in the oil and gas separator 31 to the interior of the outer cavity for further enhanced production treatment. For the liquid part in the oil and gas separator 31, the liquid pump 41 extracts it from the bottom of the oil and gas separator 31 through a pipeline and stores it in the liquid extraction tank 4 for effective recycling and treatment.

[0024] Refer to Figure 1 and Figure 2 , a plurality of mounting holes 11 are formed on the bottom plate 1. The mounting holes 11 are distributed in a matrix array. The bottom plate 1 can be assembled and installed using bolts through the mounting holes 11 to achieve the purpose of on-vehicle transportation.

[0025] Reference Figure 2 and Figure 3 , the bracket 21, the liquid pump 41 and the negative pressure pump 51 are all installed on the bottom plate 1 by bolt threading. The liquid extraction pump 22, the liquid-electric pulse shock controller 7, the liquid pump 41, and the negative pressure pump 51 are all electrically connected to the control electric cabinet 6. The control electric cabinet 6 can utilize the existing mature PLC circuit control technology to achieve the purpose of automatically controlling the liquid extraction pump 22, the liquid-electric pulse shock controller 7, the liquid pump 41, and the negative pressure pump 51.

[0026] Reference Figure 2 and Figure 3 , a motor 27 is fixedly installed on the bracket 21. The motor 27 is drivingly connected to a gear set 28. The gear set 28 is rotatably installed on the bracket 21. And one gear set 28 rotates along the bracket 21 through a shaft transmission pipe tray 24. The motor 27 drives the gear set 28 to rotate, which can drive the pipe tray 24 to rotate, so as to realize the insertion of the coiled tubing 23 into the oil well for internal treatment.

[0027] Reference Figure 2 and Figure 3 , the drain pipe 26 penetrates through the inside of the negative pressure tank 3 and is fixedly communicated with the upper end of the oil-gas separator 31. The liquid extraction pump 22 enables the oil and gas to enter the inside of the oil-gas separator 31 through the drain pipe 26, and then the oil-gas separation purpose is achieved by the oil-gas separator 31.

[0028] Working principle: The integrated implementation device for enhancing production of unconventional reservoirs can centrally assemble and install the oil and gas extraction assembly 2, the negative pressure tank 3, the liquid extraction tank 4, the oil and gas tank 5, and the control electric cabinet 6 on the bottom plate 1, which is convenient for on-vehicle installation, convenient for mobile transportation and processing, with high centralization and high degree of automatic control. Among them, the liquid extraction pump 22, the liquid-electric pulse shock controller 7, and the pipe tray 24 are installed on the bracket 21. The coiled tubing 23 is wound on the pipe tray 24. The coiled tubing 23 connected to the liquid extraction pump 22 is inserted into the oil well, so that the spray gun 25 and the shock wave emitter 251 reach the predetermined perforation section. The liquid-electric pulse shock controller 7 emits liquid-electric pulse shock waves into the perforation section through the shock wave emitter 251 to remove the hard blockages in the perforation section of the oil well pipeline, and at the same time generate fractures in the surrounding formation, so that the formation oil and gas gush out to achieve production increase. The liquid extraction pump 22 extracts oil and gas through the coiled tubing 23. The oil and gas often carry underground deep water. The oil, liquid and gas enter the inside of the oil-gas separator 31 in the negative pressure tank 3. The liquid part is blocked, and the gas part enters the outer cavity. The negative pressure pump 51 is connected to the outer cavity of the negative pressure tank 3 through a pipeline, and continuously evacuates the gas in the outer cavity. Then, the negative pressure can be used to accelerate the overflow of the oil and gas in the oil-gas separator 31 to the inside of the outer cavity for further production increase treatment. For the liquid part in the oil-gas separator 31, the liquid pump 41 extracts it from the bottom of the oil-gas separator 31 through a pipeline and stores it in the liquid extraction tank 4 for effective recycling and treatment.

Claims

1. An integrated implementation device for unconventional oil reservoir production enhancement measures, characterized in that: The invention comprises: a bottom plate (1), the bottom plate (1) being fixedly installed by bolts on a vehicle, an oil and gas extraction component (2), a negative pressure tank (3), a liquid extraction tank (4), an oil and gas tank (5) and a control cabinet (6) being threadedly installed on the bottom plate (1) by a threaded structure, the oil and gas extraction component (2) comprising a bracket (21), a liquid extraction pump (22) and a liquid-electric pulse shock wave controller (7) being fixedly installed on the upper surface of the bracket (21), a pipe disc (24) being rotatably installed on the bracket (21), and a continuous oil pipe (23) being wound and installed on the pipe disc (24), one end of the continuous oil pipe (23) being fixedly connected to the liquid extraction pump (22), the bottom end of the continuous oil pipe (23) being inserted into an oil well, and a spray gun (25), a shock wave controller (7) and a spray gun (25) being installed at the bottom. The liquid-electric pulse shock wave controller (7) emits a liquid-electric pulse shock wave into the perforation section via the shock wave transmitter (251); an oil-gas separator (31) is arranged in the negative pressure tank (3), and an outer cavity is formed between the negative pressure tank (3) and the oil-gas separator (31); the liquid pump (22) is fixedly connected to a liquid discharge pipe (26), and the liquid discharge pipe (26) is fixedly connected to the upper end of the oil-gas separator (31); the liquid pump (41) is connected to a liquid pump (41) via a pipeline, and the liquid pump (41) is connected to the bottom end of the oil-gas separator (31) via a pipeline; the oil-gas tank (5) is connected to a negative pressure pump (51) via a pipeline, and the negative pressure pump (51) is connected to the outer cavity of the negative pressure tank (3) via a pipeline.

2. The device for implementing integrated measures for increasing production in unconventional oil reservoirs according to claim 1, characterized in that: The bottom plate (1) is provided with a plurality of mounting holes (11), and the mounting holes (11) are distributed in a matrix array.

3. The device for implementing integrated measures for increasing production in unconventional oil reservoirs according to claim 1, characterized in that: The bracket (21), the liquid pump (41) and the negative pressure pump (51) are all mounted on the base plate (1) by means of bolt threads, and the liquid pump (22), the liquid-electric pulse shock wave controller (7), the liquid pump (41) and the negative pressure pump (51) are all electrically connected to the control cabinet (6).

4. The device for implementing integrated measures for increasing production in unconventional oil reservoirs according to claim 1, characterized in that: A motor (27) is fixedly mounted on the bracket (21), and the motor (27) is drivingly connected to a gear set (28). The gear set (28) is rotatably mounted on the bracket (21), and the gear set (28) rotates along the bracket (21) via a shaft driving pipe disc (24).

5. The device for implementing integrated measures for increasing production in unconventional oil reservoirs according to claim 1, characterized in that: The liquid discharge pipe (26) passes through the interior of the negative pressure tank (3) and is fixedly connected to the upper end of the oil-gas separator (31).

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