Gel breaking blocking remover injection pump pry

Abstract

The utility model discloses a gel-breaking blocking remover injection pump pry, and relates to the technical field of oil extraction. A high-pressure pump is mounted on the pump pry, an inlet of the high-pressure pump is connected with a liquid inlet pipeline, an outlet of the high-pressure pump is connected with a liquid discharge pipeline, a one-way valve is mounted on the liquid discharge pipeline, and a feeding mechanism is mounted at the rear end of the one-way valve on the liquid discharge pipeline. The device has the advantages that the feeding mechanism is arranged at the rear end of the one-way valve of the liquid drainage pipeline of the high-pressure pump, normal-pressure feeding of the capsule gel breaking blocking remover and feeding of the capsule gel breaking blocking remover into the high-pressure pipeline are achieved through stretching and retracting of the electric push rod, continuous feeding can be achieved, meanwhile, the high-pressure pump does not need to be stopped, and the cost is reduced. The device has the characteristics of high safety performance and shortened operation time.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production, in particular to a gel-breaking and plugging-removing agent injection pump skid. Background Art

[0002] The gel breaker and plugging remover is a mixture of potassium persulfate and ammonium persulfate, which has strong oxidizing properties. When added directly, it reacts rapidly with the fracturing fluid at high temperature, causing the fracturing fluid to degrade prematurely and lose the ability to transport proppant, and even leading to failure of fracturing construction. The capsule gel breaker and plugging remover is a peroxide that is separately packed in a soluble shell and injected into the formation through a high-pressure pump. It has a good unblocking effect. Since the high-pressure pump uses a plunger pump, the capsule gel breaker and plugging remover cannot pass through the inlet and outlet check valves of the plunger pump and needs to be added at the high-pressure outlet of the high-pressure pump. Each operation requires the system to be stopped, which greatly extends the construction period and has high safety risks. Utility Model Content

[0003] In order to solve the problems of long construction period and high safety risk when adding a gel-breaking and plugging-releasing agent, the utility model provides a gel-breaking and plugging-releasing agent injection pump skid.

[0004] The technical solution provided by the utility model is: a gel-breaking and plugging-removing agent injection pump skid, comprising a pump skid, a high-pressure pump is installed on the pump skid, the inlet of the high-pressure pump is connected to a liquid inlet pipeline, the outlet of the high-pressure pump is connected to a liquid discharge pipeline, a one-way valve is installed on the liquid discharge pipeline, and a dosing mechanism is installed at the rear end of the one-way valve on the liquid discharge pipeline;

[0005] The dosing mechanism includes an inflow pipe and an outflow pipe, the inflow pipe is connected in parallel with the outflow pipe and the bypass pipe, and the dosing mechanism also includes a conversion body, which is composed of an upper cylinder A and a lower cylinder B. The upper part of the cylinder A is connected with the bypass pipe, and a dosing pipe is arranged on the upper part of the cylinder A, and the dosing pipe is connected with the outside. The cylinder A and the cylinder B are connected through an intermediate pipe, and the lower part of the cylinder B is connected with the outflow pipe through a reflux pipe;

[0006] The inner hole clearance of cylinder A is connected to piston A, the inner hole clearance of cylinder B is connected to piston B, an electric push rod is fixedly installed on the left side of the conversion body, the telescopic rod of the electric push rod is fixedly connected to the rigid plate, the left side of piston A is fixedly connected to driving column A, the left side of piston B is fixedly connected to driving column B, and driving column A and driving column B are fixedly connected to the rigid plate;

[0007] The piston A is provided with a receiving hole which passes through from top to bottom. The piston A is provided with three sealing rings on the left side of the receiving hole and three sealing rings on the right side of the receiving hole.

[0008] A countersunk hole is opened on the left side of the right end surface of piston B, an upper opening is opened on the upper part of piston B, and the upper opening is connected with the countersunk hole, a lower opening is opened on the lower part of piston B, and the lower opening is connected with the countersunk hole, a blind plate is welded to the right end of the countersunk hole of piston B, sealing rings are respectively provided on both sides of the upper opening of piston B, and sealing rings are respectively provided on both sides of the lower opening of piston B.

[0009] When the telescopic rod of the electric push rod is retracted, the receiving hole of piston A is connected with the dosing pipe, the sealing ring of piston A seals the middle pipe, the middle pipe and the upper opening of piston B are sealed, and the lower opening of piston B is connected with the return pipe;

[0010] When the telescopic rod of the electric push rod is extended, the accommodating hole of piston A is connected with the bypass pipe and the intermediate pipe, the sealing ring of piston A seals the dosing pipe, the upper opening of piston B is connected with the intermediate pipe, the lower opening of piston B and the return pipe are staggered, and the sealing ring of piston B seals the return pipe.

[0011] The beneficial effects of the utility model are as follows: by arranging a dosing mechanism at the rear end of the one-way valve of the high-pressure pump discharge pipe, and utilizing the two actions of extending and retracting the electric push rod, the two functions of normal-pressure dosing of the capsule debonding and plugging-removing agent and the entry of the capsule debonding and plugging-removing agent into the high-pressure pipe are realized, continuous dosing can be performed, and the high-pressure pump does not need to be stopped, which has the characteristics of high safety performance and shortened operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0013] Attached Figure 2 It is a structural schematic diagram of the dosing mechanism in the utility model;

[0014] Attached Figure 3 A schematic diagram of the partial structure of the dosing mechanism in the utility model;

[0015] Attached Figure 4 It is a structural schematic diagram of the piston A in the utility model;

[0016] Attached Figure 5 It is a structural schematic diagram of the piston B in the utility model;

[0017] Attached Figure 6 It is a schematic diagram of the action of the dosing mechanism when the telescopic rod is extended in the utility model.

[0018] In the figure, 1-pump skid, 2-high-pressure pump, 3-liquid inlet pipe, 4-liquid discharge pipe, 5-check valve, 6-dosing mechanism, 7-outflow pipe, 8-inflow pipe, 9-bypass pipe, 10-return pipe, 11-dosing pipe, 12-converter, 121-cylinder A, 122-cylinder B, 13-piston A, 131-accommodating hole, 14-piston B, 141-upper opening, 142-lower opening, 143-countersunk hole, 144-blind plate, 15-electric push rod, 16-middle pipe, 17-rigid plate, 18-driving column A, 19-driving column B, 20-telescopic rod. DETAILED DESCRIPTION

[0019] like Figures 1 to 6 As shown, a gel-breaking and plugging-removing agent injection pump skid comprises a pump skid 1, a high-pressure pump 2 is installed on the pump skid 1, the inlet of the high-pressure pump 2 is connected to a liquid inlet pipe 3, the outlet of the high-pressure pump 2 is connected to a liquid discharge pipe 4, a one-way valve 5 is installed on the liquid discharge pipe 4, and a dosing mechanism 6 is installed at the rear end of the one-way valve 5;

[0020] The dosing mechanism 6 includes an inflow pipe 8 and an outflow pipe 7. The inflow pipe 8 is connected in parallel with the outflow pipe 7 and the bypass pipe 9. The dosing mechanism 6 also includes a conversion body 12. The conversion body 12 is composed of an upper cylinder A121 and a lower cylinder B122. The upper part of the cylinder A121 is connected to the bypass pipe 9. The upper part of the cylinder A121 is provided with a dosing pipe 11, which is connected to the outside. The cylinder A121 and the cylinder B122 are connected through an intermediate pipe 16. The lower part of the cylinder B122 is connected to the outflow pipe 7 through a return pipe 10.

[0021] The inner hole clearance of cylinder A121 is connected with piston A13, the inner hole clearance of cylinder B122 is connected with piston B14, an electric push rod 15 is fixedly installed on the left side of the conversion body 12, the telescopic rod 20 of the electric push rod 15 is fixedly connected with the rigid plate 17, the left side of piston A13 is fixedly connected with driving column A18, the left side of piston B14 is fixedly connected with driving column B19, and driving columns A18 and B19 are fixedly connected with the rigid plate 17;

[0022] The piston A13 is provided with a receiving hole 131 which passes through from top to bottom. The piston A13 is provided with three sealing rings on the left side of the receiving hole 131 and three sealing rings on the right side of the receiving hole 131.

[0023] A countersunk hole 143 is opened on the left side of the right end surface of the piston B14, an upper opening 141 is opened on the upper part of the piston B14, and the upper opening 141 is connected to the countersunk hole 143, a lower opening 142 is opened on the lower part of the piston B14, and the lower opening 142 is connected to the countersunk hole 143, a blind plate 144 is welded to the right end of the countersunk hole 143 of the piston B14, and a sealing ring is provided on both sides of the upper opening 141 of the piston B14, and a sealing ring is provided on both sides of the lower opening 142 of the piston B14.

[0024] When the telescopic rod 20 of the electric push rod 15 is retracted, the receiving hole 131 of the piston A13 is connected to the dosing pipe 11, the sealing ring of the piston A13 seals the intermediate pipe 16, the intermediate pipe 16 and the upper opening 141 of the piston B14 are sealed, and the lower opening 142 of the piston B14 is connected to the return pipe 10. At this time, the dosing pipe 11 and the receiving hole 131 are in a normal pressure state, and the capsule debonding and blocking agent is added into the dosing pipe 11, and the capsule debonding and blocking agent falls into the receiving hole 131. At the same time, the capsule debonding and blocking agent falling into the sink hole 143 flows into the return pipe 10 through the lower opening 142, flows out of the pipe 7, and enters the formation;

[0025] When the telescopic rod 20 of the electric push rod 15 is extended, the accommodating hole 131 of the piston A13 is connected with the bypass pipe 9 and the intermediate pipe 16, the sealing ring of the piston A13 seals the dosing pipe 11, the upper opening 141 of the piston B14 is connected with the intermediate pipe 16, the lower opening 142 of the piston B14 and the reflux pipe 10 are staggered, and the sealing ring of the piston B14 seals the reflux pipe 10. At this time, the capsule debonding and blocking agent in the accommodating hole 131 flows to the intermediate pipe 16, the upper opening 141, and falls into the counterbore 143 along with the fluid in the bypass pipe 9.

[0026] By arranging a dosing mechanism 6 at the rear end of the one-way valve 5 of the discharge pipe 4 of the high-pressure pump 2 and utilizing the extension and retraction of the electric push rod 15, the two functions of normal-pressure dosing of the capsule debonding and plugging-removing agent and the entry of the capsule debonding and plugging-removing agent into the high-pressure pipe can be realized. Continuous dosing can be performed and the high-pressure pump 2 does not need to be stopped. The system has the characteristics of high safety performance and shortened operation time.

Claims

1. A pump skid for injecting gel breaking and plugging removing agents, comprising a pump skid (1), characterized in that: A high-pressure pump (2) is installed on the pump skid (1); the inlet of the high-pressure pump (2) is connected to a liquid inlet pipe (3); the outlet of the high-pressure pump (2) is connected to a liquid discharge pipe (4); a one-way valve (5) is installed on the liquid discharge pipe (4); and a dosing mechanism (6) is installed on the liquid discharge pipe (4) at the rear end of the one-way valve (5); The dosing mechanism (6) comprises an inflow pipe (8) and an outflow pipe (7), wherein the inflow pipe (8) is connected in parallel to the outflow pipe (7) and is connected to a bypass pipe (9). The dosing mechanism (6) further comprises a conversion body (12), wherein the conversion body (12) is composed of an upper cylinder A (121) and a lower cylinder B (122), wherein the upper portion of the cylinder A (121) is connected to the bypass pipe (9), and a dosing pipe (11) is provided on the upper portion of the cylinder A (121), wherein the dosing pipe (11) is connected to the outside, and the cylinder A (121) and the cylinder B (122) are connected via an intermediate pipe (16), and the lower portion of the cylinder B (122) is connected to the outflow pipe (7) via a return pipe (10); The inner hole of the cylinder A (121) is connected to the piston A (13) through a clearance fit, and the inner hole of the cylinder B (122) is connected to the piston B (14) through a clearance fit. An electric push rod (15) is fixedly installed on the left side of the conversion body (12). The telescopic rod (20) of the electric push rod (15) is fixedly connected to the rigid plate (17). The left side of the piston A (13) is fixedly connected to the driving column A (18). The left side of the piston B (14) is fixedly connected to the driving column B (19). The driving column A (18) and the driving column B (19) are fixedly connected to the rigid plate (17). The piston A (13) is provided with a receiving hole (131) which passes through the piston A (13) from top to bottom. The piston A (13) is provided with three sealing rings on the left side of the receiving hole (131), and the piston A (13) is provided with three sealing rings on the right side of the receiving hole (131). The piston B (14) is provided with a countersunk hole (143) from the right end surface to the left, an upper opening (141) is provided at the upper part of the piston B (14), the upper opening (141) is communicated with the countersunk hole (143), a lower opening (142) is provided at the lower part of the piston B (14), the lower opening (142) is communicated with the countersunk hole (143), a blind plate (144) is welded to the right end of the countersunk hole (143), the piston B (14) is provided with sealing rings on both sides of the upper opening (141), and the piston B (14) is provided with sealing rings on both sides of the lower opening (142).

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