Gel breaking blocking remover injection amount control device

Abstract

The utility model discloses a gel-breaking blocking remover injection rate control device and relates to the technical field of oil extraction. When the piston moves to the position where the containing hole coincides with the discharging pipe, the push rod pushes the steel wire rope, the steel wire rope pulls the baffle to retreat from the containing hole, and when the piston moves to the position where the containing hole coincides with the feeding pipe, the compression spring pushes the baffle to the left side of the containing hole. The device has the advantages that the containing hole receives one gel-breaking blocking remover capsule at the position of the feeding pipe every time, after the containing hole carries the gel-breaking blocking remover capsule to move to the position of the discharging pipe, the baffle is moved away, the gel-breaking blocking remover capsule falls into the discharging pipe, the operation frequency of the linear motor is the injection amount of the gel-breaking blocking remover capsule, and the injection amount of the gel-breaking blocking remover capsule is larger than the injection amount of the gel-breaking blocking remover capsule. For example, the linear motor stretches out and retracts for 100 times per minute, that is, the injection amount of the gel breaking blocking remover capsule is 100 / min, and the injection flow of the gel breaking blocking remover capsule can be changed by controlling the linear motor in a variable frequency mode.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production, in particular to a device for controlling the injection amount of a gel-breaking and plugging-releasing agent. 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 gel breaker and plugging remover capsules are peroxides that are individually packed in a soluble shell and injected into the formation through a high-pressure pump, with a good unblocking effect. Since the high-pressure pump uses a plunger pump, the gel breaker and plugging remover capsules cannot pass through the inlet and outlet check valves of the plunger pump and need to be added at the high-pressure outlet of the high-pressure pump. When adding gel breaker and plugging remover capsules to the high-pressure pipeline, the number of added capsules needs to be accurately controlled. For this reason, we have developed a gel breaker and plugging remover injection amount control device. Utility Model Content

[0003] In order to accurately control the injection amount of a gel-breaking and plugging-releasing agent, the utility model provides a gel-breaking and plugging-releasing agent injection amount control device.

[0004] The technical scheme provided by the utility model is: a control device for controlling the injection amount of a debonding and blocking agent, comprising a cylinder, a closed blind plate on the right side of the cylinder, a feed pipe on the upper left side of the cylinder, a hopper on the upper part of the feed pipe, a discharge pipe on the lower right side of the cylinder, a piston connected by clearance matching in the cylinder, a receiving hole through which the piston is provided, sealing rings on both sides of the receiving hole, the sealing rings on both sides of the receiving hole can cover the inner holes of the feed pipe and the discharge pipe, a rigid column is fixedly connected to the left side of the piston, a linear motor is fixedly connected to the left side of the feed pipe, a telescopic rod of the linear motor and the rigid column are jointly fixedly connected to the rigid plate, a strip hole in the horizontal direction is provided on the right end face of the piston, the strip hole passes through the receiving hole, a baffle is inserted in the strip hole, a steel wire rope is fixedly connected to the right side of the baffle, a push rod is extended to the right from the right end face of the piston, the steel wire rope connected to the baffle passes through a fixed pulley A and a fixed pulley B and is fixedly connected to the right end of the push rod, and the fixed pulley A and the fixed pulley B are fixedly connected to the blind plate;

[0005] A positioning column is welded on the blind plate, a compression spring is installed on the positioning column, and the left side of the compression spring presses against the baffle.

[0006] The inner hole diameter of the feed pipe is slightly larger than the gel-breaking and plugging-removing agent capsule, the diameter of the receiving hole is slightly larger than the gel-breaking and plugging-removing agent capsule, and the distance from the baffle to the top of the piston is slightly larger than the gel-breaking and plugging-removing agent capsule.

[0007] When the piston moves to the overlapping position of the accommodating hole and the discharge pipe, the push rod pushes the wire rope, and the wire rope pulls the baffle to exit the accommodating hole. When the piston moves to the overlapping position of the accommodating hole and the feed pipe, the compression spring pushes the baffle to the left side of the accommodating hole.

[0008] The right side of the cylinder barrel is connected to the discharge pipe by a guide pipe.

[0009] The beneficial effects of the utility model are as follows: the accommodating hole receives one gel-breaking and plugging-removing agent capsule each time at the position of the feed pipe, and after the accommodating hole carries the gel-breaking and plugging-removing agent capsule to the position of the discharge pipe, the baffle is removed, and the gel-breaking and plugging-removing agent capsule falls into the discharge pipe. The operating frequency of the linear motor is the injection amount of the gel-breaking and plugging-removing agent capsule. For example, the linear motor extends and retracts 100 times per minute, that is, the injection amount of the gel-breaking and plugging-removing agent capsule is 100 capsules / min, and the frequency conversion control of the linear motor can change the injection flow rate of the gel-breaking and plugging-removing agent capsule. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0011] Attached Figure 2 Yes Figure 1 A magnified image of point A;

[0012] Attached Figure 3 Working diagram of the present utility model.

[0013] In the figure, 1-cylinder, 2-piston, 3-feed pipe, 4-discharge pipe, 5-accommodating hole, 6-baffle, 7-bar hole, 8-push rod, 9-linear motor, 10-telescopic rod, 11-rigid column, 12-rigid plate, 13-fixed pulley A, 14-fixed pulley B, 15-wire rope, 16-compression spring, 17-positioning column, 18-containing hopper, 19-guide pipe, 20-blind plate. DETAILED DESCRIPTION

[0014] like Figures 1 to 3 As shown, a device for controlling the injection amount of a gel-breaking and plugging-removing agent comprises a cylinder 1, a closed blind plate 20 is provided on the right side of the cylinder 1, a feed pipe 3 is provided on the upper left side of the cylinder 1, a hopper 18 is provided on the upper part of the feed pipe 3, a discharge pipe 4 is provided on the lower right side of the cylinder 1, a piston 2 is connected with a clearance fit inside the cylinder 1, a receiving hole 5 which passes through the piston 2 from top to bottom, sealing rings are provided on both sides of the receiving hole 5 of the piston 2, and the sealing rings on both sides of the receiving hole 5 can cover the inner holes of the feed pipe 3 and the discharge pipe 4, a rigid column 11 is fixedly connected to the left side of the piston 2, and a hopper 18 is provided on the upper part of the feed pipe 3, and a discharge pipe 4 is provided on the lower right side of the cylinder 1, a piston 2 is connected with a clearance fit inside the cylinder 1, a receiving hole 5 which passes through the piston 2 from top to bottom, a sealing ring is provided on both sides of the receiving hole 5 of the piston 2, and the sealing rings on both sides of the receiving hole 5 can cover the inner holes of the feed pipe 3 and the discharge pipe 4, a rigid column 11 is fixedly connected to the left side of the piston 2, and a hopper 18 is provided on the upper part of the feed pipe 3, and a discharge pipe 4 is provided on the lower right side of the cylinder 1 ... A linear motor 9 is fixedly connected, and a telescopic rod 10 and a rigid column 11 of the linear motor 9 are fixedly connected to a rigid plate 12 together. A horizontal strip hole 7 is opened on the right end face of the piston 2, and the strip hole 7 passes through the accommodating hole 5. A baffle 6 is inserted in the strip hole 7, and a steel wire rope 15 is fixedly connected to the right side of the baffle 6. A push rod 8 extends rightward from the right end face of the piston 2, and the steel wire rope 15 connected to the baffle 6 passes through the fixed pulley A13 and the fixed pulley B14 and is fixedly connected to the right end of the push rod 8, and the fixed pulley A13 and the fixed pulley B14 are fixedly connected to the blind plate 20;

[0015] A positioning column 17 is welded on the blind plate 20 , and a compression spring 16 is installed on the positioning column 17 . The left side of the compression spring 16 presses against the baffle 6 .

[0016] The inner hole diameter of the feed pipe 3 is slightly larger than the gel-breaking and plugging-removing agent capsule, the diameter of the accommodating hole 5 is slightly larger than the gel-breaking and plugging-removing agent capsule, and the distance from the baffle 6 to the top of the piston 2 is slightly larger than the gel-breaking and plugging-removing agent capsule, that is, the accommodating hole 5 can only accommodate one gel-breaking and plugging-removing agent capsule at the feed pipe 3 position at a time.

[0017] The discharge pipe 4 of the device is installed on the outlet pipe of the high-pressure pump through a flange, and the gel-breaking and blocking-removing agent capsule is loaded into the hopper 18. The accommodating hole 5 receives one gel-breaking and blocking-removing agent capsule at a time at the position of the feed pipe 3. After the accommodating hole 5 carries the gel-breaking and blocking-removing agent capsule to the position of the discharge pipe 4, the baffle 6 is removed, and the gel-breaking and blocking-removing agent capsule falls into the discharge pipe 4. The operating frequency of the linear motor 9 is the injection amount of the gel-breaking and blocking-removing agent capsule. For example, the linear motor 9 extends and retracts 100 times per minute, that is, the injection amount of the gel-breaking and blocking-removing agent capsule is 100 capsules / min. The frequency conversion control of the linear motor 9 can change the injection flow rate of the gel-breaking and blocking-removing agent capsule.

[0018] When the piston 2 moves to the overlapping position of the accommodating hole 5 and the discharge pipe 4, the push rod 8 pushes the wire rope 15, and the wire rope 15 pulls the baffle 6 out of the accommodating hole 5. When the piston 2 moves to the overlapping position of the accommodating hole 5 and the feed pipe 3, the compression spring 16 pushes the baffle 6 to the left side of the accommodating hole 5.

[0019] A flow guide pipe 19 is connected between the right side of the cylinder barrel 1 and the discharge pipe 4 .

Claims

1. A device for controlling the injection amount of a gel-breaking and plugging-removing agent, comprising a cylinder (1), characterized in that: The right side of the cylinder barrel (1) is a closed blind plate (20), a feed pipe (3) is provided on the upper left side of the cylinder barrel (1), a hopper (18) is provided on the upper part of the feed pipe (3), a discharge pipe (4) is provided on the lower right side of the cylinder barrel (1), the cylinder barrel (1) is connected to the piston (2) with clearance fit, a receiving hole (5) is provided on the piston (2) and is connected vertically, the piston (2) is provided with sealing rings on both sides of the receiving hole (5), and the sealing rings on both sides of the receiving hole (5) can cover the inner holes of the feed pipe (3) and the discharge pipe (4), the left side of the piston (2) is fixedly connected to the rigid column (11), the left side of the feed pipe (3) is fixedly connected to the linear motor (9), and the linear motor The telescopic rod (10) and the rigid column (11) of the machine (9) are fixedly connected to the rigid plate (12) together; a horizontal strip hole (7) is opened on the right end surface of the piston (2); the strip hole (7) passes through the receiving hole (5); a baffle (6) is inserted into the strip hole (7); a steel wire rope (15) is fixedly connected to the right side of the baffle (6); a push rod (8) extends to the right from the right end surface of the piston (2); the steel wire rope (15) connected to the baffle (6) passes through a fixed pulley A (13) and a fixed pulley B (14) and is fixedly connected to the right end of the push rod (8); the fixed pulley A (13) and the fixed pulley B (14) are fixedly connected to the blind plate (20); A positioning column (17) is welded on the blind plate (20), a compression spring (16) is installed on the positioning column (17), and the left side of the compression spring (16) is pressed against the baffle (6).

2. A debonding and plugging agent injection control device according to claim 1, characterized in that: The inner diameter of the feed pipe (3) is larger than the gel-breaking and plugging-removing agent capsule, the diameter of the receiving hole (5) is larger than the gel-breaking and plugging-removing agent capsule, and the distance from the baffle (6) to the top of the piston (2) is larger than the gel-breaking and plugging-removing agent capsule.

3. A debonding and plugging agent injection control device according to claim 1, characterized in that: When the piston (2) moves to a position where the receiving hole (5) and the discharge pipe (4) overlap, the push rod (8) pushes the wire rope (15), and the wire rope (15) pulls the baffle (6) out of the receiving hole (5). When the piston (2) moves to a position where the receiving hole (5) and the feed pipe (3) overlap, the compression spring (16) pushes the baffle (6) to the left side of the receiving hole (5).

4. A debonding and plugging agent injection control device according to claim 1, characterized in that: A flow guide pipe (19) is connected between the right side of the cylinder barrel (1) and the discharge pipe (4).

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