Fracturing temporary plugging agent feeding device

Abstract

The utility model discloses a fracturing temporary plugging agent feeding device and relates to the technical field of oil extraction. A one-way valve B is mounted in the upper valve body, a one-way valve A is mounted in the lower valve body, the upper valve body is hermetically connected with a flange cover above the one-way valve B through a flange, the upper valve body is provided with a prepad fluid inlet pipe above the one-way valve B, the lower valve body is provided with a cylinder sleeve above the one-way valve A, and a piston is in clearance fit connection in the cylinder sleeve through a sealing ring. The outer side of the piston is fixedly connected with a plunger of a hydraulic lever. The fracturing temporary plugging agent feeding device has the advantages that due to the fact that the upper one-way valve A, the lower one-way valve B and the piston are adopted, the space between the one-way valve A and the one-way valve B becomes normal pressure, a fracturing temporary plugging agent can be fed into the lower valve body through a low-pressure pump, liquid and the fracturing temporary plugging agent are fed into a high-pressure manifold through a hydraulic cylinder, and energy consumption during fracturing temporary plugging agent feeding is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil production, in particular to a fracturing temporary plugging agent delivery device. Background Art

[0002] Fracturing temporary plugging agents can be roughly divided into solid temporary plugging agents, liquid temporary plugging agents and gas temporary plugging agents according to their different forms. At present, solid temporary plugging agents are commonly used on-site in oil fields. Solid temporary plugging agents have the advantages of convenient transportation, easy addition, and good plugging and diversion effects. On-site injection usually uses a pre-fluid to carry the temporary plugging agent and pump it into the high-pressure manifold at the rear end of the high-pressure plunger pump. Since the pressure of the high-pressure manifold is usually in the range of tens of MPa, directly using a high-pressure pump not only wastes energy, but also faces the risk of high-pressure release when releasing the fracturing temporary plugging agent. Utility Model Content

[0003] In order to solve the problems of safety and energy waste when placing temporary fracturing plugging agents, the utility model provides a temporary fracturing plugging agent placing device.

[0004] The technical scheme provided by the utility model is: a fracturing temporary plugging agent delivery device, comprising an upper valve body and a lower valve body, the lower part of the upper valve body is threadedly sealed and connected to the lower valve body, a one-way valve B is installed in the upper valve body, a one-way valve A is installed in the lower valve body, the upper valve body is connected to a flange cover through a flange seal at the upper part of the one-way valve B, the upper valve body is provided with a front liquid inlet pipe at the upper part of the one-way valve B, the lower valve body is provided with a cylinder sleeve at the upper part of the one-way valve A, a piston is connected to the cylinder sleeve through a sealing ring gap, the outer side of the piston is fixedly connected to the plunger of a hydraulic lever, the hydraulic cylinder has a pressure relief knob and a boost handle, and the hydraulic cylinder is fixedly connected to the lower valve body.

[0005] The liquid flow direction of both the one-way valve A and the one-way valve B is downward flow.

[0006] The flange cover is a quick-opening structure.

[0007] The beneficial effects of the utility model are as follows: due to the use of two upper and lower one-way valves A, one-way valve B and a piston, the space between the one-way valve A and the one-way valve B becomes a normal pressure, a low-pressure pump can be used to deliver a temporary fracturing plugging agent into the lower valve body, and a hydraulic cylinder is used to deliver liquid and the temporary fracturing plugging agent into a high-pressure manifold, thereby reducing the energy consumption when the temporary fracturing plugging agent is delivered. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Attached Figure 1 It is a structural schematic diagram of the utility model.

[0009] In the figure: 1-upper valve body, 2-lower valve body, 3-mounting flange, 4-flange cover, 5-front liquid inlet pipe, 6-cylinder sleeve, 7-piston, 8-hydraulic lever, 81-pressure relief knob, 82-boosting handle, 9-check valve A, 10-check valve B. DETAILED DESCRIPTION

[0010] like Figure 1 As shown, a fracturing temporary plugging agent delivery device comprises an upper valve body 1 and a lower valve body 2, wherein the lower portion of the upper valve body 1 is threadedly sealed and connected to the lower valve body 2, a one-way valve B10 is installed in the upper valve body 1, a one-way valve A9 is installed in the lower valve body 2, the upper valve body 1 is connected to a flange cover 4 through a flange seal at the upper portion of the one-way valve B10, the upper valve body 1 is provided with a pre-liquid inlet pipe 5 at the upper portion of the one-way valve B10, the lower valve body 2 is provided with a cylinder sleeve 6 at the upper portion of the one-way valve A9, a piston 7 is connected to the cylinder sleeve 6 through a sealing ring clearance fit, the outer side of the piston 7 is fixedly connected to the plunger of a hydraulic lever 8, the hydraulic cylinder 8 has a pressure relief knob 81 and a boost handle 82, and the hydraulic cylinder 8 is fixedly connected to the lower valve body 2.

[0011] In actual use, the flange cover 4 is opened to put the temporary fracturing plugging agent into the upper valve body 1, the flange cover 4 is closed, and low-pressure liquid is introduced into the pre-liquid inlet pipe 5 to send the liquid and the temporary fracturing plugging agent into the lower valve body 2, the hydraulic cylinder 8 is pressurized, and the liquid and the temporary fracturing plugging agent are sent to the high-pressure manifold, and then the hydraulic cylinder 8 is depressurized. At this time, the upper part of the one-way valve A9 is at normal pressure, and the temporary fracturing plugging agent is put again.

[0012] Due to the use of the upper and lower one-way valves A9, one-way valve B10 and piston 7, the space between the one-way valve A9 and the one-way valve B10 becomes normal pressure, the fracturing temporary plugging agent can be sent into the lower valve body 2 by using a low-pressure pump, and the liquid and the fracturing temporary plugging agent can be sent into the high-pressure manifold by using the hydraulic cylinder 7, thereby reducing the energy consumption when the fracturing temporary plugging agent is released.

[0013] The liquid flow direction of the one-way valve A9 and the one-way valve B10 is downward flow.

[0014] The flange cover 4 is a quick-opening structure.

Claims

1. A fracturing temporary plugging agent delivery device, comprising an upper valve body (1) and a lower valve body (2), characterized in that: The lower part of the upper valve body (1) is threadedly sealed and connected to the lower valve body (2). A check valve B (10) is installed in the upper valve body (1), and a check valve A (9) is installed in the lower valve body (2). The upper part of the upper valve body (1) is connected to the flange cover (4) through a flange seal. The upper part of the check valve B (10) is provided with a pre-liquid inlet pipe (5). The upper part of the upper valve body (1) is provided with a cylinder sleeve (6) on the upper part of the check valve A (9). The cylinder sleeve (6) is connected to a piston (7) through a sealing ring clearance fit. The outer side of the piston (7) is fixedly connected to the plunger of a hydraulic cylinder (8). The hydraulic cylinder (8) has a pressure relief knob (81) and a pressure boost handle (82). The hydraulic cylinder (8) is fixedly connected to the lower valve body (2).

2. A temporary fracturing plugging agent delivery device according to claim 1, characterized in that: The liquid flow direction of both the one-way valve A (9) and the one-way valve B (10) is downward flow.

3. A fracturing temporary plugging agent delivery device according to claim 1, characterized in that: The flange cover (4) is a quick-opening structure.

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