Composite water plugging and liquid preparing device

Abstract

The utility model relates to a composite water plugging and liquid preparing device. According to the technical scheme, a high-pressure liquid preparation assembly, a hydraulic driving assembly and a control box are installed on a base, and the high-pressure liquid preparation assembly is driven by the hydraulic driving assembly to inject high-pressure composite water plugging liquid into a well; the output end of a variable pump of the hydraulic drive assembly is connected to a hydraulic oscillator through a hydraulic oil inlet pipe, another inlet of the hydraulic oscillator is connected with a hydraulic oil tank through a hydraulic pipeline, and an outlet of the hydraulic oscillator is communicated with the inlet end of a reciprocating piston cylinder to drive a piston in the reciprocating piston cylinder to reciprocate. The device has the advantages that hydraulic oil is fed into the hydraulic oscillator through the variable pump, the hydraulic oscillator is controlled, then the main piston of the hydraulic cylinder moves reversely, continuous liquid suction and pressurized liquid drainage are achieved, pressurized composite water plugging liquid is fed into a well through the water plugging liquid distribution outlet valve, a cement truck is replaced, and the work efficiency is improved. The construction cost is reduced, and the construction quality is improved.

Description

Technical Field

[0001] The utility model relates to petroleum industry equipment, in particular to a composite water plugging and liquid dispensing device. Background Art

[0002] At present, in view of the high water content problem of heavy oil horizontal wells, according to the distribution characteristics of the pressure field and temperature field of the formation, the supporting gel + multi-stage plug variable strength composite water plugging technology is used to achieve the water plugging goal of "remote adjustment and near plugging" and control the high water content problem. The existing treatment method is: when the oil production unit is carrying out composite water plugging construction, it generally uses 2 400-type cement trucks and 1 700-type cement truck. Among them, the 400-type cement truck is 2040 yuan / shift*2 units, and the 700-type cement truck is 3256 yuan / shift (less than one shift is calculated as one shift). Therefore, the vehicle cost is high. In addition, 2 mixing tanks and tank trucks are required, and the construction period is 2-6 days. Therefore, the overall construction cost is high. Utility Model Content

[0003] The purpose of the utility model is to provide a composite water plugging and liquid dispensing device in view of the above-mentioned defects in the prior art, which adopts a hydraulic pressure-driven pump to replace a cement truck to deliver the dispensing liquid into the well, thereby reducing construction costs and improving construction quality.

[0004] The utility model discloses a composite water plugging liquid dispensing device, the technical scheme of which is as follows: comprising a high-pressure liquid dispensing assembly (1), a hydraulic drive assembly (2), a control box (3) and a base (4); the high-pressure liquid dispensing assembly (1), the hydraulic drive assembly (2) and the control box (3) are installed on the base (4); the high-pressure liquid dispensing assembly (1) is driven by the hydraulic drive assembly (2) to inject high-pressure composite water plugging liquid into the well; the hydraulic drive assembly (2) comprises a hydraulic oil tank (2.1), a hydraulic oil inlet pipe (2.2), and a control box (3). 2), a variable pump (2.4), a reciprocating piston cylinder (2.5), and a hydraulic oscillator (2.6), wherein the output end of the variable pump (2.4) is connected to the hydraulic oscillator (2.6) via a hydraulic oil inlet pipe (2.2), the other inlet of the hydraulic oscillator (2.6) is connected to the hydraulic oil tank (2.1) via a hydraulic pipeline (2.7), and the outlet of the hydraulic oscillator (2.6) is connected to the inlet end of the reciprocating piston cylinder (2.5), thereby driving the piston in the reciprocating piston cylinder (2.5) to reciprocate;

[0005] The high-pressure liquid distribution assembly (1) comprises a liquid inlet main pipe (1.1), a water inlet pipe head (1.2), a water blocking liquid distribution outlet valve (1.3), a high-pressure valve body (1.4), a liquid outlet pipe (1.5), a liquid outlet valve (1.6), and a liquid inlet valve (1.7); one end of the high-pressure valve body (1.4) is in communication with the outlet end of the reciprocating piston cylinder (2.5); the upper portion of the high-pressure valve body (1.4) is connected to the liquid outlet pipe (1.5) via the liquid outlet valve (1.6); the middle portion of the liquid outlet pipe (1.5) is provided with a water blocking liquid distribution outlet valve (1.3); the outer side of the high-pressure valve body (1.4) is connected to the liquid inlet main pipe (1.1) via the liquid inlet valve (1.7); the middle portion of the liquid inlet main pipe (1.1) is connected to the water inlet pipe head (1.2); and the composite water blocking liquid is sucked through the water inlet pipe head (1.2).

[0006] Preferably, one or more hydraulic buffer tanks (2.3) are installed on the upper part of the hydraulic oscillator (2.6).

[0007] Preferably, a piston (2.5.1) is installed in the inner cavity of the reciprocating piston cylinder (2.5), and one end of the piston (2.5.1) is connected to one end of a hydraulic cylinder main piston (2.6.1) via a piston rod (2.6.2), and the other end of the hydraulic cylinder main piston (2.6.1) is connected to another piston (2.5.1) via another piston rod (2.6.2), and the other piston (2.5.1) is located in the reciprocating piston cylinder (2.5) on the other side.

[0008] Preferably, the inlet of the variable displacement pump (2.4) is connected to the bottom of the hydraulic oil tank (2.1) through a hydraulic pipeline.

[0009] Preferably, the input end of the variable pump (2.4) is connected to the output shaft of the motor, and the variable pump (2.4) is driven to work by the motor.

[0010] The beneficial effects of the utility model are as follows: the utility model drives the variable pump to work through the motor, and the hydraulic oil is sent to the hydraulic oscillator through the variable pump. The hydraulic oil then pushes the main piston of the hydraulic cylinder to move to one side, and then pushes a piston rod to move its position, so that the piston moves and is pressurized; at the same time, the piston rod on the other side drives the piston to move in the opposite direction to form a negative pressure, thereby sucking in the composite water plugging liquid, and the liquid enters the high-pressure valve body on the other side through the water inlet pipe head and the liquid inlet main pipe. By controlling the hydraulic oscillator, the main piston of the hydraulic cylinder is moved in the opposite direction, thereby realizing continuous liquid suction and pressurized liquid discharge, and the pressurized high-pressure composite water plugging liquid is sent into the well through the water plugging liquid distribution outlet valve, and continuous circulation can realize continuous liquid injection, replacing the cement truck, reducing construction costs, and improving construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0012] Attached Figure 2 It is a working schematic diagram of the hydraulic drive assembly;

[0013] In the figure above: high-pressure liquid distribution assembly 1, hydraulic drive assembly 2, control box 3, base 4, liquid inlet main pipe 1.1, water inlet pipe head 1.2, water blocking liquid distribution outlet valve 1.3, high-pressure valve body 1.4, liquid outlet pipe 1.5, liquid outlet valve 1.6, liquid inlet valve 1.7, hydraulic oil tank 2.1, hydraulic oil inlet pipe 2.2, hydraulic buffer tank 2.3, variable pump 2.4, reciprocating piston cylinder 2.5, hydraulic oscillator 2.6. DETAILED DESCRIPTION

[0014] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0015] Example 1, reference Figure 1-Figure 2 The utility model mentions a composite water plugging liquid dispensing device, comprising a high-pressure liquid dispensing assembly 1, a hydraulic drive assembly 2, a control box 3 and a base 4, on which the high-pressure liquid dispensing assembly 1, the hydraulic drive assembly 2 and the control box 3 are installed, and the high-pressure liquid dispensing assembly 1 is driven by the hydraulic drive assembly 2 to inject high-pressure composite water plugging liquid into the well; the hydraulic drive assembly 2 comprises a hydraulic oil tank 2.1, a hydraulic oil inlet pipe 2.2, a variable pump 2.4, a reciprocating piston cylinder 2.5, and a hydraulic oscillator 2.6, the output end of the variable pump 2.4 is connected to the hydraulic oscillator 2.6 through the hydraulic oil inlet pipe 2.2, the other inlet of the hydraulic oscillator 2.6 is connected to the hydraulic oil tank 2.1 through a hydraulic pipeline 2.7, and the outlet of the hydraulic oscillator 2.6 is connected to the inlet end of the reciprocating piston cylinder 2.5, driving the piston in the reciprocating piston cylinder 2.5 to reciprocate;

[0016] The high-pressure liquid distribution assembly 1 includes a liquid inlet main pipe 1.1, a water inlet pipe head 1.2, a water-blocking liquid distribution outlet valve 1.3, a high-pressure valve body 1.4, a liquid outlet pipe 1.5, a liquid outlet valve 1.6, and a liquid inlet valve 1.7. One end of the high-pressure valve body 1.4 is connected to the outlet end of the reciprocating piston cylinder 2.5, the upper part of the high-pressure valve body 1.4 is connected to the liquid outlet pipe 1.5 through the liquid outlet valve 1.6, the middle part of the liquid outlet pipe 1.5 is provided with a water-blocking liquid distribution outlet valve 1.3, and the outer side of the high-pressure valve body 1.4 is connected to the liquid inlet main pipe 1.1 through the liquid inlet valve 1.7, the middle part of the liquid inlet main pipe 1.1 is connected to the water inlet pipe head 1.2, and the composite water-blocking liquid is sucked through the water inlet pipe head 1.2.

[0017] Wherein, a group of hydraulic buffer tanks 2.3 are installed on the upper part of the hydraulic oscillator 2.6.

[0018] In addition, refer to Figure 2The inner cavity of the reciprocating piston cylinder 2.5 mentioned in the utility model is equipped with a piston 2.5.1, and one end of the piston 2.5.1 is connected to one end of the hydraulic cylinder main piston 2.6.1 through a piston rod 2.6.2, and the other end of the hydraulic cylinder main piston 2.6.1 is connected to another piston 2.5.1 through another piston rod 2.6.2, and the other piston 2.5.1 is located in the reciprocating piston cylinder 2.5 on the other side.

[0019] The inlet of the variable displacement pump 2.4 is connected to the bottom of the hydraulic oil tank 2.1 through a hydraulic pipeline.

[0020] The input end of the variable displacement pump 2.4 is connected to the output shaft of the motor, and the variable displacement pump 2.4 is driven to work by the motor.

[0021] When the utility model is used, the composite water plugging liquid is sucked through the water inlet pipe head 1.2, the motor is started, the motor drives the variable pump 2.4 to work, the inlet of the variable pump 2.4 is connected to the bottom of the hydraulic oil tank 2.1 through the hydraulic pipeline, the hydraulic oil is sent to the hydraulic oscillator 2.6 through the variable pump 2.4, and the hydraulic oil pushes the main piston 2.6.1 of the hydraulic cylinder to move to one side, and then pushes a piston rod 2.6.2 to move position, and then the piston 2.5.1 moves and pressurizes; at the same time, the piston rod 2.6.2 on the other side The piston 2.5.1 is driven to move in the reverse direction to form negative pressure, thereby sucking in the composite water-plugging liquid. The liquid enters the high-pressure valve body 1.4 on the other side through the water inlet pipe head 1.2 and the liquid inlet main pipe 1.1. By controlling the hydraulic oscillator 2.6, the main piston 2.6.1 of the hydraulic cylinder is moved in the reverse direction. A one-way valve is arranged in the high-pressure valve body 1.4, thereby realizing continuous liquid suction and pressurized liquid discharge. The pressurized high-pressure composite water-plugging liquid is sent into the well through the water-plugging liquid distribution outlet valve 1.3. Continuous circulation can realize continuous liquid injection.

[0022] Embodiment 2, a composite water plugging liquid dispensing device mentioned in the utility model comprises a high-pressure liquid dispensing assembly 1, a hydraulic drive assembly 2, a control box 3 and a base 4, on which the high-pressure liquid dispensing assembly 1, the hydraulic drive assembly 2 and the control box 3 are installed, and the high-pressure liquid dispensing assembly 1 is driven by the hydraulic drive assembly 2 to inject the high-pressure composite water plugging liquid into the well; the hydraulic drive assembly 2 comprises a hydraulic oil tank 2.1, a hydraulic oil inlet pipe 2.2, a variable pump 2.4, a reciprocating piston cylinder 2.5, and a hydraulic oscillator 2.6, the output end of the variable pump 2.4 is connected to the hydraulic oscillator 2.6 through the hydraulic oil inlet pipe 2.2, the other inlet of the hydraulic oscillator 2.6 is connected to the hydraulic oil tank 2.1 through a hydraulic pipeline 2.7, and the outlet of the hydraulic oscillator 2.6 is connected to the inlet end of the reciprocating piston cylinder 2.5, driving the piston in the reciprocating piston cylinder 2.5 to reciprocate;

[0023] The high-pressure liquid distribution assembly 1 includes a liquid inlet main pipe 1.1, a water inlet pipe head 1.2, a water-blocking liquid distribution outlet valve 1.3, a high-pressure valve body 1.4, a liquid outlet pipe 1.5, a liquid outlet valve 1.6, and a liquid inlet valve 1.7. One end of the high-pressure valve body 1.4 is connected to the outlet end of the reciprocating piston cylinder 2.5, the upper part of the high-pressure valve body 1.4 is connected to the liquid outlet pipe 1.5 through the liquid outlet valve 1.6, the middle part of the liquid outlet pipe 1.5 is provided with a water-blocking liquid distribution outlet valve 1.3, and the outer side of the high-pressure valve body 1.4 is connected to the liquid inlet main pipe 1.1 through the liquid inlet valve 1.7, the middle part of the liquid inlet main pipe 1.1 is connected to the water inlet pipe head 1.2, and the composite water-blocking liquid is sucked through the water inlet pipe head 1.2.

[0024] The difference from Example 1 is:

[0025] Two groups of hydraulic buffer tanks 2.3 are installed on the upper part of the hydraulic oscillator 2.6 mentioned in this embodiment, which can play a better buffering role.

[0026] The above are only some preferred embodiments of the present invention. Any person skilled in the art may modify the above technical solutions or modify them into equivalent technical solutions. Therefore, any simple modification or equivalent replacement based on the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A composite water plugging liquid preparation device, characterized by: The invention comprises a high-pressure liquid distribution assembly (1), a hydraulic drive assembly (2), a control box (3) and a base (4); the high-pressure liquid distribution assembly (1), the hydraulic drive assembly (2) and the control box (3) are installed on the base (4); the high-pressure liquid distribution assembly (1) is driven by the hydraulic drive assembly (2) to inject high-pressure composite water plugging fluid into the well; the hydraulic drive assembly (2) comprises a hydraulic oil tank (2.1), a hydraulic oil inlet pipe (2.2), a variable pump (2.4), a reciprocating piston cylinder (2.5), and a hydraulic oscillator (2.6); the output end of the variable pump (2.4) is connected to the hydraulic oscillator (2.6) through the hydraulic oil inlet pipe (2.2); the other inlet of the hydraulic oscillator (2.6) is connected to the hydraulic oil tank (2.1) through a hydraulic pipeline (2.7); the outlet of the hydraulic oscillator (2.6) is connected to the inlet end of the reciprocating piston cylinder (2.5), and the piston in the reciprocating piston cylinder (2.5) is driven to reciprocate; The high-pressure liquid distribution assembly (1) comprises a liquid inlet main pipe (1.1), a water inlet pipe head (1.2), a water blocking liquid distribution outlet valve (1.3), a high-pressure valve body (1.4), a liquid outlet pipe (1.5), a liquid outlet valve (1.6), and a liquid inlet valve (1.7); one end of the high-pressure valve body (1.4) is in communication with the outlet end of the reciprocating piston cylinder (2.5); the upper portion of the high-pressure valve body (1.4) is connected to the liquid outlet pipe (1.5) via the liquid outlet valve (1.6); the middle portion of the liquid outlet pipe (1.5) is provided with a water blocking liquid distribution outlet valve (1.3); the outer side of the high-pressure valve body (1.4) is connected to the liquid inlet main pipe (1.1) via the liquid inlet valve (1.7); the middle portion of the liquid inlet main pipe (1.1) is connected to the water inlet pipe head (1.2); and the composite water blocking liquid is sucked through the water inlet pipe head (1.2).

2. The composite water plugging liquid preparation device according to claim 1 is characterized in that: One or more hydraulic buffer tanks (2.3) are installed on the upper part of the hydraulic oscillator (2.6).

3. The composite water plugging liquid preparation device according to claim 2 is characterized in that: A piston (2.5.1) is installed in the inner cavity of the reciprocating piston cylinder (2.5), and one end of the piston (2.5.1) is connected to one end of a hydraulic cylinder main piston (2.6.1) via a piston rod (2.6.2), and the other end of the hydraulic cylinder main piston (2.6.1) is connected to another piston (2.5.1) via another piston rod (2.6.2), and the other piston (2.5.1) is located in the reciprocating piston cylinder (2.5) on the other side.

4. The composite water plugging liquid preparation device according to claim 1 or 3, characterized in that: The inlet of the variable displacement pump (2.4) is connected to the bottom of the hydraulic oil tank (2.1) through a hydraulic pipeline.

5. The composite water plugging liquid preparation device according to claim 4 is characterized in that: The input end of the variable pump (2.4) is connected to the output shaft of the motor, and the variable pump (2.4) is driven to work by the motor.

Images