Oilfield water injection flow-backward-preventing type flow dividing connecting device

Abstract

The utility model discloses an oil field water injection anti-backflow type flow dividing connecting device, and relates to the technical field of oil field exploitation. The top of the water inlet pipe is provided with a water inlet, the bottom of the water inlet pipe is fixedly communicated with two shunting pipes, the bottoms of the two shunting pipes are provided with water outlets, the two water outlets are fixedly communicated with a circular pipe, the bottom of the circular pipe is hinged with a pipe cover, and a shunting mechanism for shunting is arranged in the water inlet pipe. And a prevention mechanism for preventing backflow is arranged on the circular pipe. The anti-backflow prevention mechanism is arranged in the round pipe, so that the problem of backflow when the pressure intensity in an oil field exceeds the water pressure is avoided; by arranging a water inlet pipe, a water inlet, a flow dividing pipe and a water outlet, water enters the water inlet pipe from the water inlet, is divided by the flow dividing pipe, flows into the round pipe from the water outlet, and flows into the round pipe from the water outlet; and the diversion design is beneficial to improving the water injection efficiency and the overall efficiency of oilfield exploitation.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield exploitation, and particularly relates to an anti-backflow type shunt connection device for oilfield water injection. Background Technique

[0002] Using water injection equipment to inject water that meets the quality requirements from an injection well into the oil layer to maintain the oil layer pressure, this process is called oilfield water injection. Oilfield water injection is one of the important means to supplement energy to the formation and improve the oil recovery rate during the oilfield development process. The level of the management technology of injection wells determines the quality of oilfield development effects and also determines the length of the oilfield development life.

[0003] However, the shunt connection device for oilfield water injection generally does not have an anti-backflow function. Continuously injecting water into the oilfield will cause the pressure in the oilfield to continuously increase. When the pressure in the oilfield exceeds the water pressure, the problem of backflow is likely to occur. Therefore, this application document provides an anti-backflow type shunt connection device for oilfield water injection. Content of the Utility Model

[0004] The utility model specifically adopts the following technical solutions to achieve the above purposes:

[0005] An anti-backflow type shunt connection device for oilfield water injection includes an inlet pipe. An inlet is configured at the top of the inlet pipe. Two shunt pipes are fixedly communicated with the bottom of the inlet pipe. Outlets are configured at the bottoms of the two shunt pipes. A circular pipe is fixedly communicated with the two outlets. A pipe cover is hinged to the bottom of the circular pipe. A shunt mechanism for shunting is arranged in the inlet pipe, and an anti-backflow prevention mechanism is arranged on the circular pipe.

[0006] Further, a first shunt groove and a second shunt groove are configured in the inlet pipe.

[0007] Further, the first shunt groove and the second shunt groove are communicated with each other, and the second shunt groove is communicated with the two outlets.

[0008] Further, the shunt mechanism includes a round rod fixedly installed in the second shunt groove. A shunt block is rotatably connected to the round rod. Shunt plates are fixedly installed at both ends of the shunt block.

[0009] Further, one side of the shunt block is parallel to the side of the second shunt groove and the width of the shunt plate is greater than the width of the shunt block.

[0010] Further, the anti-backflow prevention mechanism includes a fixing plate fixed on the pipe cover and a mounting block fixed on the outer side of the circular pipe. A rotating plate is rotatably connected between the fixing plates, and the other end of the rotating plate is rotatably connected to a sliding block, and the sliding block slides on the mounting block.

[0011] Further, a push rod is fixed on the slider, and the other end of the push rod is fixed with a sliding plate, and the sliding plate slides on the mounting block.

[0012] Further, a spring is fixedly installed between the other end of the sliding plate and the mounting block.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. By arranging a prevention mechanism for preventing backflow in the circular pipe, the present utility model avoids the problem of backflow when the pressure in the oil field exceeds the water pressure; ensures stable operating performance under various working conditions, and reduces maintenance costs and downtime.

[0015] 2. By arranging a water inlet pipe, a water inlet, a shunt pipe and a water outlet, the present utility model enables water to enter the water inlet pipe from the water inlet, be shunted by the shunt pipe, and flow into the circular pipe from the water outlet. The shunt design helps to improve the water injection efficiency and the overall efficiency of oil field exploitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a partial three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 3 is a three-dimensional structural schematic diagram of the shunt mechanism of the present utility model;

[0019] Figure 4 is a three-dimensional structural schematic diagram of the prevention mechanism of the present utility model;

[0020] Reference numerals: 1, water inlet pipe; 2, water inlet; 3, shunt pipe; 4, water outlet; 5, circular pipe; 6, pipe cover; 7, shunt mechanism; 701, round rod; 702, shunt block; 703, shunt plate; 8, prevention mechanism; 801, fixing plate; 802, mounting block; 803, rotating plate; 804, slider; 805, push rod; 806, sliding plate; 807, spring; 9, first shunt groove; 10, second shunt groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0022] The present application provides an anti-backflow shunt connection device for oil field water injection, mainly used to solve the problem that backflow is likely to occur when the pressure in the oil field exceeds the water pressure, and provides the following technical solutions, which will be described in detail below:

[0023] Example 1:

[0024] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, in some embodiments, it includes a water inlet pipe 1. The top of the water inlet pipe 1 is configured with a water inlet 2. Two shunt pipes 3 are fixedly communicated with the bottom of the water inlet pipe 1. The bottoms of the two shunt pipes 3 are configured with water outlets 4. Two water outlets 4 are fixedly communicated with a circular pipe 5. A pipe cover 6 is hinged to the bottom of the circular pipe 5. A shunt mechanism 7 for shunting is arranged in the water inlet pipe 1. A prevention mechanism 8 for preventing backflow is arranged on the circular pipe 5; the prevention mechanism 8 includes a fixing plate 801 fixed on the pipe cover 6 and a mounting block 802 fixed on the outer side of the circular pipe 5. A rotating plate 803 is rotatably connected between the fixing plates 801, and the other end of the rotating plate 803 is rotatably connected with a slider 804. The slider 804 slides on the mounting block 802; a push rod 805 is fixed on the slider 804, and the other end of the push rod 805 is fixed with a sliding plate 806. The sliding plate 806 slides on the mounting block 802; a spring 807 is fixedly installed between the other end of the sliding plate 806 and the mounting block 802.

[0025] Specifically: By arranging the prevention mechanism 8 for preventing backflow in the circular pipe 5, it avoids the problem of backflow when the pressure in the oil field exceeds the water pressure; ensures stable operating performance under various working conditions, reduces maintenance costs and downtime, and by arranging the water inlet pipe 1, the water inlet 2, the shunt pipes 3 and the water outlets 4, the water entering the water inlet pipe 1 from the water inlet 2 is shunted by the shunt pipes 3 and flows into the circular pipe 5 from the water outlets 4. The shunt design helps to improve the water injection efficiency and the overall efficiency of oil field exploitation.

[0026] The working principle here is as follows: Water enters the inlet pipe 1 from the water inlet 2. The water inlet 2 is located at the top of the inlet pipe 1 to ensure that water can smoothly enter the inlet pipe 1. Two shunt pipes 3 are connected to the bottom of the inlet pipe 1. The function of these shunt pipes 3 is to divide the incoming water flow into two directions. Each shunt pipe 3 has a water outlet 4 at the bottom. Through these water outlets 4, the water flow enters the circular pipe 5. The water outlet 4 is fixed at the bottom of the shunt pipe 3 to ensure that the water flow enters the circular pipe 5 from the correct position. Under the action of the impact force and gravity of the water, the rotating plate 803 on the fixed plate 801 moves, and then the slider 804 at one end of the rotating plate 803 slides on the mounting block 802, further driving the push rod 805 and the sliding plate 806 to slide on the mounting block 802, compressing the spring 807. Under the elastic force of the spring 807, the pipe cover 6 will be opened, allowing the water to flow into the oil field; when the pressure in the oil field exceeds the water pressure, first, the spring 807 resets under the action of the elastic force, driving the push rod 805, the sliding plate 806, the pulley, and the rotating rod to reset. Finally, in cooperation with the pressure in the oil field, the pipe cover 6 is closed to ensure that water flows into the oil field unidirectionally under normal operating conditions without backflow or countercurrent; to avoid the problem of backflow when the pressure in the oil field exceeds the water pressure; to ensure stable operating performance under various working conditions, reducing the maintenance cost and downtime.

[0027] Embodiment 2:

[0028] The solution in Embodiment 1 will be further introduced below in combination with the specific working mode. See the following description for details:

[0029] As Figure 1 、 Figure 2 、 Figure 3As shown, in some embodiments, a first flow dividing groove 9 and a second flow dividing groove 10 are formed in the water inlet pipe 1; the first flow dividing groove 9 and the second flow dividing groove 10 communicate with each other, and the second flow dividing groove 10 communicates with two water outlets 4; the flow dividing mechanism 7 includes a round rod 701 fixedly installed in the second flow dividing groove 10, a flow dividing block 702 is rotatably connected to the round rod 701, and flow dividing plates 703 are fixedly installed at both ends of the flow dividing block 702; one side of the flow dividing block 702 is parallel to the side of the second flow dividing groove 10 and the width of the flow dividing plate 703 is greater than the width of the flow dividing block 702. The working principle here is as follows: The inside of the water inlet pipe 1 contains the first flow dividing groove 9 and the second flow dividing groove 10. These two flow dividing grooves are a structure designed inside the water inlet pipe 1; the first flow dividing groove 9 and the second flow dividing groove 10 communicate with each other, which means that water flow can flow from the first flow dividing groove 9 to the second flow dividing groove 10; the second flow dividing groove 10 is connected to two water outlets 4. These water outlets 4 are the key points where the water flow leaves the system, and they are connected through the second flow dividing groove 10 to ensure that the water flow enters these water outlets 4 from the correct position; the flow dividing mechanism 7 includes a round rod 701 fixedly installed in the second flow dividing groove 10; a rotatable flow dividing block 702 is connected to the round rod 701. These flow dividing blocks 702 are components that can rotate around the round rod 701, and their rotation may be controlled by the pressure of the water flow or the system design; flow dividing plates 703 are fixed at both ends of each flow dividing block 702. The function of these flow dividing plates 703 is to guide the water flow to ensure that the water flow is divided into different outlets or pipes in the correct way; when the water flow passes through the right flow dividing plate 703, because the width of the flow dividing plate 703 is greater than the width of the flow dividing block 702, the impact force and gravity of the water flow will hit the flow dividing plate 703, causing the flow dividing block 702 to rotate, and then making the flow dividing block 702 close to the right side, so that the water flow flows through the left flow dividing block 702. Repeating this way, the flow dividing block 702 rotates left and right, which helps to improve the water injection efficiency and the overall efficiency of oilfield exploitation.

[0030] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oilfield water injection anti-backflow type diversion connection device, comprising a water inlet pipe (1), characterized in that: The water inlet pipe (1) is provided with a water inlet (2) at the top, and two diversion pipes (3) are fixedly connected at the bottom of the water inlet pipe (1). The two diversion pipes (3) are provided with water outlets (4) at the bottom, and the two water outlets (4) are fixedly connected with a circular pipe (5). A pipe cover (6) is hinged at the bottom of the circular pipe (5). A diversion mechanism (7) for diversion is provided inside the water inlet pipe (1), and a prevention mechanism (8) for preventing backflow is provided on the circular pipe (5).

2. The oilfield water injection anti-backflow type diversion connection device according to claim 1, characterized in that: A first diversion groove (9) and a second diversion groove (10) are constructed in the water inlet pipe (1).

3. The oilfield water injection anti-backflow type diversion connection device according to claim 2, characterized in that: The first diverter groove (9) and the second diverter groove (10) are in communication with each other, and the second diverter groove (10) and the two water outlets (4) are in communication with each other.

4. The oilfield water injection anti-backflow type diversion connection device according to claim 2, characterized in that: The diversion mechanism (7) comprises a round rod (701) fixedly mounted in the second diversion slot (10), a diversion block (702) being rotatably connected to the round rod (701), and diversion plates (703) being fixedly mounted at both ends of the diversion block (702).

5. The oilfield water injection anti-backflow type diversion connection device according to claim 4, characterized in that: One side of the diverter block (702) is parallel to the side of the second diverter slot (10), and the width of the diverter plate (703) is greater than the width of the diverter block (702).

6. The oilfield water injection anti-backflow type flow diversion connection device according to claim 1, characterized in that: The prevention mechanism (8) comprises a fixing plate (801) fixed on the tube cover (6) and a mounting block (802) fixed on the outside of the circular tube (5); a rotating plate (803) is rotatably connected between the fixing plates (801) and a sliding block (804) is rotatably connected at the other end of the rotating plate (803); and the sliding block (804) slides on the mounting block (802).

7. The oilfield water injection anti-backflow type flow diversion connection device according to claim 6, characterized in that: A push rod (805) is fixed on the sliding block (804), and a slide plate (806) is fixed on the other end of the push rod (805), and the slide plate (806) slides on the mounting block (802).

8. The oilfield water injection anti-backflow type flow diversion connection device according to claim 7, characterized in that: A spring (807) is fixedly installed between the other end of the slide plate (806) and the mounting block (802).

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