Small molecule imbibition agent injection pretreatment device

Abstract

The utility model discloses a small-molecule imbibition agent injection pretreatment device, and relates to the technical field of tight oil reservoir exploitation. A large gear is arranged on the outer circle of the separation tank, a motor is installed on the machine frame, an output shaft of the motor is fixedly connected with a small gear, the small gear is in meshing transmission connection with the large gear, a liquid inlet pipe of the booster pump is connected with the raw material barrel, and a liquid outlet pipe of the booster pump is connected to the bottom of the separation tank through a mechanical seal. The injection pipeline is connected to the mixing tank. The device has the beneficial effects that before raw material liquid is injected into the mixing tank, impurities in raw materials are thrown to the part with the maximum diameter in the separation tank by centrifugal force through the spindle-shaped structure of the separation tank which rotates at a high speed, and the raw material liquid without the impurities is injected into the mixing tank to be mixed with water for preparation; raw material liquid is separated from impurities before being injected by adopting centrifugal force, the raw material liquid carrying the impurities does not need to be discharged, raw materials are saved, and the environment is not polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of tight oil reservoir exploitation, in particular to a small molecule imbibing agent injection pretreatment device. Background Art

[0002] Small molecule imbibition agents have excellent spontaneous imbibition effects, thereby penetrating into the micro-nano pore throats of tight oil reservoirs and improving the spontaneous imbibition recovery rate of tight oil reservoirs. Small molecule imbibition agents are composed of isopropanolamide, isopentyl polyoxyethylene ether phosphate, 2-ethylhexyl benzene sulfonate and water. Small molecule imbibition agent raw materials will produce some impurities during pipeline transportation and residues in raw material barrels. Before the raw materials are mixed with water in the mixing tank, these impurities need to be cleaned up to ensure the fracturing and penetration effects. Since small molecule imbibition agents have a certain viscosity and a strong ability to carry impurities, it is difficult to remove impurities by ordinary filtration methods. Utility Model Content

[0003] In order to solve the problem that impurities in small molecule imbibing agent raw materials are not easy to remove, the utility model provides a small molecule imbibing agent injection pretreatment device.

[0004] The technical solution provided by the utility model is: a small molecule imbibing agent injection pretreatment device, comprising a base, a booster pump is installed on the base, the upper part of the base is fixedly connected to a frame, the frame is connected to a separation tank through a bearing, the separation tank is vertically arranged, the separation tank is spindle-shaped, a large gear is provided on the outer circle of the separation tank, a motor is installed on the frame, the output shaft of the motor is fixedly connected to a small gear, the small gear and the large gear are meshed and driven, the liquid inlet pipe of the booster pump is connected to the raw material barrel, the liquid outlet pipe of the booster pump is connected to the bottom of the separation tank through a mechanical seal, the top of the separation tank is connected to the injection pipe through a mechanical seal, and the injection pipe is connected to a mixing tank.

[0005] The liquid outlet pipe is connected to the sewage pipe at the bottom of the separation tank, the injection pipe is connected to the cleaning pipe at the top of the separation tank, the cleaning pipe is connected to the tap water pipe, and valves are installed on the liquid outlet pipe, sewage pipe, injection pipe and cleaning pipe respectively.

[0006] The liquid outlet pipe is connected to a reflux pipe beside the bottom of the separation tank, a valve is installed on the reflux pipe, and the reflux pipe is connected to the upper part of the raw material barrel.

[0007] The beneficial effects of the utility model are as follows: before the raw material liquid is injected into the mixing tank, the separation tank rotates at a high speed. The spindle-shaped structure of the separation tank causes the impurities in the raw material to be thrown to the part with the largest diameter in the separation tank by centrifugal force, and the raw material liquid with impurities removed is injected into the mixing tank and mixed with water for configuration. After the injection is completed, the raw material liquid in the separation tank flows back into the raw material barrel, and then the motor is started again to clean the separation tank. Centrifugal force is used to separate the raw material liquid from the impurities before injection, and there is no need to discharge the raw material liquid carrying impurities, thereby saving raw materials and not polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0009] In the figure: 1-base, 2-frame, 3-separation tank, 4-large gear, 5-motor, 6-small gear, 7-boost pump, 71-liquid outlet pipe, 72-liquid inlet pipe, 8-drain pipe, 9-cleaning pipe, 10-injection pipe, 11-reflux pipe. DETAILED DESCRIPTION

[0010] like Figure 1 As shown, a small molecule imbibing agent injection pretreatment device includes a base 1, a booster pump 7 is installed on the base 1, the upper part of the base 1 is fixedly connected to a frame 2, the frame 2 is connected to a separation tank 3 through a bearing, the separation tank 3 is vertically arranged, the separation tank 3 is spindle-shaped, a large gear 4 is provided on the outer circle of the separation tank 3, a motor 5 is installed on the frame 2, the output shaft of the motor 5 is fixedly connected to a small gear 6, the small gear 6 is meshed and driven with the large gear 4, the liquid inlet pipe 72 of the booster pump 7 is connected to the raw material barrel, the liquid outlet pipe 71 of the booster pump 7 is connected to the bottom of the separation tank 3 through a mechanical seal, the top of the separation tank 3 is connected to the injection pipe 10 through a mechanical seal, and the injection pipe 10 is connected to the mixing tank.

[0011] The liquid outlet pipe 71 is connected to the sewage pipe 8 at the bottom of the separation tank 3, the injection pipe 10 is connected to the cleaning pipe 9 at the top of the separation tank 3, and the cleaning pipe 9 is connected to the tap water pipe. Valves are installed on the liquid outlet pipe 71, the sewage pipe 8, the injection pipe 10 and the cleaning pipe 9 respectively, so as to switch the process to achieve injection, cleaning and sewage discharge.

[0012] The liquid outlet pipe 71 is connected to a reflux pipe 11 at the bottom of the separation tank 3 , a valve is installed on the reflux pipe 11 , and the reflux pipe 11 is connected to the upper part of the raw material barrel.

[0013] Before the raw material liquid is injected into the mixing tank, the raw material liquid passes through the high-speed rotating separation tank 3. The spindle-shaped structure of the separation tank 3 allows the impurities in the raw material to be thrown to the largest diameter part of the separation tank 3 by centrifugal force. The raw material liquid with impurities removed is injected into the mixing tank and mixed with water for configuration. After the injection is completed, the raw material liquid in the separation tank 3 flows back into the raw material barrel, and then the motor 5 is started again to clean the separation tank 3. Centrifugal force is used to separate the raw material liquid from the impurities before injection, and there is no need to discharge the raw material liquid carrying impurities, which saves raw materials and does not pollute the environment.

Claims

1. A small molecule imbibing agent injection pretreatment device, comprising a base (1), characterized in that: A booster pump (7) is installed on the base (1). The upper part of the base (1) is fixedly connected to the frame (2). The frame (2) is connected to a separation tank (3) via a bearing. The separation tank (3) is arranged vertically and is spindle-shaped. A large gear (4) is provided on the outer circle of the separation tank (3). A motor (5) is installed on the frame (2). The output shaft of the motor (5) is fixedly connected to a small gear (6). The small gear (6) is meshed and connected to the large gear (4). The liquid inlet pipe (72) of the booster pump (7) is connected to the raw material barrel. The liquid outlet pipe (71) of the booster pump (7) is connected to the bottom of the separation tank (3) via a mechanical seal. The top of the separation tank (3) is connected to an injection pipe (10) via a mechanical seal. The injection pipe (10) is connected to a mixing tank.

2. A small molecule imbibing agent injection pretreatment device according to claim 1, characterized in that: The liquid outlet pipe (71) is connected to a sewage pipe (8) at the bottom of the separation tank (3), the injection pipe (10) is connected to a cleaning pipe (9) at the top of the separation tank (3), the cleaning pipe (9) is connected to a tap water pipe, and valves are installed on the liquid outlet pipe (71), the sewage pipe (8), the injection pipe (10) and the cleaning pipe (9), respectively.

3. A small molecule imbibing agent injection pretreatment device according to claim 1, characterized in that: The liquid outlet pipe (71) is connected to a reflux pipe (11) at the bottom of the separation tank (3). A valve is installed on the reflux pipe (11), and the reflux pipe (11) is connected to the upper part of the raw material barrel.

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