Fracturing fluid purging device for fracturing truck

Abstract

The utility model provides a fracturing fluid purging device for a fracturing truck, which relates to the technical field of fracturing, and comprises a frame and a fracturing pump, the output end of the fracturing pump is fixedly connected with a delivery pipe, the surface of the delivery pipe is respectively provided with a first valve and a second valve, the top of the frame is respectively and fixedly provided with a water pump and a fan, and the top of the frame is fixedly provided with a second valve. A flow dividing pipe is fixedly connected to the surface of the conveying pipe, cleaning liquid in the liquid storage tank is pumped into the conveying pipe to dissolve waste liquid in the conveying pipe, a draught fan is started to blow the waste liquid in the conveying pipe through an air guide pipe, the waste liquid in the conveying pipe is conveniently cleaned, and when a second valve is closed and a fifth valve is opened, the waste liquid in the conveying pipe is cleaned. Waste liquid is guided into the flow dividing pipe, the waste liquid in the flow dividing pipe can be collected through cooperation of the fixing pipe and the sewage tank, airflow in the conveying pipe can be discharged through the spiral pipe installed at one end of the flow dividing pipe, and meanwhile the waste liquid can be prevented from being blown out to pollute the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of fracturing, in particular to a fracturing fluid purging device for a fracturing truck. Background Art

[0002] Fracturing technology is one of the effective measures for increasing production in the process of oil and gas field exploitation and is widely used in major oil and gas fields. Fracturing refers to a method of forming fractures in oil and gas reservoirs by using hydraulic action during oil or gas production, also known as hydraulic fracturing. Fracturing artificially creates fractures in the formation to improve the underground flow environment of oil, increase the production of oil wells, and plays an important role in improving the bottom-hole flow conditions of oil wells, reducing interlayer differences, and improving the utilization of oil layers. During fracturing, a fracturing truck is generally used to inject high-pressure and large-displacement fracturing fluid into the well to fracture the formation and squeeze fracturing sand and proppants into the fractures.

[0003] After the operation at the fracturing construction site is completed, there will be residual waste liquid in the pipeline connected to the fracturing pump. The waste liquid contains various chemical additives, making it difficult to discharge. It can only be scattered at the operation site, increasing the construction difficulty and bringing difficulties to on-site cleaning. At the same time, when cleaning the waste liquid in the pipeline, it is necessary to prevent the waste liquid from flowing to the ground and polluting the environment. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem that the residual waste liquid in the pipeline connected to the fracturing pump contains various chemical additives, making it difficult to discharge. It can only be scattered at the operation site, increasing the construction difficulty and bringing difficulties to on-site cleaning. At the same time, when cleaning the waste liquid in the pipeline, it is necessary to prevent the waste liquid from flowing to the ground and polluting the environment. A fracturing fluid purging device for a fracturing truck is proposed.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A fracturing fluid purging device for a fracturing truck includes a frame and a fracturing pump. An oil tank is fixedly installed inside the frame, and a liquid storage tank is fixedly installed on the top of the frame. The input end of the fracturing pump is fixedly connected to the inside of the oil tank, and the output end of the fracturing pump is fixedly connected to a delivery pipe. A first valve and a second valve are respectively arranged on the surface of the delivery pipe. The first valve is close to the liquid inlet end of the delivery pipe, and the second valve is close to the liquid outlet end of the delivery pipe. A water pump and a fan are respectively fixedly installed on the top of the frame, and the water pump and the fan are respectively located on both sides of the delivery pipe. A shunt pipe is fixedly connected to the surface of the delivery pipe.

[0006] Preferably, the water inlet end of the water pump is installed inside the liquid storage tank, the water outlet end of the water pump is fixedly connected to a connecting pipe, a third valve is arranged on the surface of the connecting pipe, and the other side of the connecting pipe is fixedly connected to the surface of the delivery pipe.

[0007] Preferably, a duct is fixedly connected to the air outlet end of the fan. A fourth valve is provided on the surface of the duct, and the other side of the duct is fixedly connected to the surface of the delivery pipe door.

[0008] Preferably, one end of the duct and one end of the connecting pipe are both communicated with the inside of the delivery pipe.

[0009] Preferably, the shunt pipe is located at the top of the second valve, and a fifth valve is provided on the surface of the shunt pipe.

[0010] Preferably, the other side of the shunt pipe is fixedly connected to a spiral pipe, and the spiral pipe is in a spiral upward shape.

[0011] Preferably, one end of the surface of the shunt pipe is fixedly connected to a fixed pipe, the bottom of the fixed pipe is fixedly connected to a sewage tank, and a baffle is fixedly installed at the inner top end of the shunt pipe, and the baffle is in an inclined state.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0013] In the present utility model, the first valve controls the flow of the fracturing fluid in the delivery pipe. Closing the first valve can prevent the waste liquid in the delivery pipe from flowing back into the fuel tank. The third valve can control the opening and closing of the connecting pipe, pumping the cleaning liquid in the liquid storage tank into the delivery pipe to dissolve the waste liquid inside. The fourth valve can control the opening and closing of the duct, and the fan operates to blow the waste liquid in the delivery pipe through the duct, facilitating the cleaning of the waste liquid inside the delivery pipe.

[0014] 1. In the present utility model, the second valve can keep the delivery pipe in a closed state, and the fifth valve can control the opening and closing of the shunt pipe, guiding the waste liquid into the shunt pipe. The cooperation of the fixed pipe and the sewage tank can collect the waste liquid in the shunt pipe. The spiral pipe installed at one end of the shunt pipe can discharge the air flow inside the delivery pipe and prevent the waste liquid from being blown out to pollute the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic perspective view of the main body structure of a fracturing fluid blowing device for a fracturing truck proposed by the present utility model;

[0016] Figure 2 It is a schematic top view of the frame of a fracturing fluid blowing device for a fracturing truck proposed by the present utility model;

[0017] Figure 3 It is a schematic view of the connection structure of the shunt pipe of a fracturing fluid blowing device for a fracturing truck proposed by the present utility model;

[0018] Figure 4The present utility model provides a partial sectional structure schematic diagram of a shunt pipe of a fracturing fluid purging device for a fracturing truck.

[0019] Legend: 1. Frame; 11. Fuel tank; 12. Liquid storage tank; 2. Fracturing pump; 3. Delivery pipe; 31. First valve; 32. Second valve; 4. Water pump; 41. Connecting pipe; 42. Third valve; 5. Fan; 51. Air duct; 52. Fourth valve; 6. Shunt pipe; 61. Fifth valve; 62. Spiral pipe; 63. Fixed pipe; 64. Sewage tank; 65. Baffle plate. Specific embodiments

[0020] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0022] Embodiment 1

[0023] As Figures 1 - 4 shown, the present utility model provides a technical solution: a fracturing fluid purging device for a fracturing truck, including a frame 1 and a fracturing pump 2. A fuel tank 11 is fixedly installed inside the frame 1, and a liquid storage tank 12 is fixedly installed on the top of the frame 1. The input end of the fracturing pump 2 is fixedly connected to the inside of the fuel tank 11, and the output end of the fracturing pump 2 is fixedly connected to a delivery pipe 3. A first valve 31 and a second valve 32 are respectively provided on the surface of the delivery pipe 3. The first valve 31 is close to the liquid inlet end of the delivery pipe 3, and the second valve 32 is close to the liquid outlet end of the delivery pipe 3. A water pump 4 and a fan 5 are respectively fixedly installed on the top of the frame 1. The water pump 4 and the fan 5 are respectively located on both sides of the delivery pipe 3. A shunt pipe 6 is fixedly connected to the surface of the delivery pipe 3. The water inlet end of the water pump 4 is installed inside the liquid storage tank 12, and the water outlet end of the water pump 4 is fixedly connected to a connecting pipe 41. A third valve 42 is provided on the surface of the connecting pipe 41. The other side of the connecting pipe 41 is fixedly connected to the surface of the delivery pipe 3. The air outlet end of the fan 5 is fixedly connected to an air duct 51. A fourth valve 52 is provided on the surface of the air duct 51. The other side of the air duct 51 is fixedly connected to the surface of the delivery pipe 3. One end of the air duct 51 and one end of the connecting pipe 41 are both communicated with the inside of the delivery pipe 3.

[0024] In this embodiment, one end of the fracturing pump 2 is connected to the fuel tank 11, and the fracturing fluid inside the fuel tank 11 is pumped into the inside of the delivery pipe 3. The first valve 31 and the second valve 32 are in the open state, allowing the fracturing fluid to flow inside the delivery pipe 3. When it is necessary to clean the inside of the delivery pipe 3, the first valve 31 and the second valve 32 are closed. Subsequently, a gel breaker is added into the liquid storage tank 12. Commonly used gel breakers include potassium persulfate, ammonium persulfate, etc. An equal proportion of water is added for mixing. The third valve 42 is opened, and then the water pump 4 is started to pump the gel breaker into the inside of the delivery pipe 3 through the connecting pipe 41 to dissolve the waste liquid on the inner wall of the delivery pipe 3 and reduce the viscosity of the waste liquid. Subsequently, the third valve 42 is closed, and at the same time, the fourth valve 52 is opened, and the blower 5 is started to blow air into the inside of the delivery pipe 3 to purge the remaining waste liquid adhering to the inner wall of the delivery pipe 3, facilitating the cleaning of the inner wall of the delivery pipe 3.

[0025] Embodiment 2

[0026] As Figures 1 - 4 shown, the shunt pipe 6 is located at the top of the second valve 32. A fifth valve 61 is provided on the surface of the shunt pipe 6. The other side of the shunt pipe 6 is fixedly connected to a spiral pipe 62. The spiral pipe 62 is in a spiral upward shape. One end of the surface of the shunt pipe 6 is fixedly connected to a fixed pipe 63. The bottom of the fixed pipe 63 is fixedly connected to a sewage tank 64. A baffle 65 is fixedly installed at the inner top of the shunt pipe 6. The baffle 65 is in an inclined state.

[0027] In this embodiment, during the cleaning process of the delivery pipe 3, the second valve 32 is in the closed state. The fifth valve 61 is opened to allow the gel breaker and the waste liquid to flow into the inside of the shunt pipe 6. Due to gravity, the waste liquid flows into the fixed pipe 63 and is uniformly collected inside the sewage tank 64. When the blower 5 blows air into the inside of the delivery pipe 3, the waste liquid adhering to the inside of the delivery pipe 3 will be blown off, and the air flow is discharged through the spiral pipe 62. The spiral pipe 62 is in a spiral shape, which can prevent the air flow from carrying out some waste liquid, avoiding environmental pollution. The baffle 65 installed inside the shunt pipe 6 can block the waste liquid, causing the waste liquid to uniformly fall into the sewage tank 64 for collection. At the same time, it can prevent the air flow from directly blowing the collected waste liquid and causing waste liquid splashing.

[0028] Working principle of this embodiment: When the fracturing fluid flows inside the delivery pipe 3, the first valve 31 and the second valve 32 are in the open state. When it is necessary to clean the inside of the delivery pipe 3, the first valve 31 and the second valve 32 are closed. Subsequently, a gelling breaker and water in equal proportion are added into the liquid storage tank 12 and mixed. The third valve 42 is opened, and then the water pump 4 is started to pump the gelling breaker into the delivery pipe 3 through the connecting pipe 41 to dissolve the waste liquid on the inner wall of the delivery pipe 3. Subsequently, the third valve 42 is closed, and at the same time, the fourth valve 52 is opened, and the blower 5 is started to blow air into the delivery pipe 3 to purge the remaining waste liquid adhering to the inner wall of the delivery pipe 3. The fifth valve 61 is opened to allow the gelling breaker and the waste liquid to flow into the shunt pipe 6, and the waste liquid is uniformly collected in the sewage tank 64 through the fixed pipe 63.

[0029] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A fracturing fluid purge device for a fracturing vehicle, comprising a frame (1) and a fracturing pump (2), characterized in that: An oil tank (11) is fixedly installed inside the frame (1), a liquid storage tank (12) is fixedly installed on the top of the frame (1), an input end of the fracturing pump (2) is fixedly connected to the inside of the oil tank (11), an output end of the fracturing pump (2) is fixedly connected to a delivery pipe (3), a first valve (31) and a second valve (32) are respectively provided on the surface of the delivery pipe (3), the first valve (31) is close to one end of the liquid inlet of the delivery pipe (3), and the second valve (32) is close to one end of the liquid outlet of the delivery pipe (3), a water pump (4) and a fan (5) are respectively fixedly installed on the top of the frame (1), the water pump (4) and the fan (5) are respectively located on two sides of the delivery pipe (3), and a shunt pipe (6) is fixedly connected to the surface of the delivery pipe (3).

2. A fracturing fluid purge device for a fracturing vehicle according to claim 1, characterized in that: The water inlet end of the water pump (4) is installed inside the liquid storage tank (12), the water outlet end of the water pump (4) is fixedly connected to a connecting pipe (41), a third valve (42) is provided on the surface of the connecting pipe (41), and the other side of the connecting pipe (41) is fixedly connected to the surface of the delivery pipe (3).

3. A fracturing fluid purge device for a fracturing vehicle according to claim 1, characterized in that: The air outlet end of the fan (5) is fixedly connected to an air guide pipe (51), a fourth valve (52) is provided on the surface of the air guide pipe (51), and the other side of the air guide pipe (51) is fixedly connected to the surface of the delivery pipe (3).

4. A fracturing fluid purge device for a fracturing vehicle according to claim 3, characterized in that: One end of the air guide pipe (51) and one end of the connecting pipe (41) are both in communication with the interior of the delivery pipe (3).

5. The fracturing fluid purge device for a fracturing vehicle according to claim 1, characterized in that: The flow dividing pipe (6) is located on the top of the second valve (32), and a fifth valve (61) is provided on the surface of the flow dividing pipe (6).

6. The fracturing fluid purge device for a fracturing vehicle according to claim 1, characterized in that: The other side of the diversion pipe (6) is fixedly connected to a spiral pipe (62), and the spiral pipe (62) is in an upward spiral shape.

7. The fracturing fluid purge device for a fracturing vehicle according to claim 1, characterized in that: One end of the surface of the diverter pipe (6) is fixedly connected to a fixed pipe (63), the bottom of the fixed pipe (63) is fixedly connected to a sewage tank (64), and a baffle (65) is fixedly installed on the top of the interior of the diverter pipe (6), and the baffle (65) is in an inclined state.

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