Well cementing truck with compatible well flushing function

Abstract

The utility model relates to mechanical engineering technical field discloses the well cementing vehicle of compatible well washing function, including the vehicle body, the rear end of vehicle body is installed with the mixed slurry jar, the outer wall left side of mixed slurry jar is installed with three cylinder plunger pump, the left side of three cylinder plunger pump is installed with pressure gauge, the front end of vehicle body is installed with high pressure pump, the output of high pressure pump is fixedly connected with high pressure basket filter, the outer wall other end of high pressure basket filter is installed with cyclone sand remover, the bottom rear side fixed connection of cyclone sand remover has the measuring jar. In the utility model, the well cementing and well washing function are integrated in single equipment, high pressure grouting and fluid purification double functions are realized through the three cylinder pump of transfer case drive, the quick switching mechanism is completed well cementing and well washing mode conversion, through the combination filter system, can improve oil removal rate, and the full -enclosed sewage treatment system, realizes the operation zero discharge, reduces manpower and material cost.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, and in particular to a cementing truck with compatible well washing function. Background Technology

[0002] Cementing trucks and well-washing trucks are two crucial special vehicles used in oilfield operations. Cementing trucks are mainly used to inject cement slurry into the wellbore to seal the annular space between the casing and the well wall. Well-washing trucks are used to clean water injection wells in oilfields by injecting cleaning fluid into the well to remove rock cuttings and mud impurities from the wellbore, creating favorable conditions for cementing operations or for subsequent cleaning.

[0003] In oilfield operations, separate cementing trucks and well-washing trucks are used. However, both vehicles need to arrive at the site simultaneously, which makes coordination difficult. Any malfunction or delay of either vehicle will affect the entire operation progress. In well sites with limited space, the simultaneous operation of two large vehicles will be very crowded, affecting operational safety and efficiency. It is necessary to purchase two high-value special vehicles with single functions, which requires huge investment. In addition, each vehicle requires independent operators and maintenance, which increases labor and material costs. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a cementing truck with compatible well washing function, which aims to improve the problem that the existing technology requires two vehicles to be operated and maintained independently, which increases labor and material costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cementing truck with compatible well washing function, including a vehicle body, a mixing tank installed at the rear end of the vehicle body, a three-cylinder plunger pump installed on the left side of the outer wall of the mixing tank, and a pressure gauge installed on the left side of the three-cylinder plunger pump.

[0006] As a further description of the above technical solution:

[0007] A high-pressure pump is installed at the front end of the vehicle body. A high-pressure basket filter is fixedly connected to the output end of the high-pressure pump. A cyclone separator is installed at the other end of the outer wall of the high-pressure basket filter. A metering tank is fixedly connected to the rear side of the bottom end of the cyclone separator. A water pump is installed on the right side of the bottom end of the metering tank. The output end of the water pump is fixedly connected to the top end of a three-cylinder plunger pump.

[0008] As a further description of the above technical solution:

[0009] A water tank is installed at the rear of the vehicle body, and a valve is installed at the left end of the water tank.

[0010] As a further description of the above technical solution:

[0011] A density meter is installed at the rear end of the mixing tank, and the density meter adopts a cylindrical design.

[0012] As a further description of the above technical solution:

[0013] A rear railing is fixedly connected to the top rear side of the outer wall of the vehicle body, and a side railing is fixedly connected to the top right side of the outer wall of the vehicle body.

[0014] As a further description of the above technical solution:

[0015] A slag discharge trough is installed on the right end of the outer wall of the cyclone desander, and the slag discharge trough adopts a cylindrical design.

[0016] This utility model has the following beneficial effects:

[0017] In this invention, cementing and well washing functions are integrated into a single device. A three-cylinder pump driven by a transfer case achieves dual functions of high-pressure grouting and fluid purification. A quick switching mechanism completes the conversion between cementing and well washing modes. Through a combined filtration system, the oil removal rate can be improved. The fully enclosed sewage treatment system achieves zero discharge during operation, reducing labor and material costs. Attached Figure Description

[0018] Figure 1 This is a front view of the cementing truck with compatible well-washing function proposed in this utility model;

[0019] Figure 2 This is a perspective view of the cementing truck with compatible well-washing function proposed in this utility model;

[0020] Figure 3 This is a side view of the cementing truck with compatible well-washing function proposed in this utility model;

[0021] Figure 4 This is a partial structural diagram of the cementing truck with compatible well-washing function proposed in this utility model;

[0022] Figure 5 This is a partial structural diagram of the cementing truck with compatible well-washing function proposed in this utility model.

[0023] Legend:

[0024] 1. Vehicle body; 2. Mixing tank; 3. Densitometer; 4. Three-cylinder plunger pump; 5. Pressure gauge; 6. High-pressure pump; 7. High-pressure basket filter; 8. Cyclone desander; 9. Slag discharge chute; 10. Metering tank; 11. Water pump; 12. Water tank; 13. Valve; 14. Rear fence; 15. Side fence. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 2 , Figure 4 and Figure 5 An embodiment of this utility model provides a cementing truck with compatible well washing function, including a vehicle body 1, a mixing tank 2 installed at the rear end of the vehicle body 1, a three-cylinder plunger pump 4 installed on the left side of the outer wall of the mixing tank 2, a pressure gauge 5 installed on the left side of the three-cylinder plunger pump 4, a high-pressure pump 6 installed at the front end of the vehicle body 1, a high-pressure basket filter 7 fixedly connected to the output end of the high-pressure pump 6, a cyclone desander 8 installed at the other end of the outer wall of the high-pressure basket filter 7, a metering tank 10 fixedly connected to the rear side of the bottom end of the cyclone desander 8, a water pump 11 installed on the right side of the bottom end of the metering tank 10, the output end of the water pump 11 fixedly connected to the top end of the three-cylinder plunger pump 4, a water tank 12 installed at the rear end of the vehicle body 1, a valve 13 installed on the left end of the water tank 12, and a slag discharge trough 9 installed on the right end of the outer wall of the cyclone desander 8, the slag discharge trough 9 adopting a cylindrical design;

[0027] Specifically, in cementing operations, the mixing system prepares cement slurry, which is monitored in real time by the density meter 3. The mixing tank 2 injects the mixed cement slurry into the wellbore through the three-cylinder plunger pump 4. Then, clean water from the water tank 12 replaces the residual cement slurry in the well, and the completion of grouting is determined by monitoring pressure changes. In well washing operations, the dual power systems (vehicle platform diesel engine and chassis engine) work together to ensure power redundancy, and the stirring system in the metering tank 10 ensures that the well washing fluid is mixed evenly. The metering tank 10 also supplies fluid to the three-cylinder plunger pump 4. After pressurization, the three-cylinder plunger pump 4 injects the well washing fluid into the wellbore. The high-pressure pump 6 drives the well washing fluid circulation. The backflow fluid in the wellbore is treated by the high-pressure basket filter 7 and the cyclone desander 8 in the multi-stage filtration system. The qualified fluid is reinjected into the formation. At the same time, the backflow fluid is filtered and returned to the metering tank 10 to achieve circulation. Finally, the mechanism can quickly switch between cementing and well washing modes. The combined filtration system improves the oil removal rate, and the fully enclosed sewage treatment system achieves zero discharge during operation, which can also reduce labor and material costs.

[0028] Reference Figure 1 , Figure 2 and Figure 3 A density meter 3 is installed at the rear end of the mixing tank 2. The density meter 3 adopts a cylindrical design. The rear railing 14 is fixedly connected to the top rear side of the outer wall of the vehicle body 1. The side railing 15 is fixedly connected to the top right side of the outer wall of the vehicle body 1.

[0029] Specifically, the mixing tank 2 has a densitometer 3 at the rear end. The densitometer 3 can monitor the density of the slurry inside the mixing tank 2 in real time to ensure that the slurry meets the usage requirements. The rear railing 14 is installed on the rear side of the vehicle body 1 and the side railing 15 is installed on the right side to prevent personnel from accidentally falling when working on the top of the vehicle body 1. The rear railing 14 and the side railing 15 work together to ensure the safety and stability of the vehicle body 1 during use.

[0030] Working principle: In cementing operations, the slurry mixing system prepares cement slurry, which is monitored in real time by the density meter 3. The slurry mixing tank 2 injects the mixed cement slurry into the wellbore through the three-cylinder plunger pump 4. Then, the clean water in the water tank 12 replaces the residual cement slurry in the well. At the same time, the completion of grouting is judged by monitoring the pressure change. In well washing operations, the dual power system (vehicle platform diesel engine and chassis engine) works together to ensure power redundancy. The stirring system in the metering tank 10 ensures that the well washing fluid is mixed evenly. The metering tank 10 also supplies fluid to the three-cylinder plunger pump 4. After being pressurized, the three-cylinder plunger pump 4 injects the well washing fluid into the wellbore. The high-pressure pump 6 drives the well washing fluid to circulate. The backflow fluid in the wellbore is treated by the high-pressure basket filter 7 and the cyclone desander 8 in the multi-stage filtration system. The qualified fluid is reinjected into the formation. At the same time, the backflow fluid is filtered and returned to the metering tank 10 to achieve circulation. Finally, the rapid switching mechanism is realized to complete the conversion between cementing and well washing modes. Through the combined filtration system, the oil removal rate is improved, and the fully enclosed sewage treatment system achieves zero discharge during operation, reducing labor and material costs.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cementing truck compatible with well washing function, including a vehicle body (1), characterized in that: A mixing tank (2) is installed at the rear end of the vehicle body (1). A three-cylinder plunger pump (4) is installed on the left side of the outer wall of the mixing tank (2). A pressure gauge (5) is installed on the left side of the three-cylinder plunger pump (4). A high-pressure pump (6) is installed at the front end of the vehicle body (1). A high-pressure basket filter (7) is fixedly connected to the output end of the high-pressure pump (6). A cyclone separator (8) is installed at the other end of the outer wall of the high-pressure basket filter (7). A metering tank (10) is fixedly connected to the rear side of the bottom end of the cyclone separator (8). A water pump (11) is installed on the right side of the bottom end of the metering tank (10). The output end of the water pump (11) is fixedly connected to the top end of the three-cylinder plunger pump (4). A slag discharge trough (9) is installed on the right side of the outer wall of the cyclone separator (8). The slag discharge trough (9) adopts a cylindrical design.

2. The cementing truck with compatible well-washing function according to claim 1, characterized in that: A water tank (12) is installed at the rear end of the vehicle body (1), and a valve (13) is installed at the left end of the water tank (12).

3. The cementing truck with compatible well-washing function according to claim 1, characterized in that: A density meter (3) is installed at the rear end of the mixing tank (2), and the density meter (3) adopts a cylindrical design.

4. The cementing truck with compatible well-washing function according to claim 1, characterized in that: The rear railing (14) is fixedly connected to the top rear side of the outer wall of the vehicle body (1), and the side railing (15) is fixedly connected to the top right side of the outer wall of the vehicle body (1).

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