Petroleum drilling mud buffer metering tank device

Abstract

The utility model discloses a petroleum drilling mud buffer metering tank device which comprises a lifting support, a supporting platform, a skid-mounted frame, a buffer tank body and a skid-mounted pipeline. A liquid inlet connecting pipe is arranged at the bottom of the buffer tank body, a liquid outlet flow adjusting opening and an adjusting assembly used for adjusting the size of the liquid outlet flow adjusting opening are arranged on the buffer tank body, a liquid drainage connecting pipe used for being connected with a mud screen is installed on the outer side of the liquid outlet flow adjusting opening, and the skid-mounted pipeline comprises a first pipeline, a third pipeline and a fourth pipeline. The first pipeline, the third pipeline and the fourth pipeline share one horizontal slurry pump, and a liquid inlet of the slurry screen is communicated with the buffer tank body through a second pipeline. According to the utility model, not only can a normal operation mode between the buffer tank body and the slurry screen be realized, but also two operation modes of pumping slurry in the buffer tank body into the slurry screen by using the horizontal slurry pump and pumping back and pressurizing the grouting pipeline can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil drilling equipment, and in particular relates to an oil drilling mud liquid buffer metering tank device. Background Art

[0002] The mud buffer tank is a transfer station connecting the overhead pipe and the vibrating screen, which plays a diversified role in the drilling site work. The drilling work includes: normal drilling, drilling, circulating well washing, casing, cementing, gas testing, etc. The improved mud buffer tank can connect each process point to point, transport the mud to each work point, form a grid management operation, and meet the needs of various drilling conditions. Most mud buffer tanks have a low design height and insufficient depth. The mud outlet pipe is located at a high position and the pipe mouth has a small diameter, which leads to a lot of sand at the bottom of the mud buffer tank. In severe cases, mud flooding will occur. Since there is no sand discharge port at the bottom of the mud buffer tank, the operator needs to go down to clean the sand or flush it with high-pressure water. The sand is removed by the vibrating screen. The interior of the mud buffer tank is a confined space with the risk of toxic gas. There are safety hazards in the operation of cleaning the sand, and it is time-consuming and labor-intensive. A large amount of water flow also affects the performance of the mud. Moreover, the density of the sediment changes with the change of the bottom layer, and the adhesion of some muds is very strong. Conventional vortex flowmeters and electromagnetic flowmeters cannot work stably and reliably for a long time. Therefore, a petroleum drilling mud buffer metering tank device should be provided. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a petroleum drilling mud buffer metering tank device in view of the deficiencies in the above-mentioned prior art. The device is reasonably designed and can not only realize the normal operating mode between the buffer tank body and the mud screen, but also realize two operating modes of using a horizontal mud pump to suck the slurry in the buffer tank body into the mud screen and to back-pump and pressurize the grouting pipeline.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a petroleum drilling mud buffer metering tank device, characterized in that it includes a lifting bracket, a supporting platform arranged at the top of the lifting bracket and a skid-mounted frame installed on the supporting platform, a buffer tank body installed at the top of the skid-mounted frame and a skid-mounted pipeline arranged inside the skid-mounted frame and connected to the buffer tank body; a liquid inlet pipe for connecting to a drilling overflow pipe is arranged at the bottom of the buffer tank body, a liquid outlet flow regulating port and an adjusting component for adjusting the size of the liquid outlet flow regulating port are arranged on the buffer tank body, and the liquid outlet flow regulating port A drainage pipe for connecting with a mud screen is installed on the outer side of the buffer tank, a sensor installation hole is arranged on the top surface of the buffer tank body, a radar liquid level ranging sensor is installed in the sensor installation hole, the skid-mounted pipeline comprises a first pipeline for pumping the slurry in the buffer tank body into the mud screen, a third pipeline for pumping the slurry in the mud screen into the buffer tank body and a fourth pipeline for pumping the clear liquid in the mud screen into the buffer tank body, the first pipeline, the third pipeline and the fourth pipeline share a horizontal mud pump, and the liquid inlet of the mud screen is connected to the buffer tank body through the second pipeline.

[0005] The above-mentioned oil drilling mud buffer metering tank device is characterized in that: the first pipeline is installed with a first control valve and a fourth control valve, the third pipeline is installed with a third control valve and a fifth control valve, the fourth pipeline is installed with a sixth control valve, and the second pipeline is installed with a second control valve; the horizontal mud pump, the first control valve, the second control valve, the third control valve, the fourth control valve, the fifth control valve and the sixth control valve are all controlled by a controller, and the radar liquid level ranging sensor is connected to the input end of the controller.

[0006] The above-mentioned oil drilling mud buffer metering tank device is characterized in that an overflow pipe is arranged on the top of the buffer tank body, and the bottom end of the overflow pipe is connected to the drainage pipe.

[0007] The above-mentioned oil drilling mud buffer metering tank device is characterized in that the adjustment component includes a screw rod, a sealing plate sleeved on the screw rod and a servo motor for driving the screw rod to rotate, and the servo motor is controlled by a controller.

[0008] The above-mentioned oil drilling mud buffer metering tank device is characterized in that: guardrails are arranged on the surrounding sides of the support platform, and a height-adjustable ladder is arranged on the support platform. The top end of the ladder is fixedly mounted on the support platform, and the height of the ladder matches the height of the lifting bracket.

[0009] The above-mentioned oil drilling mud liquid buffer metering tank device is characterized in that an electrical box is installed on the top of the skid-mounted frame.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. The utility model sets a lifting bracket and a supporting platform, which together form a supporting structure for supporting and elevating the buffer tank body and the skid-mounted frame. Under the lifting action of the lifting bracket, the height of the buffer tank body can be adjusted, which helps to improve the convenience of installation of the buffer metering tank device at the drilling site.

[0012] 2. The utility model sets a liquid outlet flow regulating port on the buffer tank body, and installs a regulating component on the buffer tank body for adjusting the size of the liquid outlet flow regulating port. In actual use, when the slurry liquid level in the buffer tank body is higher than the specified value of the liquid outlet flow regulating port, the controller calculates the liquid inlet flow of the liquid inlet pipe according to the rising speed of the slurry liquid level, and compares the calculated liquid inlet flow of the liquid inlet pipe with the flow of the drilling injection flow pump. When there is a difference between the liquid inlet flow of the liquid inlet pipe and the flow of the drilling injection flow pump, the size of the liquid outlet flow regulating port is adjusted by the regulating component according to the liquid inlet flow of the liquid inlet pipe, so that the slurry liquid level height in the buffer tank body keeps the liquid level flow consistent, thereby achieving the purpose of adjusting the slurry liquid level in the buffer tank body.

[0013] 3. The utility model arranges a skid-mounted pipeline connected to the buffer tank body inside the skid-mounted frame, the skid-mounted pipeline includes a first pipeline, a third pipeline and a fourth pipeline, and the first pipeline, the third pipeline and the fourth pipeline share a horizontal mud pump, the liquid inlet of the mud screen is connected to the buffer tank body through the second pipeline, in actual use, under the action of the horizontal mud pump, the first pipeline can suck the slurry in the buffer tank body into the mud screen, the third pipeline can suck the slurry in the mud screen into the buffer tank body, and the fourth pipeline can suck the clear liquid in the mud screen into the buffer tank body. The entire skid-mounted pipeline has a compact structure and occupies a small space. The combination of the first pipeline, the second pipeline, the third pipeline and the fourth pipeline can not only realize the normal operating mode between the buffer tank body and the mud screen, but also can realize two operating modes of using the horizontal mud pump to suck the slurry in the buffer tank body into the mud screen and the grouting pipeline back-drawing and pressurizing.

[0014] 4. The utility model has reasonable design, high intelligence and is easy to promote and apply.

[0015] In summary, the utility model is reasonably designed.

[0016] The present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 for Figure 1 A-direction view.

[0019] Figure 3 It is a schematic diagram of the connection relationship between the skid-mounted frame, the buffer tank body and the skid-mounted pipeline of the utility model.

[0020] Figure 4 It is a structural schematic diagram of the mounting seat of the utility model.

[0021] Figure 5 It is the principle diagram of the skid-mounted pipeline of the utility model.

[0022] Description of reference numerals:

[0023] 1—Lifting bracket; 2—Support platform; 2-1—Guardrail;

[0024] 3—skid-mounted frame; 4—buffer tank body; 4-1—liquid inlet pipe;

[0025] 4-2—Liquid outlet flow regulating port; 4-3—Liquid discharge pipe; 4-4—Overflow pipe;

[0026] 4-5—Sensor mounting hole; 5-1—Screw rod; 5-2—Sealing plate;

[0027] 5-3—Servo motor; 6—Ladder; 7—Electric control box;

[0028] 8-1—first pipeline; 8-2—second pipeline; 8-3—third pipeline;

[0029] 8-4—the fourth pipeline; 9—mud screen; 10—horizontal mud pump;

[0030] 11—first control valve; 12—second control valve; 13—third control valve;

[0031] 14—the fourth control valve; 15—the fifth control valve; 16—the fifth control valve;

[0032] 17—Radar liquid level ranging sensor. DETAILED DESCRIPTION

[0033] like Figures 1 to 5As shown, the utility model includes a lifting bracket 1, a supporting platform 2 arranged at the top of the lifting bracket 1 and a skid-mounted frame 3 installed on the supporting platform 2, a buffer tank body 4 installed at the top of the skid-mounted frame 3 and a skid-mounted pipeline arranged inside the skid-mounted frame 3 and connected to the buffer tank body 4; a liquid inlet pipe 4-1 for connecting to a drilling overflow pipe is provided at the bottom of the buffer tank body 4, a liquid outlet flow regulating port 4-2 and an adjusting component for adjusting the size of the liquid outlet flow regulating port 4-2 are provided on the buffer tank body 4, a liquid discharge pipe 4-3 for connecting to a mud screen 9 is installed on the outer side of the liquid outlet flow regulating port 4-2, and the buffer tank body A sensor mounting hole 4-5 is provided on the top surface of the body 4, and a radar liquid level ranging sensor 17 is installed in the sensor mounting hole 4-5. The skid-mounted pipeline includes a first pipeline 8-1 for pumping the slurry in the buffer tank body 4 into the mud screen 9, a third pipeline 8-3 for pumping the slurry in the mud screen 9 into the buffer tank body 4, and a fourth pipeline 8-4 for pumping the clear liquid in the mud screen 9 into the buffer tank body 4. The first pipeline 8-1, the third pipeline 8-3 and the fourth pipeline 8-4 share a horizontal mud pump 10, and the liquid inlet of the mud screen 9 is connected to the buffer tank body 4 through the second pipeline 8-2.

[0034] In this embodiment, by setting up a lifting bracket 1 and a supporting platform 2, the lifting bracket 1 and the supporting platform 2 together form a supporting structure for supporting and elevating the buffer tank body 4 and the skid-mounted frame 3, and under the lifting action of the lifting bracket 1, the purpose of adjusting the height of the buffer tank body 4 can be achieved, which helps to improve the convenience of installation of the buffer metering tank device at the drilling site.

[0035] In this embodiment, a liquid outlet flow regulating port 4-2 is provided on the buffer tank body 4, and a regulating component for adjusting the size of the liquid outlet flow regulating port 4-2 is installed on the buffer tank body 4. In actual use, when the slurry liquid level in the buffer tank body 4 is higher than the specified value of the liquid outlet flow regulating port 4-2, the controller calculates the liquid inlet flow of the liquid inlet pipe 4-1 according to the rising speed of the slurry liquid level, and compares the calculated liquid inlet flow of the liquid inlet pipe 4-1 with the flow of the drilling injection flow pump. When there is a difference between the liquid inlet flow of the liquid inlet pipe 4-1 and the flow of the drilling injection flow pump, the size of the liquid outlet flow regulating port 4-2 is adjusted according to the liquid inlet flow of the liquid inlet pipe 4-1 by using the regulating component, so that the slurry liquid level height in the buffer tank body 4 keeps the liquid level flow consistent, thereby achieving the purpose of adjusting the slurry liquid level in the buffer tank body 4.

[0036] In this embodiment, a skid-mounted pipeline connected to the buffer tank body 4 is arranged inside the skid-mounted frame 3, and the skid-mounted pipeline includes a first pipeline 8-1, a third pipeline 8-3 and a fourth pipeline 8-4, and the first pipeline 8-1, the third pipeline 8-3 and the fourth pipeline 8-4 share a horizontal mud pump 10, and the liquid inlet of the mud screen 9 is connected to the buffer tank body 4 through the second pipeline 8-2. In actual use, under the action of the horizontal mud pump 10, the first pipeline 8-1 can suck the slurry in the buffer tank body 4 into the mud screen 9, and the third pipeline 8-3 can suck the slurry in the buffer tank body 4 into the mud screen 9. The third pipeline 8-3 can suck the slurry in the mud screen 9 into the buffer tank body 4, and the fourth pipeline 8-4 can suck the clear liquid in the mud screen 9 into the buffer tank body 4. The entire skid-mounted pipeline structure is compact and occupies a small space. The first pipeline 8-1, the second pipeline 8-2, the third pipeline 8-3 and the fourth pipeline 8-4 are combined, which can not only realize the normal operating mode between the buffer tank body 4 and the mud screen 9, but also realize the two operating modes of using the horizontal mud pump 10 to suck the slurry in the buffer tank body 4 into the mud screen 9 and the grouting pipeline back-drawing and pressurizing.

[0037] like Figure 5 As shown, in this embodiment, the first control valve 11 and the fourth control valve 14 are installed on the first pipeline 8-1, the third control valve 13 and the fifth control valve 15 are installed on the third pipeline 8-3, the sixth control valve 16 is installed on the fourth pipeline 8-4, and the second control valve 12 is installed on the second pipeline 8-2; the horizontal mud pump 10, the first control valve 11, the second control valve 12, the third control valve 13, the fourth control valve 14, the fifth control valve 15 and the sixth control valve 16 are all controlled by a controller, and the radar liquid level ranging sensor 17 is connected to the input end of the controller.

[0038] In actual use, under the automatic control of the first control valve 11, the second control valve 12, the third control valve 13, the fourth control valve 14, the fifth control valve 15 and the sixth control valve 16, automatic control of the skid-mounted pipeline can be achieved, thereby improving the intelligence level of the buffer metering tank device.

[0039] like Figure 1 and Figure 3 As shown, in this embodiment, an overflow pipe 4-4 is provided on the top of the buffer tank body 4, and the bottom end of the overflow pipe 4-4 is connected to the drain pipe 4-3.

[0040] like Figure 4 As shown, in this embodiment, the adjustment assembly includes a screw rod 5-1, a sealing plate 5-2 mounted on the screw rod 5-1, and a servo motor 5-3 for driving the screw rod 5-1 to rotate, and the servo motor 5-3 is controlled by a controller.

[0041] like Figure 1 and Figure 2 As shown, in this embodiment, a guardrail 2-1 is provided on the surrounding side of the support platform 2, and a height-adjustable ladder 6 is provided on the support platform 2. The top end of the ladder 6 is fixedly mounted on the support platform 2, and the height of the ladder 6 matches the height of the lifting bracket 1.

[0042] In this embodiment, an electrical box 7 is installed on the top of the skid-mounted frame 3 .

[0043] In actual use, during the normal operation of the buffer metering tank device, the radar liquid level ranging sensor 17 detects the rise or fall of the slurry liquid level in the buffer tank body 4 in real time. When the slurry liquid level in the buffer tank body 4 is higher than the specified value of the liquid outlet flow regulating port 4-2, the controller calculates the liquid inlet flow of the liquid inlet pipe 4-1 according to the rising speed of the slurry liquid level, and compares the calculated liquid inlet flow of the liquid inlet pipe 4-1 with the flow of the drilling injection flow pump. When there is a difference between the liquid inlet flow of the liquid inlet pipe 4-1 and the flow of the drilling injection flow pump, the size of the liquid outlet flow regulating port 4-2 is adjusted according to the liquid inlet flow of the liquid inlet pipe 4-1 using the regulating component, so that the slurry liquid level in the buffer tank body 4 keeps the liquid level flow consistent.

[0044] When the inlet flow rate of the inlet pipe 4-1 suddenly increases and exceeds the maximum flow rate of the outlet flow regulating port 4-2, and the slurry liquid level in the buffer tank body 4 rises to the set height value of the outlet flow regulating port 4-2, it is necessary to use the horizontal mud pump 10 to suck the slurry in the buffer tank body 4 into the mud screen 9. The specific process is: open the horizontal mud pump 10, the first control valve 11 and the fourth control valve 14, close the second control valve 12, the third control valve 13, the fifth control valve 15 and the sixth control valve 16, and use the horizontal mud pump 10 to suck the slurry in the buffer tank body 4 into the mud screen 9 until the slurry liquid level in the buffer tank body 4 is lower than the lowest point of the outlet flow regulating port 4-2, and the vertical distance between the slurry liquid level in the buffer tank body 4 and the lowest point of the outlet flow regulating port 4-2 meets the first set distance, then close the horizontal mud pump 10, the first control valve 11 and the third control valve 13.

[0045] When the radar liquid level ranging sensor 17 detects that the slurry liquid level in the buffer tank body 4 continues to rise and exceeds the normal fluctuation range, it is determined that the liquid flow regulating port 4-2 is blocked or the mud concentration is too viscous. The regulating component is used to fully open the liquid flow regulating port 4-2, and then the grouting pipeline is back-pressurized. The specific process is as follows:

[0046] Open the horizontal mud pump 10, the third control valve 13 and the fifth control valve 15, close the first control valve 11, the second control valve 12, the fourth control valve 14 and the sixth control valve 16, and use the horizontal mud pump 10 to pressurize the mud liquid inside the mud screen 9 and pump it back into the buffer tank body 4 to clean the liquid flow regulating port 4-2 and dilute the thick slurry in the buffer tank body 4. After that, close the horizontal mud pump 10, the third control valve 13 and the fifth control valve 15, and use the regulating component to completely close the liquid flow regulating port 4-2; open the second control valve 12 to allow the slurry in the buffer tank body 4 to flow into the mud screen 9 through the second pipeline 8-2.

[0047] In actual use, the process of cleaning the buffer tank body 4 is as follows: open the horizontal mud pump 10, the third control valve 13 and the sixth control valve 16, close the first control valve 11, the second control valve 12, the fourth control valve 14 and the fifth control valve 15, use the horizontal mud pump 10 to suck the clear liquid in the mud screen 9 into the buffer tank body 4, clean the inside of the buffer tank body 4, and then open the second control valve 12 to discharge the residual slurry in the buffer tank body 4 to the mud screen 9 through the second pipeline 8-2.

[0048] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A petroleum drilling mud buffer metering tank device, characterized in that: The invention comprises a lifting bracket (1), a supporting platform (2) arranged at the top of the lifting bracket (1), and a skid-mounted frame (3) installed on the supporting platform (2), a buffer tank body (4) installed at the top of the skid-mounted frame (3), and a skid-mounted pipeline arranged inside the skid-mounted frame (3) and connected to the buffer tank body (4); a liquid inlet pipe (4-1) for connecting to a drilling overflow pipe is arranged at the bottom of the buffer tank body (4); a liquid outlet flow regulating port (4-2) and an adjusting component for adjusting the size of the liquid outlet flow regulating port (4-2) are arranged on the buffer tank body (4); a liquid outlet pipe (4-3) for connecting to a mud screen (9) is installed on the outer side of the liquid outlet flow regulating port (4-2); and the top surface of the buffer tank body (4) is provided with a liquid outlet pipe (4-3) for connecting to a mud screen (9). A sensor mounting hole (4-5) is provided on the top, and a radar liquid level ranging sensor (17) is installed in the sensor mounting hole (4-5). The skid-mounted pipeline includes a first pipeline (8-1) for pumping slurry in the buffer tank body (4) into the mud screen (9), a third pipeline (8-3) for pumping slurry in the mud screen (9) into the buffer tank body (4), and a fourth pipeline (8-4) for pumping clear liquid in the mud screen (9) into the buffer tank body (4). The first pipeline (8-1), the third pipeline (8-3) and the fourth pipeline (8-4) share a horizontal mud pump (10), and the liquid inlet of the mud screen (9) is connected to the buffer tank body (4) through the second pipeline (8-2).

2. A petroleum drilling mud buffer metering tank device according to claim 1, characterized in that: The first pipeline (8-1) is equipped with a first control valve (11) and a fourth control valve (14), the third pipeline (8-3) is equipped with a third control valve (13) and a fifth control valve (15), the fourth pipeline (8-4) is equipped with a sixth control valve (16), and the second pipeline (8-2) is equipped with a second control valve (12); the horizontal mud pump (10), the first control valve (11), the second control valve (12), the third control valve (13), the fourth control valve (14), the fifth control valve (15) and the sixth control valve (16) are all controlled by a controller, and the radar liquid level ranging sensor (17) is connected to the input end of the controller.

3. A petroleum drilling mud buffer metering tank device according to claim 1, characterized in that: An overflow pipe (4-4) is provided on the top of the buffer tank body (4), and the bottom end of the overflow pipe (4-4) is connected to the drainage pipe (4-3).

4. A petroleum drilling mud buffer metering tank device according to claim 1, characterized in that: The adjustment component comprises a screw rod (5-1), a sealing plate (5-2) sleeved on the screw rod (5-1), and a servo motor (5-3) for driving the screw rod (5-1) to rotate, wherein the servo motor (5-3) is controlled by a controller.

5. A petroleum drilling mud buffer metering tank device according to claim 1, characterized in that: A guardrail (2-1) is arranged on the peripheral side of the support platform (2), and a height-adjustable ladder (6) is arranged on the support platform (2). The top end of the ladder (6) is fixedly mounted on the support platform (2), and the height of the ladder (6) matches the height of the lifting bracket (1).

6. A petroleum drilling mud buffer metering tank device according to claim 1, characterized in that: An electrical box (7) is installed on the top of the skid-mounted frame (3).

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