Automatic suction device for drilling mud

Abstract

The utility model discloses an automatic suction device for drilling mud, which relates to the technical field of drilling mud treatment and comprises a mud bin, an anti-explosion vortex pump, an anti-explosion control box, a bottom frame and a top frame, a liquid inlet pipe is fixed at the rear end of the mud bin, a primary filter is mounted at the top end of the mud bin, and a secondary filter is mounted at the bottom end of the mud bin. And the slurry bin is connected with the main air suction pipeline through the primary filter. According to the automatic suction device for the drilling mud, the mud gushing out in drilling operation is sucked and collected in a vacuum mode, the collection amount is large, the efficiency is high, potential safety hazards caused by the fact that a table top is slippery due to a large amount of mud on the periphery of a rotary table are reduced, the collected mud is recycled, mud waste is reduced, cost is saved, the vacuum suction device is highly integrated, a PLC control circuit is adopted, and operation is convenient. The device is high in automation degree, safe, reliable, light in weight, small in occupied area and convenient to install and use on site, and the upper frame and the lower frame are fixedly connected through lug plates and pins and convenient to detach and transport separately.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling mud treatment, in particular to an automatic drilling mud suction device. Background Art

[0002] Tripping out the drill pipe is an important process in the oil drilling process. During the drilling operation, the mud in the drill pipe will gush out from the drill pipe joint. In order to reduce the mud gushing, a spray box is currently used to cover the drill pipe joint to reduce the mud gushing.

[0003] Disadvantages of the existing technology:

[0004] 1. Due to the limited volume of the spray box, a large amount of mud is still sprayed around the turntable, which is muddy and slippery, increasing the safety risk around the turntable.

[0005] 2. The mud sprayed around the turntable is not easy to clean and requires manual cleaning or water washing, which is inefficient and increases the labor intensity of workers.

[0006] 3. The mud collected by manual cleaning or water washing causes mud pollution and can only be discharged into the circular well and then discarded, resulting in the loss of the mud entering the well. Therefore, we propose an automatic suction device for drilling mud to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide an automatic drilling mud suction device to solve the problems raised in the above background technology.

[0008] To achieve the above purpose, the utility model provides the following technical solutions: an automatic drilling mud suction device, including a mud bin, an explosion-proof vortex pump, an explosion-proof control box, a bottom frame and a top frame:

[0009] A liquid inlet pipe is fixed at the rear end of the mud bin, and the liquid inlet pipe is connected to the drill pipe blowout prevention box through an external pipeline. A primary filter is installed at the top of the mud bin, and the mud bin is connected to the main suction pipeline through the primary filter. A manhole is opened at the left end of the mud bin, and a shielding cover is arranged on the outside of the manhole. A drain pipe is connected to the bottom end of the mud bin, and a drain valve is installed inside the drain pipe. A liquid level switch is installed on the internal top wall of the mud bin, and the mud bin is fixed on the bottom frame.

[0010] The top of the bottom frame is fixedly connected to the top frame through ear plates and pins, and the top front end of the top frame is equipped with a No. 1 separator and a No. 2 separator, the interior of the No. 1 separator is equipped with a secondary filter, the interior of the No. 2 separator is equipped with a tertiary filter, and the bottom ends of the No. 1 separator and the No. 2 separator are both equipped with separator drain ports;

[0011] A pressure gauge is installed on the pipeline at the rear end of the No. 2 separator, and a relief valve is installed below the pressure gauge. The No. 2 separator is connected to an explosion-proof vortex pump through a pipeline, and an exhaust port is fixed at the output end of the explosion-proof vortex pump.

[0012] Preferably, the upper and lower sections of the main air intake pipeline are connected by a flange, and the lower section of the main air intake pipeline is connected to the primary filter.

[0013] Preferably, the interior of the secondary filter is penetrated by the top end of the main air intake line.

[0014] Preferably, a secondary air intake line runs through the interior of the three-stage filter.

[0015] Preferably, the No. 2 separator is connected to the No. 1 separator via a secondary suction line.

[0016] Preferably, a control valve is installed inside the separator drain port.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the automatic drilling mud suction device:

[0018] 1. The mud gushing out during the drilling operation is vacuumed and collected, with large collection volume and high efficiency, reducing the safety hazard caused by a large amount of mud making the table slippery around the turntable.

[0019] 2. The collected mud is recycled, which reduces mud waste and saves costs.

[0020] 3. The vacuum suction device is highly integrated and adopts PLC control circuit, which is highly automated, safe and reliable.

[0021] 4. It is light in weight and occupies a small area, which is convenient for on-site installation and use. The upper and lower frames are fixedly connected by ear plates and pins, which is convenient for disassembly and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the first axial side structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the second axis side structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the first axial side section structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the third axis side structure of the utility model;

[0026] Figure 5 It is a schematic diagram of the second axial side section structure of the utility model.

[0027] In the figure: 1. Liquid inlet pipe; 2. Mud bin; 3. Primary filter; 4. Separator No. 1; 5. Separator No. 2; 6. Explosion-proof vortex pump; 7. Exhaust port; 8. Separator drain port; 9. Drain pipe; 10. Drain valve; 11. Unloading valve; 12. Pressure gauge; 13. Secondary filter; 14. Third-stage filter; 15. Explosion-proof control box; 16. Main suction pipeline; 17. Manhole; 18. Liquid level switch; 19. Shielding cover; 20. Bottom frame; 21. Top frame; 22. Auxiliary suction pipeline. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 5 The utility model provides a technical solution: an automatic drilling mud suction device, including a liquid inlet pipe 1, a mud bin 2, a primary filter 3, a No. 1 separator 4, a No. 2 separator 5, an explosion-proof vortex pump 6, an exhaust port 7, a separator discharge port 8, a discharge pipe 9, a discharge valve 10, an unloading valve 11, a pressure gauge 12, a secondary filter 13, a tertiary filter 14, an explosion-proof control box 15, a main suction pipeline 16, a manhole 17, a liquid level switch 18, a shielding cover 19, a bottom frame 20, a top frame 21 and an auxiliary suction pipeline 22;

[0030] The drainage pipe 9 guides the mud into the elevated tank through an external pipeline and enters the mud circulation system.

[0031] from Figure 1-5 It can be seen that the device is composed of an upper and lower structure, the bottom frame 20 and the top frame 21 are welded by national standard square tubes, and the explosion-proof vortex pump 6, the exhaust port 7, the separator drain port 8, the first separator 4, the second separator 5, the unloading valve 11, the pressure gauge 12, the secondary filter 13, the tertiary filter 14, the main suction pipeline 16, the auxiliary suction pipeline 22 and the explosion-proof control box 15 are integrated and installed on the top frame 21;

[0032] The bottom frame 20 is provided with a mud bin 2, which is used as a container for collecting and storing mud. The mud bin 2 is welded to the bottom frame 20. Figure 3 As shown, a liquid level switch 18 is installed in the mud bin 2, and the liquid level switch 18 is fixed on the upper plane of the mud bin 2;

[0033] The bottom frame 20 and the top frame 21 are fixedly connected by ear plates and pins, so that the bottom frame 20 and the top frame 21 can be disassembled and transported separately.

[0034] A separator No. 1 4 and a separator No. 2 5 are installed at the upper front end of the top frame 21, a secondary filter 13 is installed inside the separator No. 1 4, a tertiary filter 14 is installed inside the separator No. 2 5, and a separator drain port 8 is installed at the bottom ends of the separator No. 1 4 and the separator No. 2 5, a pressure gauge 12 is installed on the pipeline at the rear end of the separator No. 2 5, and a relief valve 11 is installed below the pressure gauge 12, the separator No. 2 5 is connected to an explosion-proof vortex pump 6 through a pipeline, and an exhaust port 7 is fixed to the output end of the explosion-proof vortex pump 6, the upper and lower sections of the main suction pipeline 16 are connected by a flange, and the lower section of the main suction pipeline 16 is connected to the primary filter 3, the interior of the secondary filter 13 is penetrated by the top end of the main suction pipeline 16, the interior of the tertiary filter 14 is penetrated by the auxiliary suction pipeline 22, the separator No. 2 5 is connected to the separator No. 1 4 through the auxiliary suction pipeline 22, and a control valve is installed inside the separator drain port 8;

[0035] The entire system is closed and leak-free. The liquid inlet pipe 1 is connected to the drill pipe blowout prevention box (not within the scope of this patent) through an external pipeline (not within the scope of this patent). The automatic suction device operates the explosion-proof vortex pump 6 to draw a vacuum, so that the main suction line 16, the auxiliary suction line 22, the No. 1 separator 4, the No. 2 separator 5 and the mud bin 2 system form a negative pressure principle, thereby achieving the purpose of continuously sucking the mud in the drill pipe blowout box through the liquid inlet pipe 1.

[0036] A liquid level switch 18 is installed in the mud bin 2. When the float of the liquid level switch 18 is at a low position, the liquid level switch 18 outputs a low position signal. Under the control of the PLC, the drain valve 10 is closed, and the unloading valve 11 is controlled to be closed. The explosion-proof vortex pump 6 is started, and the device starts to vacuumize and suck mud into the mud bin 2. As the amount of mud collected increases, the liquid level rises.

[0037] When the float of the liquid level switch 18 reaches a high position, the liquid level switch 18 outputs a high position signal. Under the control of the PLC, the unloading valve 11 opens, the explosion-proof vortex pump 6 stops running, and the drain valve 10 opens at the same time, and the mud is discharged into the mud elevated tank through an external pipeline (not within the scope of this patent), and the cycle continues.

[0038] The gas is filtered through the primary filter 3, the secondary filter 13 and the tertiary filter 14, and the clean gas flows out from the exhaust port 7. The air is filtered through the primary filter 3, the secondary filter 13 and the tertiary filter 14 to separate the mud from the gas, so as to avoid the mud being sucked back into the explosion-proof vortex pump 6 through the main suction line 16 and the auxiliary suction line 22 under vacuum state, causing damage to the explosion-proof vortex pump 6. After a small amount of separated mud liquid is precipitated, the control valve inside the separator drain port 8 is opened and discharged through the separator drain port 8. The primary filter 3, the mud bin 2 and the main suction line 16 constitute a disassembly structure, and the primary filter 3 can be disassembled;

[0039] The above completes a series of operations of the automatic drilling mud suction device. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0040] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic drilling mud suction device, comprising a mud bin (2), an explosion-proof vortex pump (6), an explosion-proof control box (15), a bottom frame (20) and a top frame (21), characterized in that: A liquid inlet pipe (1) is fixed at the rear end of the mud bin (2), and the liquid inlet pipe (1) is connected to the drill pipe blowout prevention box through an external pipeline. A primary filter (3) is installed at the top of the mud bin (2), and the mud bin (2) is connected to the main suction pipeline (16) through the primary filter (3). A manhole (17) is provided at the left end of the mud bin (2), and a shielding cover (19) is provided on the outside of the manhole (17). A liquid discharge pipe (9) is connected to the bottom end of the mud bin (2), and a liquid discharge valve (10) is installed inside the liquid discharge pipe (9). A liquid level switch (18) is installed on the internal top wall of the mud bin (2), and the mud bin (2) is fixed on the bottom frame (20); The top of the bottom frame (20) is fixedly connected to a top frame (21) via ear plates and pins, a No. 1 separator (4) and a No. 2 separator (5) are installed at the front end of the top of the top frame (21), a secondary filter (13) is installed inside the No. 1 separator (4), a tertiary filter (14) is installed inside the No. 2 separator (5), and a separator drain port (8) is installed at the bottom of each of the No. 1 separator (4) and the No. 2 separator (5); A pressure gauge (12) is installed on the pipeline at the rear end of the No. 2 separator (5), and a relief valve (11) is installed below the pressure gauge (12). The No. 2 separator (5) is connected to an explosion-proof vortex pump (6) through a pipeline, and an exhaust port (7) is fixed to the output end of the explosion-proof vortex pump (6).

2. The automatic drilling mud suction device according to claim 1, characterized in that: The upper and lower sections of the main air intake pipeline (16) are connected via a flange, and the lower section of the main air intake pipeline (16) is connected to the primary filter (3).

3. The automatic drilling mud suction device according to claim 1, characterized in that: The interior of the secondary filter (13) is penetrated by the top end of the main air intake line (16).

4. The automatic drilling mud suction device according to claim 1, characterized in that: A secondary air intake line (22) runs through the interior of the third-stage filter (14).

5. The automatic drilling mud suction device according to claim 4, characterized in that: The No. 2 separator (5) is connected to the No. 1 separator (4) via a secondary suction pipeline (22).

6. The automatic drilling mud suction device according to claim 1, characterized in that: A control valve is installed inside the separator drain port (8).

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