Double-layer multi-channel mud tank
The design of a double-layer multi-channel mud tank solves the problem of sand settling at the bottom of the existing mud tank, achieves uniform stirring and efficient purification of the mud in the tank, reduces the risk of leakage, and improves the convenience of tank cleaning and the aesthetics of the tank body.
Patent Information
- Application Number
- CN202422869009.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-25
AI Technical Summary
The existing mud tank has an unreasonable structure, which easily forms a dead corner at the bottom of the tank, causing the solid matter in the mud to settle and form sand, increasing the workload of tank cleaning.
It adopts a double-layer multi-channel design. The tank bottom is made of arc-shaped steel plate rolled in one go. There are multiple saddles and wall panel supports inside the tank body. The tank surface adopts a frame structure and is equipped with an agitator and radar liquid level sensor. The pipelines are arranged on the outside of the tank body, and the suction pipeline interface is designed at the lowest point of the tank bottom.
It effectively prevents the solid phase of mud from settling at the bottom of the tank, reduces the risk of leakage, improves the mud purification quality and tank cleaning efficiency, and makes the tank body beautiful and tidy.
Smart Images
Figure CN223385142U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of oil drilling equipment and relates to a double-layer multi-channel mud tank. Background Art
[0002] In oil drilling operations, mud tanks, commonly used as containers in solids control systems, are crucial components of mud management systems, serving to prepare, store, circulate, and process the mud. As the circulating medium for the mud, the design of the mud tank directly impacts the quality of mud purification, the quality of the mud pump's water supply, and the amount of sand deposited on the tank bottom.
[0003] The structure of the existing mud tank is basically a square tank bottom, which is equipped with a vertical tank wall. Dead corners are easily formed between the tank wall and the tank bottom. When the agitator stirs the mud, the solid matter in the mud easily loses its mobility in the dead corners and gradually settles to form sand, causing a large workload for subsequent tank cleaning. Utility Model Content
[0004] The utility model aims to provide a double-layer multi-channel mud tank, which solves the problem that the mud tank of the solid control system in the prior art has an unreasonable bottom structure, is prone to sand deposition, and is inconvenient for subsequent tank cleaning.
[0005] The technical solution adopted by the utility model is a double-layer multi-channel mud tank, which includes a tank body, supporting equipment and supporting pipelines. The structure of the tank body is as follows: it includes a longitudinally arranged long strip tank base, a plurality of saddles are fixedly installed on the upper surface of the tank base in sequence along the longitudinal direction, and the plurality of saddles jointly support the arc tank bottom, the upper parts of the longitudinal sides of the arc tank bottom are connected to wall panels, and a plurality of square tubes are fixed to the arc tank bottom and the wall panels at intervals along the longitudinal direction, the wall panels and square tubes on both sides jointly support and connect the lower tank surface, and the lower tank surface is supported and connected to the upper tank surface upward;
[0006] The supporting equipment includes at least two sets of agitators installed on the lower tank surface, and the lower tank surface is also equipped with a mud gun, a valve wrench for the seabed valve, and a radar liquid level sensor.
[0007] The double-layer multi-channel mud tank of the utility model is also characterized in that:
[0008] The arc tank bottom is formed by rolling a whole piece of steel plate in one go; both end faces of the arc tank bottom are sealed with steel plates, and a control distribution box is installed on one of the outer end faces.
[0009] The upper tank surface and the lower tank surface are connected by ear plates; a lower tank ladder is installed downward on the lower tank surface, and a grille is installed on the upper tank surface, with a manhole cover plate on the grille.
[0010] The stirring impeller of the stirrer extends downward to the lowest point of the bottom of the arc tank.
[0011] The pipeline part includes zero emission pipeline, mud pump suction pipeline, slurry suction pipeline, slurry discharge pipeline, clean water pipeline and mud gun pipeline.
[0012] The zero-emission pipeline is installed between the tank base and the arc tank bottom. The input port of the zero-emission pipeline is opened at the lowest point of the arc tank bottom. The overall height of the zero-emission pipeline is lower than the bottom of the arc tank bottom.
[0013] The inlet of the mud pump suction pipeline is opened at the lowest point of the arc tank bottom, and the mud pump suction pipeline is connected to the mud pump externally.
[0014] The inlet of the slurry suction pipeline is opened on the side of the arc tank bottom and is kept at the same height as the slurry mixing pump, and the slurry suction pipeline is connected to the slurry mixing pump.
[0015] The clean water pipeline and mud gun pipeline are installed on both sides of the lower tank surface respectively.
[0016] The beneficial effects of the present invention include the following aspects:
[0017] 1) The bottom tank of the utility model is actually a semi-circular tank bottom. Under the stirring of the agitator, the kinetic force of the mud and the arc-shaped tank wall form a motion curve. The mud solid phase has no reaction force support and dead corner accumulation, and can only follow the movement of the mud, which is not easy to form sand.
[0018] 2) The curved tank bottom of this utility model is formed by rolling steel plates in one go, which has strong deformation resistance. There are no welds on the bottom surface, which completely reduces the risk of leakage.
[0019] 3) The tank surface of the utility model adopts a double-layer design. The lower tank surface is installed with all equipment such as agitators, slurry discharge pipelines, sensors, mud guns, etc., and the upper tank surface is installed with fences, awnings and control rooms, making the tank surface neat and beautiful.
[0020] 4) The utility model designs the suction port of the mud pump suction line at the low point of the tank bottom, ensuring that the higher density part is first pumped away by the mud pump, and through circulation, the solid phase of the mud is separated when passing through the purification equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the main structure of the double-layer multi-channel mud tank of the utility model;
[0022] Figure 2 This is a schematic structural diagram of a double-layer multi-channel mud tank from the left side of the utility model;
[0023] Figure 3 This is a top view of the suction pipeline of the mud pump and the suction pipeline of the slurry mixing pump of the utility model;
[0024] Figure 4This is a top view of the zero-discharge pipeline of the double-layer multi-channel mud tank of the utility model;
[0025] Figure 5 The utility model is a schematic diagram of the installation positions of the mud gun, the seabed valve, the clean water outlet and the radar liquid level sensor.
[0026] In the figure, 1. Arc tank bottom, 2. Tank base, 3. Saddle, 4. Agitator, 5. Hoisting pipe, 6. Control distribution box, 7. Lower tank surface, 8. Upper tank surface, 9. Square tube, 10. Wall panel, 11. Agitator impeller, 12. Lower tank ladder, 13. Mud pump suction pipeline, 14. Zero discharge pipeline, 15. Slurry suction pipeline, 16. Mud gun, 17. Subsea valve, 18. Slurry discharge pipeline, 19. Radar liquid level sensor, 20. Clean water outlet, 21. Clean water pipeline, 22. Mud gun pipeline. DETAILED DESCRIPTION
[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0028] The structure of the double-layer multi-channel mud tank of the utility model includes a tank body, supporting equipment and supporting pipelines.
[0029] Reference Figure 1 、 Figure 4 、 Figure 5 The structure of the tank body is as follows: it includes a long strip tank base 2 arranged in the longitudinal direction, and a plurality of saddles 3 (welded, the number is 4-6 groups) are fixedly installed in sequence along the longitudinal direction on the upper surface of the tank base 2. The plurality of saddles 3 jointly support the arc tank bottom 1, and the upper parts of the two longitudinal sides of the arc tank bottom 1 are connected with wall panels 10. The arc tank bottom 1 and the wall panels 10 are fixed with square tubes 9 at intervals in the longitudinal direction. The wall panels 10 and square tubes 9 on both sides jointly support and connect the lower tank surface 7 upward. The lower tank surface 7 is also provided with a lower tank ladder 12 downward, and the lower tank surface 7 is supported and connected to the upper tank surface 8 upward.
[0030] The arc tank bottom 1 is formed by rolling a whole piece of steel plate in one go; both ends of the arc tank bottom 1 are sealed with steel plates, and both ends are expanded upwards (see Figure 1 The facades at both ends), one of which is equipped with a control distribution box 6 to control the following supporting related electrical equipment;
[0031] A set of lifting pipes 5 are respectively provided at both longitudinal ends of the tank base 2 to provide lifting connection points, so that they can be quickly connected to the lifting equipment when the entire tank is moved;
[0032] The upper tank surface 8 and the lower tank surface 7 are both frame structures, and are connected by ear plates. All ear plates are detachable. A grille is installed on the upper tank surface 8, and a manhole cover is left on the grille. Railings are installed all around the upper tank surface 8, and the railings are foldable and can be laid down on the upper tank surface 8. Because the relevant equipment is carried and installed on the lower tank surface 7, the upper tank surface 8 is beautiful and tidy as a whole.
[0033] The wall panel 10 is made of corrugated board to increase the strength of the wall panel 10 .
[0034] The supporting equipment includes at least two sets of agitators 4 installed on the lower tank surface 7, and the agitator impeller 11 of the agitator 4 extends downward to the lowest point of the arc tank bottom 1. The lower tank surface 7 is also equipped with a mud gun 16, a valve wrench for a seabed valve 17, a radar liquid level sensor 19 and other equipment;
[0035] The mud gun 16 is used for tank bottom cleaning and auxiliary mud injection;
[0036] The interior of the tank body is divided into two compartments along the longitudinal direction, and the middle partition is provided with a seabed valve 17, which is a control valve connecting the two compartments inside the tank body; correspondingly, two sets of agitators 4 are respectively installed above the two compartments, and the two stirring impellers 11 extend to the bottom of the two compartments respectively.
[0037] The radar level sensor 19 uses radar detection to monitor the mud level in the tank and transmits the signal to the mud control room or the drilling rig control room.
[0038] Reference Figure 2 、 Figure 3 、 Figure 5 The pipeline part includes zero discharge pipeline 14, mud pump suction pipeline 13, slurry suction pipeline 15, slurry discharge pipeline 18, clean water pipeline 21, and mud gun pipeline 22.
[0039] The zero-discharge pipeline 14 is installed between the tank base 2 and the arc tank bottom 1. The inlet of the zero-discharge pipeline 14 is opened at the lowest point of the arc tank bottom 1, and the overall height of the zero-discharge pipeline 14 is lower than the bottom of the arc tank bottom 1. The function of the zero-discharge pipeline 14 is to discharge all the mud in the tank through the zero-discharge pipeline 14 when the mud needs to be replaced or when the mud in the tank needs to be emptied after drilling is completed.
[0040] The clean water pipeline 21 and the mud gun pipeline 22 are respectively installed on both sides of the lower tank surface 7.
[0041] The inlet of the mud pump suction line 13 is opened at the lowest point of the arc tank bottom 1, and the mud pump suction line 13 is connected to the mud pump externally;
[0042] The slurry suction pipeline 15 is opened on the side of the arc tank bottom 1 and maintained at the same height as the slurry mixing pump. The slurry suction pipeline 15 is connected to the slurry mixing pump, and the slurry mixing pump outlet is connected to the mixing funnel.
[0043] The slurry discharge pipeline 18 is connected to the discharge port of the slurry pump. The slurry discharge pipeline 18 is fixed on the frame of the lower tank surface 7 and the outlet leads downward into the tank.
[0044] The mud pump and the slurry mixing pump both suck the mud in the tank. The mud sucked by the mud pump is pumped into the well through the high-pressure manifold, and the mud sucked by the slurry mixing pump is added and mixed through the mixing funnel and then returned to the mud tank.
[0045] The working principle of the utility model device is:
[0046] 1) 4-6 saddles 3 are welded to the tank base 2 to support the arc tank bottom 1. A square tube 9 is provided on the upper part of the arc tank bottom 1 to connect the arc tank bottom 1 and the wall panel 10 supporting it. The wall panel 10 is made of corrugated board to increase the strength of the wall panel 10. The wall panel 10 is connected to the lower tank surface 7 upward; the square tubes 9 on both sides of the lower tank surface 7 are connected to the clean water pipeline 21 on one side and the mud gun pipeline 22 on the other side; the lower tank surface 7 is equipped with an agitator 4, a mud gun 16, a valve wrench of the seabed valve 17 for inter-tank balance, a radar liquid level sensor 19, a clean water outlet 20, a slurry discharge pipeline 18, etc., and a lower tank ladder 12 is installed near the mixing impeller 11 to facilitate equipment installation and maintenance. The upper tank surface 8 is installed on the lower tank surface 7. There is a manhole cover on the grille of the upper tank surface 8, and railings are installed around it. The railings are foldable and can be laid down on the upper tank surface 8. Because the equipment of this double-layer tank surface mud tank is installed on the lower tank surface 7, the upper tank surface 8 is beautiful and tidy as a whole.
[0047] 2) When the agitator 4 stirs the mud, the movement of the mud forms a motion curve with the arc tank bottom 1. The solid phase of the mud has no reaction force to support it and can only follow the movement of the mud, which is not easy to form sand. In addition, the arc tank bottom 1 is formed by one-time rolling of steel plates, which has strong deformation resistance and no welds on the bottom surface, while reducing the risk of leakage. All suction pipelines are installed on the outside of the tank body. There are no pipelines inside the tank body. After long-term use, even if a high density of sand is deposited in the tank body, the tank cleaning operation is very convenient.
[0048] 3) The mud pump suction pipeline 13 and the slurry mixing suction pipeline 15 are arranged on the outside of the arc bottom tank. The interface of the mud pump suction pipeline 13 is at the lowest point of the tank body. Since the pipeline interface intersects with the arc bottom and does not penetrate deep into the tank, there is no pipeline on the inside of the tank body, which can better suck the mud in the tank when the mud pump is working.
[0049] 4) The installation of the mud gun pipeline 22 and the clean water pipeline 21 utilizes the frame side beams of the lower tank surface 7, saving pipeline materials and making the pipeline space layout more reasonable. The operating valve of the mud gun 16, the valve of the clean water outlet 20, and the valve wrench of the seabed valve 17 for tank compartment balance are all set in the interlayer between the lower tank surface 7 and the upper tank surface 8. A T-type wrench is used to open and close each valve. The radar liquid level sensor 19 measures the liquid level in the tank in real time and transmits the signal to the solids control system control room or the driller's control room, so that the operator can know the total amount of mud (slurry) in the tank at any time.
[0050] 5) The zero-discharge pipeline 14 is set at the lowest point on the side of the slurry suction pipeline 15. When the mud needs to be replaced or the mud in the tank needs to be drained after drilling is completed, all the mud in the tank can be discharged and collected through the zero-discharge pipeline 14.
[0051] The working process of the utility model device is:
[0052] 1) During normal operation, the slurry pump draws mud from the tank through the slurry suction line 15. Bulk material is then added to the mixing funnel based on downhole conditions. Excess mixed mud after the cycle is complete returns to the tank through the slurry discharge line 18. During this period, the agitator 4 is activated, and the impeller 11 continuously stirs the mud to ensure a uniform, stable slurry. The mud pump suction line 13 is connected to the slurry pump, which pumps the mixed mud to the bottom of the well through the high-pressure manifold to ensure smooth drilling.
[0053] 2) When the density of the mud in the tank is too high and water needs to be added, the clean water outlet 20 is connected to the clean water pipeline 21, and the clean water pipeline 21 is connected to the external water tank water supply pump. The valve of the clean water outlet 20 is opened to add water to the tank, and the impeller 11 continues to stir to dilute the mud and mix it evenly.
[0054] 3) When it is necessary to balance the liquid levels of the two compartments in the tank, open the seabed valve 17 to achieve automatic flow of liquid in the two compartments to reach a balanced state.
[0055] 4) Liquid is supplied to the mud gun pipeline 22 through the slurry mixing pump, and the mud gun pipeline 22 is connected to the mud gun 16. The mud gun 16 can better assist the agitator 4 in reducing sand deposition at the bottom of the tank. In addition, when the mud is used up and the tank is cleaned, the slurry mixing pump can be connected to an external clean water tank, and the handle of the mud gun 16 can be rotated to rinse the bottom of the tank with clean water.
[0056] 5) The slurry in the tank needs to be drained, which is done by opening the discharge valve of the zero discharge line 14.
[0057] Example 1
[0058] The structure of the double-layer multi-channel mud tank of this embodiment 1 includes a tank body, supporting equipment and supporting pipelines.
[0059] The structure of the tank body is that it includes a long strip tank base 2 arranged in the longitudinal direction, and four saddles 3 (welded) are fixedly installed on the upper surface of the tank base 2 at intervals in the longitudinal direction. The four saddles 3 jointly support the arc tank bottom 1, and the upper parts of the two longitudinal sides of the arc tank bottom 1 are connected to wall panels 10. The arc tank bottom 1 and the wall panels 10 are fixed with square tubes 9 at intervals in the longitudinal direction. The wall panels 10 and square tubes 9 on both sides jointly support and connect the lower tank surface 7 upward. The lower tank surface 7 is also equipped with a lower tank ladder 12 downward, and the lower tank surface 7 is supported and connected to the upper tank surface 8 upward.
[0060] The supporting equipment includes at least two sets of agitators 4 installed on the lower tank surface 7, and the agitator impeller 11 of the agitator 4 extends downward to the lowest point of the arc tank bottom 1. The lower tank surface 7 is also provided with a mud gun 16, a seabed valve 17, and a radar liquid level sensor 19;
[0061] The pipeline part includes a zero-discharge pipeline 14 , a mud pump suction pipeline 13 , a slurry suction pipeline 15 , a slurry discharge pipeline 18 , a clean water pipeline 21 , and a mud gun pipeline 22 .
[0062] Example 2
[0063] The structure of the double-layer multi-channel mud tank of this embodiment 2 includes a tank body, supporting equipment and supporting pipelines.
[0064] The structure of the tank body is that it includes a long strip tank base 2 arranged in the longitudinal direction, and four saddles 3 (welded) are fixedly installed on the upper surface of the tank base 2 at intervals in the longitudinal direction. The four saddles 3 jointly support the arc tank bottom 1, and the upper parts of the two longitudinal sides of the arc tank bottom 1 are connected to wall panels 10. The arc tank bottom 1 and the wall panels 10 are fixed with square tubes 9 at intervals in the longitudinal direction. The wall panels 10 and square tubes 9 on both sides jointly support and connect the lower tank surface 7 upward. The lower tank surface 7 is also equipped with a lower tank ladder 12 downward, and the lower tank surface 7 is supported and connected to the upper tank surface 8 upward.
[0065] The supporting equipment includes at least two sets of agitators 4 installed on the lower tank surface 7, and the agitator impeller 11 of the agitator 4 extends downward to the lowest point of the arc tank bottom 1. The lower tank surface 7 is also provided with a mud gun 16, a seabed valve 17, and a radar liquid level sensor 19;
[0066] The pipeline part includes a zero-discharge pipeline 14 , a mud pump suction pipeline 13 , a slurry suction pipeline 15 , a slurry discharge pipeline 18 , a clean water pipeline 21 , and a mud gun pipeline 22 .
[0067] The arc tank bottom 1 is formed by rolling a whole piece of steel plate in one go; the two end faces of the arc tank bottom 1 are sealed with steel plates, and the two end faces are expanded upwards (see Figure 1The facades at both ends), one of which is equipped with a control distribution box 6 to control the following supporting related electrical equipment;
[0068] A set of lifting pipes 5 are respectively provided at both longitudinal ends of the tank base 2 to provide lifting connection points so as to achieve quick connection with the lifting equipment when the tank is moved as a whole.
[0069] Example 3
[0070] The structure of the double-layer multi-channel mud tank of this embodiment 3 is as follows:
[0071] The structure of the tank body is that it includes a long strip tank base 2 arranged in the longitudinal direction, and four saddles 3 (welded) are fixedly installed on the upper surface of the tank base 2 at intervals in the longitudinal direction. The four saddles 3 jointly support the arc tank bottom 1, and the upper parts of the two longitudinal sides of the arc tank bottom 1 are connected to wall panels 10. The arc tank bottom 1 and the wall panels 10 are fixed with square tubes 9 at intervals in the longitudinal direction. The wall panels 10 and square tubes 9 on both sides jointly support and connect the lower tank surface 7 upward. The lower tank surface 7 is also equipped with a lower tank ladder 12 downward, and the lower tank surface 7 is supported and connected to the upper tank surface 8 upward.
[0072] The supporting equipment includes at least two sets of agitators 4 installed on the lower tank surface 7, and the agitator impeller 11 of the agitator 4 extends downward to the lowest point of the arc tank bottom 1. The lower tank surface 7 is also provided with a mud gun 16, a seabed valve 17, and a radar liquid level sensor 19;
[0073] The pipeline part includes a zero-discharge pipeline 14 , a mud pump suction pipeline 13 , a slurry suction pipeline 15 , a slurry discharge pipeline 18 , a clean water pipeline 21 , and a mud gun pipeline 22 .
[0074] The upper tank surface 8 and the lower tank surface 7 are connected by ear plates, all of which are detachable. A grille is installed on the upper tank surface 8, and a manhole cover is left on the grille. Railings are installed all around the upper tank surface 8, and the railings are foldable and can be laid down on the upper tank surface 8. Because the relevant equipment is installed on the lower tank surface 7, the upper tank surface 8 is beautiful and tidy as a whole.
[0075] The wall panel 10 is made of corrugated board to increase the strength of the wall panel 10 .
[0076] Example 4
[0077] The structure of the double-layer multi-channel mud tank of this embodiment 4 includes a tank body, supporting equipment and supporting pipelines.
[0078] The structure of the tank body is that it includes a long strip tank base 2 arranged in the longitudinal direction, and four saddles 3 (welded) are fixedly installed on the upper surface of the tank base 2 at intervals in the longitudinal direction. The four saddles 3 jointly support the arc tank bottom 1. The upper parts of the two longitudinal sides of the arc tank bottom 1 are connected with wall panels 10. The arc tank bottom 1 and the wall panels 10 are fixed with square tubes 9 at intervals in the longitudinal direction. The wall panels 10 and square tubes 9 on both sides jointly support and connect the lower tank surface 7 upward. The lower tank surface 7 is also installed with a lower tank ladder 12 downward, and the lower tank surface 7 is supported and connected to the upper tank surface 8 upward.
[0079] The supporting equipment includes at least two sets of agitators 4 installed on the lower tank surface 7, and the agitator impeller 11 of the agitator 4 extends downward to the lowest point of the arc tank bottom 1. The lower tank surface 7 is also provided with a mud gun 16, a seabed valve 17, and a radar liquid level sensor 19;
[0080] The pipeline part includes a zero-discharge pipeline 14 , a mud pump suction pipeline 13 , a slurry suction pipeline 15 , a slurry discharge pipeline 18 , a clean water pipeline 21 , and a mud gun pipeline 22 .
[0081] The radar level sensor 19 uses radar detection to monitor the mud level in the tank and transmits the signal to the mud control room or the drilling rig control room.
[0082] Example 5
[0083] The structure of the double-layer multi-channel mud tank of this embodiment 5 includes a tank body, supporting equipment and supporting pipelines.
[0084] The structure of the tank body is that it includes a long strip tank base 2 arranged in the longitudinal direction, and four saddles 3 (welded) are fixedly installed on the upper surface of the tank base 2 at intervals in the longitudinal direction. The four saddles 3 jointly support the arc tank bottom 1. The upper parts of the two longitudinal sides of the arc tank bottom 1 are connected with wall panels 10. The arc tank bottom 1 and the wall panels 10 are fixed with square tubes 9 at intervals in the longitudinal direction. The wall panels 10 and square tubes 9 on both sides jointly support and connect the lower tank surface 7 upward. The lower tank surface 7 is also installed with a lower tank ladder 12 downward, and the lower tank surface 7 is supported and connected to the upper tank surface 8 upward.
[0085] The supporting equipment includes at least two sets of agitators 4 installed on the lower tank surface 7, and the agitator impeller 11 of the agitator 4 extends downward to the lowest point of the arc tank bottom 1. The lower tank surface 7 is also provided with a mud gun 16, a seabed valve 17, and a radar liquid level sensor 19;
[0086] The pipeline part includes a zero-discharge pipeline 14 , a mud pump suction pipeline 13 , a slurry suction pipeline 15 , a slurry discharge pipeline 18 , a clean water pipeline 21 , and a mud gun pipeline 22 .
[0087] The zero-discharge pipeline 14 is installed between the tank base 2 and the arc tank bottom 1. The inlet of the zero-discharge pipeline 14 is opened at the lowest point of the arc tank bottom 1, and the overall height of the zero-discharge pipeline 14 is lower than the bottom of the arc tank bottom 1. The function of the zero-discharge pipeline 14 is to discharge all the mud in the tank through the zero-discharge pipeline 14 when the mud needs to be replaced or when the mud in the tank needs to be emptied after drilling is completed.
[0088] Example 6
[0089] The structure of the double-layer multi-channel mud tank of this embodiment 6 includes a tank body, supporting equipment and supporting pipelines.
[0090] The structure of the tank body is that it includes a long strip tank base 2 arranged in the longitudinal direction, and four saddles 3 (welded) are fixedly installed on the upper surface of the tank base 2 at intervals in the longitudinal direction. The four saddles 3 jointly support the arc tank bottom 1. The upper parts of the two longitudinal sides of the arc tank bottom 1 are connected with wall panels 10. The arc tank bottom 1 and the wall panels 10 are fixed with square tubes 9 at intervals in the longitudinal direction. The wall panels 10 and square tubes 9 on both sides jointly support and connect the lower tank surface 7 upward. The lower tank surface 7 is also installed with a lower tank ladder 12 downward, and the lower tank surface 7 is supported and connected to the upper tank surface 8 upward.
[0091] The supporting equipment includes at least two sets of agitators 4 installed on the lower tank surface 7, and the agitator impeller 11 of the agitator 4 extends downward to the lowest point of the arc tank bottom 1. The lower tank surface 7 is also provided with a mud gun 16, a seabed valve 17, and a radar liquid level sensor 19;
[0092] The pipeline part includes a zero-discharge pipeline 14 , a mud pump suction pipeline 13 , a slurry suction pipeline 15 , a slurry discharge pipeline 18 , a clean water pipeline 21 , and a mud gun pipeline 22 .
[0093] The clean water pipeline 21 and the mud gun pipeline 22 are respectively installed on both sides of the lower tank surface 7, which not only play the role of structural support, but also serve as the conveying pipelines for clean water and mud respectively.
Claims
1. Double-layer multi-channel mud tank, characterized by: The invention comprises a tank body, supporting equipment and supporting pipelines. The structure of the tank body comprises a long strip tank base (2) arranged in the longitudinal direction, a plurality of saddles (3) are fixedly installed on the upper surface of the tank base (2) at intervals in the longitudinal direction, the plurality of saddles (3) jointly support a circular tank bottom (1), the upper parts of the two longitudinal sides of the circular tank bottom (1) are connected with wall panels (10), a plurality of square tubes (9) are fixedly fixed in the longitudinal direction between the circular tank bottom (1) and the wall panels (10), the wall panels (10) and the square tubes (9) on both sides jointly support and connect to the lower tank surface (7), and the lower tank surface (7) supports and connects to the upper tank surface (8) upward. The supporting equipment includes at least two sets of agitators (4) installed on the lower tank surface (7), and a mud gun (16), a valve wrench of a seabed valve (17), and a radar liquid level sensor (19) are also provided on the lower tank surface (7).
2. The double-layer multi-channel mud tank according to claim 1, characterized in that: The arc tank bottom (1) is formed by rolling a whole steel plate in one go; both end faces of the arc tank bottom (1) are sealed with steel plates, and a control distribution box (6) is installed on one of the outer end faces.
3. The double-layer multi-channel mud tank according to claim 1, characterized in that: The upper tank surface (8) and the lower tank surface (7) are connected by ear plates; a lower tank ladder (12) is installed downwardly on the lower tank surface (7); a grille is installed on the upper tank surface (8), and a manhole cover is left on the grille.
4. The double-layer multi-channel mud tank according to claim 1, characterized in that: The stirring impeller (11) of the stirrer (4) extends downward to the lowest point of the arc tank bottom (1).
5. The double-layer multi-channel mud tank according to claim 1, characterized in that: The pipeline section includes a zero-discharge pipeline (14), a mud pump suction pipeline (13), a slurry suction pipeline (15), a slurry discharge pipeline (18), a clean water pipeline (21), and a mud gun pipeline (22).
6. The double-layer multi-channel mud tank according to claim 5, characterized in that: The zero-discharge pipeline (14) is installed between the tank base (2) and the arc tank bottom (1), the input port of the zero-discharge pipeline (14) is opened at the lowest point of the arc tank bottom (1), and the overall height of the zero-discharge pipeline (14) is lower than the bottom of the arc tank bottom (1).
7. The double-layer multi-channel mud tank according to claim 5, characterized in that: The inlet of the mud pump suction pipeline (13) is opened at the lowest point of the arc tank bottom (1), and the mud pump suction pipeline (13) is connected to the mud pump externally.
8. The double-layer multi-channel mud tank according to claim 5, characterized in that: The inlet of the slurry mixing suction pipeline (15) is opened on the side of the arc tank bottom (1) and is kept at the same height as the slurry mixing pump, and the slurry mixing suction pipeline (15) is connected to the slurry mixing pump.
9. The double-layer multi-channel mud tank according to claim 5, characterized in that: The clean water pipeline (21) and the mud gun pipeline (22) are respectively installed on both sides of the lower tank surface (7).