CN216950283U - Fine pressure control drilling pump flow dividing device - Google Patents

Abstract

The utility model discloses a shunt device of a fine pressure control drilling pump, which comprises a first pipeline and a second pipeline, wherein the first pipeline is provided with the drilling pump, a first valve and a second valve, the second pipeline is provided with a first vertical pipe, a second vertical pipe, a fixed pipe and an automatic throttling manifold, the fixed pipe is provided with a first hydraulic flat valve, and the automatic throttling manifold is provided with a second hydraulic flat valve; the filter is characterized in that a first connecting pipe is installed at the other end of the second vertical pipe, a square filter pipe is installed on the first connecting pipe, a second connecting pipe is installed on the square filter pipe, and a filter plate is fixedly arranged in the square filter pipe. According to the utility model, by arranging the filtering square pipe, the filtering plate, the first connecting pipe and the second connecting pipe, when drilling fluid enters the filtering square pipe, the filtering plate can filter the drilling fluid, so that impurities are prevented from blocking the second vertical pipe and the second pipeline, and normal drilling construction at the next stage is ensured.

Description

Fine pressure control drilling pump flow dividing device

Technical Field

The utility model relates to the field of flow dividing devices, in particular to a flow dividing device of a fine pressure control drilling pump.

Background

When fine pressure control drilling and well cementation are carried out, the loss of circulating pressure loss is caused by stopping a pump, in order to compensate the circulating pressure loss and keep the bottom hole pressure stable, the pressure is compensated to the annular space by mainly adopting a back pressure compensation system at present, the bottom hole pressure is ensured to be within the range of a safe density window, but the back pressure compensation system does not have a standby device, the failure is forced to be interrupted, the back pressure compensation system can be continuously used after being repaired, a certain well control risk exists, and meanwhile, the number of field equipment is increased by adopting the back pressure compensation system, so that the operation cost is increased. On the other hand, the current fine pressure control drilling operation calculates the inlet flow according to the size of the cylinder sleeve and the pump stroke. If the water efficiency of the drilling pump is poor, a large difference exists between the actual inlet flow and the calculated inlet flow, and wrong data is provided for the fine pressure control drilling and well cementation operation.

In view of the above, chinese patent application No. CN201821614178.5, discloses a flow divider of a fine pressure control drilling pump, which comprises a first channel, a second channel, a first flat plate valve, a second flat plate valve, a third flat plate valve, a first hydraulic flat valve, a second hydraulic flat valve, a first communicating pipe and a second communicating pipe, a normally closed first flat plate valve is arranged in the middle of the channel II, a normally open third flat plate valve is arranged in the middle of the first communicating pipe, a normally open second flat plate valve is arranged in the middle of the first channel, a first hydraulic flat plate valve is arranged at the end head part of the first channel close to the vertical pipe, and a second hydraulic flat valve is arranged at the end part of a second channel close to the automatic throttling manifold, one end of a second communicating pipe is connected to the first channel between the second flat valve and the first hydraulic flat valve, and the other end of the second communicating pipe is connected to the second channel between the first flat valve and the second hydraulic flat valve. The utility model realizes the free switching of the drilling pump to the vertical pipe and the automatic throttle manifold channel.

Above-mentioned patent still has some insufficiencies, and it lacks the device to drilling fluid filtration, makes the easy pipeline that blocks up of large granule thing in the drilling fluid, and then influences the normal drilling construction in lower stage, can not satisfy the user demand.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a flow dividing device of a fine pressure control drilling pump, which solves at least one technical problem.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a shunt device of a drilling pump with fine pressure control comprises a first pipeline and a second pipeline, wherein the first pipeline is provided with the drilling pump, a first valve and a second valve, the second pipeline is provided with a first vertical pipe, a second vertical pipe, a fixed pipe and an automatic throttling manifold, the fixed pipe is provided with a first hydraulic flat valve, the automatic throttling manifold is provided with a second hydraulic flat valve, the first vertical pipe is provided with a third valve, and the second vertical pipe is provided with a fourth valve; the other end and the first pipe connection of first standpipe, first connecting pipe is installed to the other end of second standpipe, install filter side's pipe on the first connecting pipe, install the second connecting pipe on the filter side's pipe, the other end and the first pipeline fixed connection of second connecting pipe, the filter side intraductal filter that has set firmly, be provided with on the filter side's pipe and hit the mechanism.

Preferably, the bottom surface of the square filtering pipe is provided with a drain pipe in a penetrating way, and the drain pipe is provided with a sealing cover.

Preferably, hit and beat the mechanism and include the fixed plate, the fixed plate is installed on the inner wall that filters square pipe, it is connected with the axostylus axostyle to rotate on the fixed plate, the other end of axostylus axostyle runs through the bottom surface that filters square pipe and with filter square pipe and rotate and be connected, the axostylus axostyle is located one of filtering square intraductal and is installed a plurality of rubber poles, and a plurality of the other end of rubber pole all installs and hits the ball, hit the ball and contact with the filter.

Preferably, a rotating rod is installed at one end, located outside the filtering square tube, of the shaft rod, and anti-skid lines are arranged on the rotating rod.

Preferably, a waterproof bearing is installed at the joint of the shaft lever and the filtering square tube, and the waterproof bearing is sleeved on the shaft lever.

Preferably, a first flow meter is mounted on the first vertical pipe, and a second flow meter is mounted on the second vertical pipe.

The utility model has the beneficial effects that:

1. according to the utility model, by arranging the filtering square pipe, the filtering plate, the first connecting pipe and the second connecting pipe, when drilling fluid enters the filtering square pipe, the filtering plate can filter the drilling fluid, so that impurities are prevented from blocking the second vertical pipe and the second pipeline, and normal drilling construction at the next stage is ensured.

2. When the filter plate is used, the rotating rod is rotated to drive the shaft rod to rotate, so that the rubber rods are driven to rotate, the hitting balls hit the filter plate, the filter plate vibrates, and impurities on the filter plate are prevented from being shaken off, so that the filter efficiency of the filter plate is prevented from being influenced due to the fact that the impurities block the filter plate.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of portion B of FIG. 1 according to the present invention;

reference numerals: 1. a first pipe; 2. a second conduit; 3. a first vertical tube; 4. a second standpipe; 5. a drilling pump; 6. a first valve; 7. a second valve; 8. a third valve; 9. a first flow meter; 10. a fourth valve; 11. a second flow meter; 12. a fixed tube; 13. a first hydraulic flat valve; 14. an automatic throttle manifold; 15. a second hydraulic flat valve; 16. filtering the square tube; 17. a first connecting pipe; 18. a second connecting pipe; 19. a filter plate; 20. a blow-off pipe; 21. a sealing cover; 22. a fixing plate; 23. a shaft lever; 24. a rubber rod; 25. hitting a ball; 26. rotating the rod; 27. a waterproof bearing.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Other embodiments obtained by persons skilled in the art without making creative efforts based on the embodiments in the implementation belong to the protection scope of the utility model.

Specific embodiments of the present invention are described below with reference to the accompanying drawings.

Examples

As shown in fig. 1-3, a pressure-finely controlled drilling pump flow divider includes a first pipe 1 and a second pipe 2, a drilling pump 5, a first valve 6 and a second valve 7 are installed on the first pipe 1, the drilling pump 5 is located between the first valve 6 and the second valve 7, a first vertical pipe 3, a second vertical pipe 4, a fixed pipe 12 and an automatic throttle manifold 14 are installed on the second pipe 2, a first hydraulic flat valve 13 is installed on the fixed pipe 12, a second hydraulic flat valve 15 is installed on the automatic throttle manifold 14, a third valve 8 is installed on the first vertical pipe 3, and a fourth valve 10 is installed on the second vertical pipe 4; the other end of first standpipe 3 is connected with first pipeline 1, and first connecting pipe 17 is installed to the other end of second standpipe 4, installs filter side's pipe 16 on the first connecting pipe 17, installs second connecting pipe 18 on filter side's pipe 16, and the other end and the first pipeline 1 fixed connection of second connecting pipe 18 have set firmly filter 19 in the filter side's pipe 16, are provided with on the filter side's pipe 16 and hit the mechanism of beating.

In the embodiment, specifically, a sewage discharge pipe 20 is installed on the bottom surface of the square filtering pipe 16 in a penetrating manner, and a sealing cover 21 is installed on the sewage discharge pipe 20; through setting up blow off pipe 20 and sealed lid 21, be convenient for discharge the debris that collect in the square pipe 16 of filtering.

In this embodiment, specifically, the hitting mechanism includes a fixing plate 22, the fixing plate 22 is mounted on the inner wall of the square filtering tube 16, a shaft rod 23 is rotatably connected to the fixing plate 22, the other end of the shaft rod 23 penetrates through the bottom surface of the square filtering tube 16 and is rotatably connected with the square filtering tube 16, a plurality of rubber rods 24 are mounted on one end of the shaft rod 23 located in the square filtering tube 16, hitting balls 25 are mounted at the other ends of the plurality of rubber rods 24, and the hitting balls 25 are in contact with the filtering plate 19; through setting up hitting the mechanism, during the use, through rotating axostylus axostyle 23, make axostylus axostyle 23 drive a plurality of rubber poles 24 rotations, and then drive a plurality of balls 25 rotations of hitting, and then make a plurality of balls 25 of hitting hit and hit filter 19 to make filter 19 produce vibrations, thereby shake the debris on the filter 19 and fall, thereby avoid debris to block up filter 19 and influence filter 19's filtration efficiency.

In this embodiment, specifically, a rotating rod 26 is installed at one end of the shaft rod 23 located outside the square filtering pipe 16, and the rotating rod 26 is provided with anti-skid threads; by providing the turning rod 26, a labor-saving turning shaft 23 is facilitated.

In this embodiment, specifically, a waterproof bearing 27 is installed at a joint of the shaft rod 23 and the filtering square tube 16, and the waterproof bearing 27 is sleeved on the shaft rod 23; by arranging the waterproof bearing 27, the drilling fluid is prevented from leaking out through the connecting part of the shaft rod 23 and the filtering square pipe 16.

In this embodiment, specifically, the first standpipe 3 is provided with a first flow meter 9, and the second standpipe 4 is provided with a second flow meter 11; by providing the first flow meter 9 and the second flow meter 11, the calculation of the flow rate is facilitated.

The working principle is as follows: when the device is used specifically, the fine pressure control drilling and well cementation ground flow dividing device is installed between a drilling pump 5 and a fixed pipe 12, then a fourth valve 10 and a second valve 7 are opened, a third valve 8 and a first valve 6 are closed, during drilling, a first hydraulic flat valve 13 is opened, a second hydraulic flat valve 15 is closed, drilling fluid enters a filtering square pipe 16 through a first pipeline 1 and a second connecting pipe 18, then enters a second pipeline 2 through a first connecting pipe 17 and a second vertical pipe 4, and then enters the fixed pipe 12; when pressure control drilling is needed, a second hydraulic flat valve 15 is opened, a first hydraulic flat valve 13 is closed, drilling fluid in the second pipeline 2 enters an automatic throttling manifold 14, and sleeve pressure control is performed through the automatic throttling manifold 14 so as to achieve the purpose of sleeve pressure compensation; by opening or closing the first hydraulic flat valve 13 and the second hydraulic flat valve 15, drilling fluid can conveniently enter the fixed pipe 12 or the automatic throttle manifold 14, well control risks caused by the fact that a back pressure compensation system needs to be stopped due to faults and the like are avoided, and continuity of fine pressure control operation is achieved.

By arranging the filtering square pipe 16 and the filtering plate 19, when drilling fluid enters the filtering square pipe 16, the filtering plate 19 can filter the drilling fluid, so that sundries are prevented from blocking the second vertical pipe 4 and the second pipeline 2, when the filter is used, the rotating rod 26 is rotated to drive the shaft rod 23 to rotate, the shaft rod 23 drives the rubber rods 24 to rotate, the hitting balls 25 are driven to hit the filtering plate 19, the filtering plate 19 vibrates, and the shaking sundries on the filtering plate 19 fall off, so that the filtering efficiency of the filtering plate 19 is prevented from being influenced by the sundries blocking the filtering plate 19;

after the filter is used for a period of time, the fourth valve 10 and the second valve 7 are closed, the third valve 8 and the first valve 6 are opened, drilling fluid enters the second pipeline 2 through the first vertical pipe 3, then the sealing cover 21 is opened, sundries collected in the square filtering pipe 16 are discharged, after the completion, the sealing cover 21 is installed on the sewage discharge pipe 20, then the fourth valve 10 and the second valve 7 close the third valve 8 and the first valve 6, and the drilling fluid enters the second pipeline 2 through the second connecting pipe 18, the square filtering pipe 16, the first connecting pipe 17 and the first vertical pipe 3.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. A fine control pressure drilling pump flow dividing device comprises a first pipeline (1) and a second pipeline (2), wherein a drilling pump (5), a first valve (6) and a second valve (7) are installed on the first pipeline (1), and the fine control pressure drilling pump flow dividing device is characterized in that: a first vertical pipe (3), a second vertical pipe (4), a fixed pipe (12) and an automatic throttling manifold (14) are arranged on the second pipeline (2), a first hydraulic flat valve (13) is arranged on the fixed pipe (12), a second hydraulic flat valve (15) is arranged on the automatic throttling manifold (14), a third valve (8) is arranged on the first vertical pipe (3), and a fourth valve (10) is arranged on the second vertical pipe (4); the other end and the first pipeline (1) of first standpipe (3) are connected, first connecting pipe (17) are installed to the other end of second standpipe (4), install filter side pipe (16) on first connecting pipe (17), install second connecting pipe (18) on filter side pipe (16), the other end and first pipeline (1) fixed connection of second connecting pipe (18), filter side pipe (16) internal stability has filter (19), be provided with on the filter side pipe (16) and hit the mechanism.

2. The shunt device of claim 1, wherein: the bottom surface of the filtering square pipe (16) is provided with a sewage discharge pipe (20) in a penetrating way, and the sewage discharge pipe (20) is provided with a sealing cover (21).

3. A fine pressure control drilling pump flow divider as claimed in claim 2, wherein: the hitting mechanism comprises a fixing plate (22), the fixing plate (22) is installed on the inner wall of a filtering square pipe (16), a shaft rod (23) is connected to the fixing plate (22) in a rotating mode, the other end of the shaft rod (23) penetrates through the bottom surface of the filtering square pipe (16) and is connected with the filtering square pipe (16) in a rotating mode, a plurality of rubber rods (24) are installed at one end, located in the filtering square pipe (16), of the shaft rod (23), hitting balls (25) are installed at the other end of each rubber rod (24), and the hitting balls (25) are in contact with a filtering plate (19).

4. A fine pressure control drilling pump flow divider as claimed in claim 3, wherein: the one end that axostylus axostyle (23) are located outside filtering side's pipe (16) is installed dwang (26), set up anti-skidding line on dwang (26).

5. A fine pressure control drilling pump flow divider as claimed in claim 3, wherein: and a waterproof bearing (27) is arranged at the joint of the shaft lever (23) and the filtering square pipe (16), and the waterproof bearing (27) is sleeved on the shaft lever (23).

6. The shunt device of claim 1, wherein: and a first flow meter (9) is arranged on the first vertical pipe (3), and a second flow meter (11) is arranged on the second vertical pipe (4).

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