CN211115859U

CN211115859U - Mud circulation system

Info

Publication number: CN211115859U
Application number: CN201922034621.2U
Authority: CN
Inventors: 李林春; 刘杰; 郑文全; 高彦明; 龚雅琪; 卢强红; 杨永林; 俱涛; 王天宇; 由咪娜
Original assignee: Sinohydro Bureau 5 Co Ltd
Current assignee: Sinohydro Bureau 5 Co Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-28
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a mud circulation system, including the probing part, circulation part and regulation part, the circulation part is including setting up in drilling rod one side and with the sedimentation tank of boring pit intercommunication and setting up in the sedimentation tank opposite side and with the mud tank of sedimentation tank intercommunication, the one end of connecting pipe is connected with the drill bit through sending the thick liquid pipe, the other end sets up in the mud tank and the end part is equipped with the slush pump, the regulation part includes the pressure regulating box, and the pressure regulating box includes the box, the vertical pivot that stretches into the box inside, the pivot is connected with the clamp plate through the connecting block, the clamp plate below is equipped with vertical threaded rod, the threaded rod passes behind the L type fly leaf of horizontal placement and is connected with the stopper, the side connector is plugged up to the vertical face of fly leaf, the utility model discloses simple structure, the material of choosing is common material, and low in cost has practiced thrift a large amount of construction cost for the engineering construction, and system operation is simple, and easy.

Description

Mud circulation system

Technical Field

The utility model relates to a mud circulating equipment technical field especially relates to a mud circulating system.

Background

The mud circulating system is an essential important component of drilling equipment, and during drilling operation of an oil well and a water well, power is input by a power unit to drive a drilling pump, so that drilling fluid is pumped through a ground high-pressure manifold, flows through a vertical pipe, a hose, a water tap, a drill rod, a drill bit and the like to reach the bottom of the well, and rock debris carrying drilling debris at the bottom of the well flows through an annular space between the drill rod and the wall of the well and returns to the ground. The drilling fluid is purified and then pumped to the bottom of the well again for repeated circulation, so that a good working environment is created for the drill bit at the bottom of the well. When the hole depth is not too deep, the drilling efficiency is high when the hole diameter is smaller. When the aperture is larger, the annular section between the drill rod and the hole wall is larger, the backflow speed is low during slurry circulation, and the slag discharge capacity is weak.

The mud circulating system mainly comprises oil drilling solid control equipment and a complete mud circulating system, wherein the oil drilling solid control equipment comprises a drilling fluid vibrating screen, a vacuum degasser, a desander, a deslimitor, a desander, a desanding and desliming integrated machine, a liquid-gas separator, a stirrer, a sand pump, a shear pump, a centrifugal machine, an electronic ignition device, a mixing hopper, a jet flow mixing device, a mud tank and the like, and is also suitable for mud circulating operation in oil well and water well drilling.

The conventional slurry circulating system generally has the cost of tens of thousands to hundreds of thousands, and the construction cost is high due to the high price, so that the slurry circulating system with low cost and simple structure is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the technical scheme of the utility model is that the mud circulation system comprises a drilling part, a circulation part and an adjusting part, wherein the drilling part comprises a drill rod, the drill rod comprises a host and a drill bit arranged at the bottom of the drill rod, the circulation part comprises a sedimentation tank arranged on one side of the drill rod and communicated with a drilling pit, a mud tank arranged on the other side of the sedimentation tank and communicated with the sedimentation tank, the mud circulation system further comprises a connecting pipe, one end of the connecting pipe is connected with the drill bit through a mud feeding pipe, the other end of the connecting pipe is arranged in the mud tank, the end part of the connecting pipe is provided with a mud pump, the adjusting part comprises a pressure adjusting box, the pressure adjusting box is communicated with the connecting pipe through a side connecting port and a bottom connecting port, the pressure adjusting box comprises a box body and a rotating shaft vertically extending into the box body, the rotating shaft is connected with a pressing plate through a connecting block, a vertical threaded rod is arranged below the pressing plate, the.

Particularly, the drill bit is symmetrically provided with inclined struts, the bottom of each inclined strut is sequentially connected with an upper waistline and a lower waistline, an inclined baffle is arranged between the upper waistline and the inclined struts, the bottom of the lower waistline is provided with a scraper, the bottom of the scraper is provided with an advanced drill, and the advanced drill is provided with a grout outlet.

Particularly, the adjusting part also comprises a depth adjusting frame connected with the mud pump, the depth adjusting frame comprises two supporting rods hinged with each other at the top, an adjusting frame track is arranged below the supporting rods, and a positioning through hole is arranged on the adjusting frame track; the supporting rod is sleeved outside the adjusting frame rail through a U-shaped groove at the bottom end and fixed through a bolt, a bolt and a positioning through hole.

Particularly, the sedimentation tank and the mud tank are provided with three layers of filter screens with the aperture from large to small, and a top cover is arranged above the filter screens.

The utility model has the advantages that: the device has the advantages of simple structure, low manufacturing cost due to the fact that the selected materials are common materials, a large amount of construction cost is saved for engineering construction, system operation is simple, maintenance is convenient, and required use effect can be achieved.

Drawings

Fig. 1 is a schematic structural diagram of a slurry circulation system of the present invention.

Fig. 2 is a schematic structural diagram of a drill bit of the mud circulation system of the present invention.

Fig. 3 is a schematic structural diagram of a pressure regulating box of a slurry circulating system of the present invention.

As shown in the figure: a drill rod-1; a slurry feeding pipe-2; a host-3; a drill-4; a sedimentation tank-51; a mud pit-52; a submersible slurry pump-6; a slurry pump-7; a connecting pipe-8; the side surface is connected with a borrow-81; bottom surface connecting port-82; a pressure regulating tank-9; a box body-91; a rotating plate-92; a shaft-93; a platen-94; a spring rod-95; a connecting block-96; a movable plate-97.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

With reference to fig. 1, 2 and 3, a slurry circulation system comprises a drilling part, a circulation part and an adjusting part, wherein the drilling part comprises a drill stem 1, the drill stem 1 comprises a host machine 3 and a drill bit 4 arranged at the bottom of the drill stem 1, the circulation part comprises a sedimentation tank 51 arranged on one side of the drill stem 1 and communicated with a drilling pit, a slurry tank 52 arranged on the other side of the sedimentation tank 51 and communicated with the sedimentation tank 51, a connecting pipe 8 is further arranged, one end of the connecting pipe 8 is connected with the drill bit 4 through a slurry conveying pipe 2, the other end of the connecting pipe 8 is arranged in the slurry tank 52, the end part of the connecting pipe is provided with a submersible slurry pump 6 and a slurry pump 7, slurry enters the drilling part through the slurry pump 7 and the submersible slurry pump 6 through the connecting pipe 8 and then reaches the drill bit through the slurry conveying pipe 2 for cooling and lubricating during drilling of the drill bit, the adjusting part comprises a pressure adjusting box 9, the pressure adjusting box 9 is communicated with the connecting pipe 8 through a side connecting port 81 and a bottom surface 82, the pressure adjusting box 9 comprises a box body 91, a rotating shaft 93 vertically extending into the box 91, a thread 93 matched with the rotating plate 91, the rotating shaft 94 is arranged on the rotating shaft, the rotating plate 97 is connected with the rotating plate 97, the rotating plate 94, the rotating plate 97 is connected with the rotating plate 97, and the rotating plate 97 is connected with the rotating plate 97, and the rotating plate 97.

As a preferred embodiment, the drill 4 is symmetrically provided with inclined struts 42, the bottom of each inclined strut 42 is sequentially connected with an upper waistline 44 and a lower waistline 45, an inclined baffle 43 is arranged between the upper waistline 44 and the inclined struts 42, the bottom of the lower waistline 45 is provided with a scraper 47, the bottom of the scraper 47 is provided with an advanced drill 46, and the advanced drill 46 is provided with a grout outlet 41; the upper waistline 44, the lower waistline 45 and the inclined baffle 43 mainly play roles of protection and support; the scrapers 47 primarily serve to collect and agitate the drill cuttings drilled by the pilot drill 46 to facilitate the flow of mud to carry the cuttings out of the pit.

As a preferred embodiment, the adjusting part further comprises a depth adjusting bracket 71 connected with the mud pump 7, the depth adjusting bracket 71 comprises two support rods hinged to each other at the top, an adjusting bracket rail 72 is arranged below the support rods, and a positioning through hole is arranged on the adjusting bracket rail 72; the supporting rod is sleeved outside the adjusting frame rail 72 through a U-shaped groove at the bottom end and is fixed through a bolt, a bolt and a positioning through hole; the position of the support rod on the adjusting frame rail 72 can be adjusted to adjust the depth of the submersible slurry pump 6 and the slurry pump 7 immersed in the slurry pool 52, so that the submersible slurry pump 6 and the slurry pump 7 are always positioned at the position close to the water surface in the slurry pool 52, and large drilling slag is prevented from being sucked into the connecting pipe 8.

As a preferred embodiment, the sedimentation tank 51 and the slurry tank 52 are provided with three layers of filter screens 73 with the pore diameters from large to small, and a top cover 74 is arranged above the filter screens; the drilling slag with larger grain diameter which is not deposited in the sedimentation tank 51 is filtered by the three layers of filter screens 73, so that the granularity and the slag content of the slurry in the whole slurry circulating system can be ensured; the top cover 74 is used for cleaning the drilling slag in the sedimentation tank 51 and on the filter screen 73 regularly.

The utility model discloses when concrete implementation, mud is pumped by slush pump 7 from the supply pond, and input connection pipe 8 is sent to the import of 1 upper portions of drilling rod, injects 1 head of rotatory hollow drilling rod into via sending thick liquid pipe 2, and a direct current discharges to 4 bottoms of drill bits, and drill bit 4 in the rotation is lubricated mud to with mud diffusion to whole hole bottom, take with the drilling ballast float to the drilling top, overflow row to sedimentation tank 51 from the hole top. When the drilling tool is used, a proper place is selected, a place which is smooth and convenient for installing a drilling frame is drilled, then a pile casing is embedded, the pile position can be fixed by the pile casing, the drilling guide is made, an orifice is protected, the soil layer of the orifice is prevented from collapsing, the water on the outer surface layer of the inner hole is isolated, then slurry can be prepared, the slurry generates larger hydrostatic pressure when drilling, the collapse hole can be prevented, the slurry leaks to the soil layer outside the hole, in the drilling process, due to the movement of a drill bit 4, a layer of cement is formed on the surface of the wall of the hole, the wall protection effect is achieved, meanwhile, the water flow inside and outside the hole is cut off, the water level inside the hole can be stabilized, the specific gravity of the slurry is high, the effect of carrying drilling slag is achieved, the drilling tool is beneficial to discharge; and then, a drilling machine can be installed, soil body drilling is cut by utilizing the rotation of the drilling tool, and wall protection and slag removal are simultaneously carried out by adopting a mud circulation method. During drilling, the mud pump 7 presses mud into the drill bit 4, the mud enters the drill hole from the mud outlet 41 of the drill bit 4 through the center of the drill rod 1, the mud carries drilling slag and rises along the drill hole, the mud is discharged to the sedimentation tank 51 from the mud discharge hole at the top of the casing, the drilling slag is settled at the position, the mud still enters the mud tank 52 for recycling, the equipment is simple, the operation is convenient, the process is mature, and the drilling efficiency is high when the hole depth is not too deep and the hole diameter is small. When the aperture is great, the annular section between drilling rod and the hole wall is great, the reflux speed is low during mud circulation, the slag discharge capacity is weak, therefore at the in-process of mud circulation, can adjust the flow of mud, carry out flow control through pressure regulating box 9, drive pivot 93 through rotating whirl board 92 and stretch into in box 91 and stretch out, when pivot 93 stretches into box 91, drive fly leaf 97 descends, the side connector 81 of connecting pipe 8 is stopped up in the shutoff, when pivot 93 upwards stretches out, drive fly leaf 97 and open the side connector 81 of connecting pipe 8, thereby the size of control flow.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The mud circulation system is characterized by comprising a drilling part, a circulation part and an adjusting part, wherein the drilling part comprises a drill rod (1), the drill rod (1) comprises a host (3) and a drill bit (4) arranged at the bottom of the drill rod (1), the circulation part comprises a sedimentation tank (51) arranged on one side of the drill rod (1) and communicated with a drilling pit, a mud tank (52) arranged on the other side of the sedimentation tank (51) and communicated with the sedimentation tank (51), the mud circulation system also comprises a connecting pipe (8), one end of the connecting pipe (8) is connected with the drill bit (4) through a mud conveying pipe (2), the other end of the connecting pipe is arranged in the mud tank (52), a submersible mud pump (6) and a mud pump (7) are arranged at the end part of the connecting pipe, the adjusting part comprises a pressure adjusting box (9), the pressure adjusting box (9) is communicated with the connecting pipe (8) through a side surface connecting port (81) and a bottom surface (82), the pressure adjusting box (9) comprises a box body (91) and a rotating shaft (93) vertically extending into the box body (91), the rotating shaft (93) is arranged on a horizontal connecting port (97), and a movable plate (95) is arranged below the vertical connecting block (95) and is connected with a movable plate (95) and a spring plate (97) arranged below the vertical connecting block (97).

2. A mud circulation system according to claim 1, wherein: the drill bit (4) is provided with inclined struts (42) symmetrically, the bottom of the inclined struts (42) is sequentially connected with an upper waistline (44) and a lower waistline (45), inclined baffles (43) are arranged between the upper waistline (44) and the inclined struts (42), the bottom of the upper waistline (45) is provided with a scraper (47), the bottom of the scraper (47) is provided with an advance drill (46), and a grout outlet (41) is formed in the advance drill (46).

3. The mud circulation system of claim 1, wherein the adjusting part further comprises a depth adjusting bracket (71) connected with the mud pump (7), the depth adjusting bracket (71) comprises two support rods hinged to each other at the top, an adjusting bracket rail (72) is arranged below the support rods, and a positioning through hole is arranged on the adjusting bracket rail (72); the supporting rod is sleeved outside the adjusting frame rail through a U-shaped groove at the bottom end and fixed through a bolt, a bolt and a positioning through hole.

4. A mud circulation system according to claim 1, wherein the settling tank (51) and the mud tank (52) are provided with three layers of screens (73) with gradually decreasing pore sizes, and a top cover (74) is arranged above the screens.