CN112392420A - Mud water conservancy diversion circulation system for drilling construction - Google Patents
Mud water conservancy diversion circulation system for drilling construction Download PDFInfo
- Publication number
- CN112392420A CN112392420A CN202011425889.XA CN202011425889A CN112392420A CN 112392420 A CN112392420 A CN 112392420A CN 202011425889 A CN202011425889 A CN 202011425889A CN 112392420 A CN112392420 A CN 112392420A
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- CN
- China
- Prior art keywords
- mud
- filter screen
- circulation system
- tee joint
- drilling construction
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
Abstract
The invention relates to the technical field of drilling construction, and discloses a mud diversion circulation system for drilling construction, which comprises a tee joint and an open mud tank connected with the tee joint, wherein the open mud tank comprises a shell and a partition plate arranged in the shell, sedimentation tanks are respectively formed on two sides of the partition plate of the shell, drainage ports are formed in the partition plate, filter screens are respectively arranged in each sedimentation tank, and the aperture of the filter screen far away from the tee joint in two adjacent filter screens is smaller than that of the filter screen close to the tee joint. The muddy water flows into the open mud pool after returning and upwelling from the radial interval between the tee joint and the drill rod, so that the environmental pollution caused by the overflow of the muddy water is avoided; the filter screen in each sedimentation tank carries out stage filtration to muddy water, because the aperture of the filter screen far away from the tee joint is smaller than the aperture of the filter screen close to the tee joint, the more far away from the tee joint, the smaller the granular sundries contained in the muddy water in the sedimentation tank are, and the muddy water can be prevented from blocking the inner pipe and the outer pipe when in cyclic utilization and blocking the inner pipe.
Description
Technical Field
The invention relates to the technical field of drilling construction, in particular to a mud diversion circulation system for drilling construction.
Background
Under the engineering geological survey situation that develops day by day, eliminate laggard production mode, promote the promotion of reconnaissance quality, especially subway class special investigation drilling construction, the double-barrelled coring technology has effectively improved the rate of taking of core appearance and has reduced the mobility of core appearance, but the double-barrelled coring technology has had higher requirement to the drilling water simultaneously.
Flushing circulation liquid cannot be used in drilling construction, the most common flushing circulation liquid at the present stage is muddy water which can play a role in mud wall protection and lubrication on a drill hole, and the occurrence of hole accidents such as hole crossing, collapse, buried drilling and the like in the drill hole is effectively reduced; but also can reduce the temperature of the drill bit and prolong the service life of the drill bit. Along with the continuous use of muddy water, muddy water can lead to mobility to reduce because sediment such as mud volume is more and more, and mud returns the hydrologic cycle and can't normally go on. Especially when adopting double-barrelled drilling tool to creep into, require stricter to the muddy water, double-barrelled drilling tool is because of inside and outside pipe clearance is little, just leads to the inner tube card to die easily behind a small amount of sand soil, detritus extrusion sediment, appears being difficult to get the core problem. In addition, in the drilling construction process, the problems of leakage, discharge and sediment collection and treatment of the slurry are always difficult, especially when the drilling construction is carried out on urban roads, the slurry overflows from a casing opening to pollute urban pavements and influence the appearance and appearance of the cities; untreated muddy water discharges, and even municipal drainage channels can be blocked in severe cases. The collection and treatment of the muddy water are carried out through the special mud pit, and one of key factors influencing the production efficiency and the safe and civilized construction is also formed. Along with the development of economy, the urban civilization degree is improved, and the concept of environment-friendly investigation is promoted and practiced.
The utility model discloses a chinese utility model patent that the grant bulletin number is CN205805452U discloses a mud water conservancy diversion circulating device of road drilling construction, including three way connection, the sleeve pipe, uncovered case, wherein three way connection includes three way connection sleeve pipe inserted hole, three way connection and bushing mouth, three way connection mud egress opening, three way connection passes through three way connection and bushing mouth, the mud that three way connection's three way connection mud egress opening flowed into flows into uncovered case, three way connection's three way connection sleeve pipe inserted hole is the drilling inserted hole, insert the drilling rod and carry out the probing construction to the hole bottom, through three way connection mud egress opening water conservancy diversion to uncovered case when swashing on mud that returns through three way connection and bushing mouth.
The mud diversion circulating device adopts a three-way structure, mud is recycled in the open box, but when untreated mud water returns to water for circulating drilling, the mud water can reduce the fluidity because sediment such as the mud amount is more and more, the high-pressure water pipe is blocked, and normal circulating drilling construction cannot be carried out. Especially, when a double-pipe core drill is adopted, the clearance between the inner pipe and the outer pipe (drill rod) is small, so that muddy water which is not precipitated and filtered in a muddy water tank is mixed with impurities such as granular sandy soil, rock debris and the like, and the clearance between the inner pipe and the outer pipe is easily filled after extrusion and precipitation, so that the inner pipe is blocked, coring is difficult, and the working efficiency is influenced.
Disclosure of Invention
The purpose of the invention is: the mud diversion circulation system for drilling construction is provided to solve the problem that in the prior art, when mud water is circularly drilled without being processed, a gap between an inner pipe and an outer pipe is filled, so that the inner pipe is blocked.
In order to achieve the purpose, the invention provides a mud diversion circulation system for drilling construction, which comprises a tee joint and an open mud tank, wherein the tee joint is sleeved outside a drill rod, the open mud tank is connected with the tee joint, a radial interval for returning mud is arranged between the tee joint and the drill rod, the open mud tank comprises a shell and a partition plate arranged in the shell, sedimentation tanks are respectively formed on two sides of the partition plate of the shell, a drainage port communicated with two adjacent sedimentation tanks is formed in the partition plate, filter screens are respectively arranged in each sedimentation tank, and the aperture of the filter screen far away from the tee joint in the two adjacent filter screens is smaller than that of the filter screen close to the tee joint.
Preferably, the filter screen is square open structure, have the clearance that is used for discharging muddy water between the inner wall of filter screen and sedimentation tank.
Preferably, the filter screen is provided with symmetrically arranged hangers, and the hangers are provided with hanging grooves matched with the shell.
Preferably, the hanging lug is of a U-shaped structure, and a handle is further arranged on the outer side of the hanging lug.
Preferably, the tee comprises a body and a sleeve coaxially arranged in the body, the sleeve is used for sleeving the outside of a drill rod, and the radial interval is formed between the sleeve and the drill rod.
Preferably, the sleeve is arranged at the bottom of the body, with a sealing ring arranged between the sleeve and the body.
Preferably, a roller mechanism is further arranged at the bottom of the housing.
Preferably, a drain valve is also arranged at the bottom of each settling tank.
Preferably, the shell is further provided with handles, and the handles are symmetrically arranged on two sides of the shell in the length direction.
Preferably, two partition plates are uniformly arranged along the length direction of the shell, and the two partition plates divide the shell into three sedimentation tanks along the length direction.
Compared with the prior art, the mud diversion circulation system for drilling construction has the beneficial effects that: the partition plates are arranged in the open mud pool, the open mud pool is divided into a plurality of sedimentation pools by the partition plates, and the muddy water flows into the open mud pool after returning and upwelling from the radial interval between the tee joint and the drill rod, so that the environmental pollution caused by the overflow of the muddy water can be avoided; the filter screens in the sedimentation tanks carry out graded filtration on the muddy water, and because the aperture of the filter screen far away from the tee joint is smaller than that of the filter screen close to the tee joint, the granular sundries contained in the muddy water in the sedimentation tank far away from the tee joint are smaller, so that the granular sundries contained in the sedimentation tank far away are smaller, and the blockage of the inner pipe and the outer pipe caused by the blockage of the inner pipe by the sundries can be avoided when the muddy water is recycled.
Drawings
FIG. 1 is a schematic diagram of the construction of a mud diversion circulation system for drilling construction of the present invention;
FIG. 2 is a cross-sectional view of the mud diversion circulation system of FIG. 1 for drilling operations;
fig. 3 is an enlarged schematic view of the mud diversion circulation system for drilling construction at a of fig. 2.
In the figure, 1, a tee joint; 11. a body; 12. a sleeve; 13. a seal ring; 2. opening a mud pit; 21. a housing; 22. a sedimentation tank; 3. a partition plate; 31. a drainage opening; 4. a filter screen; 41. hanging a lug; 42. a handle; 5. a drain valve; 6. a handle; 7. a roller mechanism; 71. a tire; 72. a bearing; 73. a connecting shaft; 74. a support; 75. a brake switch; 76. a connecting plate; 77. and (4) H-shaped steel.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the preferred embodiment of the mud diversion circulation system for drilling construction of the present invention, as shown in fig. 1 to 3, the mud diversion circulation system for drilling construction comprises a tee joint 1 and an open mud pit 2, the open mud pit 2 is arranged at one side of the tee joint 1, and the tee joint 1 and the open mud pit 2 are communicated with each other.
The tee joint 1 comprises a body 11 and a sleeve 12 coaxially arranged in the body 11, wherein the sleeve 12 is arranged at the bottom of the body 11, the sleeve 12 is used for being sleeved outside a drill rod, the diameter of the sleeve 12 is larger than that of the drill rod, and a radial interval for returning slurry is formed between the sleeve 12 and the drill rod. The body 11 of the tee joint 1 is used for being fixed on an operation bearing surface, the diameter of the sleeve 12 is 108mm, the diameter of the body 11 is 120mm, and the height of the body 11 is 600 mm. The drilling rod passes through the casing pipe 12 and then reaches the bottom of the hole for drilling construction, and the returned mud upwards flows into the casing pipe 12 and flows into the open mud pit 2 through the body 11 of the tee joint 1.
An annular groove is machined at the bottom end of the body 11 through a lathe, a sealing ring 13 is arranged in the annular groove, the sealing ring 13 is fixed between the body 11 and the sleeve 12, the depth of the annular groove is 5mm, and the diameter of the sealing ring 13 is 130 mm. Sealing washer 13 can increase the leakproofness between body 11 and the sleeve pipe 12, and muddy water can avoid muddy water to reveal through the gap between body 11 and the sleeve pipe 12 when returning to tee bend 1 by sleeve pipe 12 in, and the muddy water that returns to upwelling is in the uncovered mud pit 2 of tee bend 1 inflow, and uncovered mud pit 2 is for the drilling rod to mud water filtration back recirculation output, realizes that mud is not excessive.
Uncovered mud pit 2 is the rectangle structure, and uncovered mud pit 2 includes casing 21, and casing 21 is steel sheet welding formation, has arranged division board 3 in the casing 21, and division board 3 is total two, and two division boards 3 are evenly arranged along casing 21's length direction interval. The two partition plates have the same size, the thickness of each partition plate is 20mm, the height of each partition plate 3 is 40-50 mm lower than that of the shell 21, and the partition plates 3 are directly welded and fixed inside the shell 21 in a welding mode so as to ensure that the partition plates 3 are good in sealing performance.
The casing 21 is formed with sedimentation tank 22 respectively in the both sides of division board 3, and two baffles divide casing 21 equally into three sedimentation tank 22 along length direction, and three sedimentation tank 22's size and dimension are the same. The upper sides of the two partition plates 3 are respectively provided with a drainage port 31, the drainage ports 31 are communicated with two adjacent sedimentation tanks 22 at two sides of the partition plates 3, the size of the drainage port 31 on the partition plate 3 close to the tee joint 1 is 200 multiplied by 50mm, and the size of the drainage port 31 on the partition plate 3 far away from the tee joint 1 is 200 multiplied by 100 mm.
The filter screen 4 has been arranged respectively in each sedimentation tank 22, and filter screen 4 is square open structure, and filter screen 4 adopts the material to be the filter screen welding formation of 304 stainless steel preparation, and is sturdy and durable. Each filter screen 4 is formed by welding five filter screens, the length and the width of each filter screen 4 are smaller than the length and the width of the sedimentation tank 22 by 50mm, the height of each filter screen 4 is smaller than the height of the sedimentation tank 22 by 100mm, a gap for discharging muddy water is formed between each filter screen 4 and the inner wall of the sedimentation tank 22, the filtered muddy water is ensured to be smoothly discharged, and the space of at least 100mm is kept between each filter screen 4 and the bottom of the sedimentation tank 22.
Keep away from tee bend 1's filter screen 4's aperture in two adjacent filter screens 4 and be less than the aperture of being close to tee bend 1's filter screen 4, three filter screen 4's aperture reduces along the direction of keeping away from tee bend 1 in proper order promptly, in this embodiment, three filter screen 4's aperture is 10mm in proper order, 6mm and 3mm, three filter screen 4 carries out the stage filtration to muddy water, effectively remove earth and the graininess debris of not uniform size, guarantee muddy water and continuously return the water circulation and creep into, effectively reduced in, the gap between the outer tube leads to the inner tube card to die because of graininess debris extrusion sediment, be difficult to get the core risk.
Two hangers 41 are welded and fixed on the filter screen 4, the hangers 41 are welded and fixed on two sides of the filter screen 4, the hangers 41 are of U-shaped structures, inner grooves of the hangers 41 form hanging grooves matched with the shell 21, and the filter screen 4 is hung on the shell 21 through the hangers 41 and is convenient to take out the filter screen 4. Each hanging lug 41 is further respectively welded and fixed with a lifting handle 42, when sediment in the filter screen 4 needs to be cleaned, an operator can lift the whole filter screen 4 out through the lifting handles 42, and cleaning is convenient.
A drain valve 5 is further arranged at the bottom of each settling tank 22, in this embodiment, the drain valve 5 is a ball valve, and the settled and filtered muddy water can be discharged through the drain valve 5. When the sedimentation tank 22 needs to be cleaned, the cleaned waste water can be discharged by the discharge valve 5, so that the cleaning is convenient.
The four roller mechanisms 7 have the same structure, and only one set will be described here as an example. The roller mechanism 7 comprises a tire 71, a bearing 72, a connecting shaft 73, a bracket 74, a brake switch 75, a connecting plate 76 and an I-steel 77, wherein the tire 71 is rotatably assembled on the bracket 74 through the connecting shaft 73, the bearing 72 is assembled between the bracket 74 and the connecting shaft 73, the outer ring of the bearing 72 is fixedly connected with the bracket 74, and the inner ring of the bearing 72 is fixedly connected with the connecting shaft 73, so that the resistance of the tire 71 during rotation is reduced. A brake switch 75 is installed at a side of the bracket 74, and the brake switch 75 is used for locking the connecting shaft 73 when the roller mechanism 7 is required to be fixed. The top end of the bracket 74 is fixedly connected with an I-shaped steel 77 through a connecting plate 76, and the top of the I-shaped steel 77 is welded and fixed with the shell 21 of the open mud pit 2.
The working process of the invention is as follows: in the drilling construction process, a body 11 of the tee joint 1 is fixed on an operation bearing surface, a drill rod penetrates through a sleeve 12 to perform drilling, muddy water returns upwards from the radial interval between the sleeve 12 and the drill rod to the body 11 and flows into an open mud pit 2, the muddy water firstly flows into a settling pit 22 close to the tee joint 1, and mud and granular impurities of the muddy water are filtered by a filter screen 4 and then gradually settle to the bottom of the settling pit 22; when the height of the muddy water reaches the height of the drainage port 31 of the partition plate 3, the muddy water enters the adjacent sedimentation tanks 22, the processes are repeated, the muddy water is filtered by the filter screen 4 and then enters the most distal sedimentation tank 22, the muddy water is sucked from the most distal sedimentation tank 22 by a mud pump of the drilling machine and is sent to the bottom of the hole again through the drill rod, and therefore the muddy water is recycled.
In summary, the embodiment of the invention provides a mud diversion circulation system for drilling construction, which is characterized in that a partition plate is arranged in an open mud tank, the partition plate divides the open mud tank into a plurality of sedimentation tanks, mud water flows into the open mud tank after returning and upwelling from a radial interval between a tee joint and a drill rod, and environmental pollution caused by the overflow of the mud water can be avoided; the filter screens in the sedimentation tanks carry out graded filtration on the muddy water, and because the aperture of the filter screen far away from the tee joint is smaller than that of the filter screen close to the tee joint, the granular sundries contained in the muddy water in the sedimentation tank far away from the tee joint are smaller, so that the granular sundries contained in the sedimentation tank far away are smaller, and the blockage of the inner pipe and the outer pipe caused by the blockage of the inner pipe by the sundries can be avoided when the muddy water is recycled.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a drilling construction is with mud water conservancy diversion circulation system, its characterized in that, including the uncovered mud pit that is used for the cover tee bend outside the drilling rod and is connected with the tee bend, the tee bend with have between the drilling rod and be used for returning the radial interval of thick liquid, uncovered mud pit includes the casing and arranges division board in the casing, the casing in the both sides of division board are formed with the sedimentation tank respectively, set up the drainage mouth of two adjacent sedimentation tanks of intercommunication on the division board, arranged the filter screen in each sedimentation tank respectively, keep away from in two adjacent filter screens the aperture of tee bend filter screen is less than and is close to the aperture of tee bend filter screen.
2. The mud diversion circulation system for drilling construction according to claim 1, wherein said filter screen is a square open structure, and a gap for discharging muddy water is provided between said filter screen and the inner wall of said sedimentation tank.
3. The mud diversion circulation system for drilling construction as claimed in claim 2, wherein said filter screen is provided with symmetrically arranged hangers, said hangers being provided with hanging grooves adapted to said housing.
4. The mud diversion circulation system for drilling construction according to claim 3, wherein said hanger is a U-shaped structure, and a handle is further arranged on the outer side of the hanger.
5. The mud diversion circulation system for drilling construction according to any one of claims 1-4, wherein said tee comprises a body and a casing coaxially disposed within said body, said casing adapted to fit over the exterior of a drill pipe, said radial spacing being formed between said casing and drill pipe.
6. The mud diversion circulation system of claim 5 wherein said casing is disposed at the bottom of said body with a seal disposed between said casing and said body.
7. The mud diversion circulation system for drilling construction according to any one of claims 1 to 4, wherein a roller mechanism is further arranged at the bottom of said housing.
8. The diversion circulation system for drilling mud according to any one of claims 1 to 4, wherein a drain valve is further arranged at the bottom of each settling tank.
9. The mud diversion circulation system for drilling construction according to any one of claims 1 to 4, wherein handles are further arranged on said housing, and the handles are symmetrically arranged on two sides of said housing in the length direction.
10. The mud diversion circulation system for drilling construction according to any one of claims 1 to 4, wherein two of said partition plates are arranged uniformly along the length direction of said housing, and said two partition plates divide said housing into three settling ponds along the length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011425889.XA CN112392420A (en) | 2020-12-09 | 2020-12-09 | Mud water conservancy diversion circulation system for drilling construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011425889.XA CN112392420A (en) | 2020-12-09 | 2020-12-09 | Mud water conservancy diversion circulation system for drilling construction |
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| Publication Number | Publication Date |
|---|---|
| CN112392420A true CN112392420A (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011425889.XA Pending CN112392420A (en) | 2020-12-09 | 2020-12-09 | Mud water conservancy diversion circulation system for drilling construction |
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| CN (1) | CN112392420A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115518456A (en) * | 2022-09-27 | 2022-12-27 | 深圳市工勘岩土集团有限公司 | Drilling anti-flushing liquid overflow circulation structure |
-
2020
- 2020-12-09 CN CN202011425889.XA patent/CN112392420A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115518456A (en) * | 2022-09-27 | 2022-12-27 | 深圳市工勘岩土集团有限公司 | Drilling anti-flushing liquid overflow circulation structure |
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