CN109372431A - One kind can continuous deflecting jet bit - Google Patents
One kind can continuous deflecting jet bit Download PDFInfo
- Publication number
- CN109372431A CN109372431A CN201811316739.8A CN201811316739A CN109372431A CN 109372431 A CN109372431 A CN 109372431A CN 201811316739 A CN201811316739 A CN 201811316739A CN 109372431 A CN109372431 A CN 109372431A
- Authority
- CN
- China
- Prior art keywords
- bit
- bit body
- drilling
- positive cover
- supporting positive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
- E21B7/064—Deflecting the direction of boreholes specially adapted drill bits therefor
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
Abstract
One kind can continuous deflecting jet bit, including bit body, bit body upper end is connect with drilling rod, bit body is equipped with centre bore, and the lower end setting drilling end of bit body, the gabarit for creeping into end is the cylinder of non-full circle, several injection inclined holes are equipped on the periphery of the cylinder, injection inclined hole is connected to centre bore, and stock tank is returned on axially disposed periphery between adjacent injection inclined hole, and the side for creeping into the non-cylindrical at end is equipped with the guiding surface shunk to the inclination of drilling end end position.The present invention is crept by the way of sliding, drill bit is without rotary motion during drilling, if the drilling end for fully relying on static thrust and drill bit be located at the dry-spray inclined hole on periphery and be located in the injection of heart nozzle the effective unconsolidated formation of mud, so that jet bit is efficiently crept into middle hard stratum along certain angle under the action of static thrust.Swing mechanism is arranged without matching used drilling tool in drill bit of the present invention, so can simplify the structure of drilling tool, improves drilling tool functional reliability and service life.
Description
Technical field
It is especially a kind of without turning round can continuously making for cutting drilling the present invention relates to a kind of drill bit for geology drilling
Tiltedly use jet bit.
Background technique
Currently, no-dig technique and directional well field controlled directional drilling technology using more and more extensive, promising directional drilling
Purpose and carry out drilling kick-off, promising processing drilling accident carries out deflecting, promising to be laid with, replace and repair various underground utilities
When do not influence traffic above-ground, building etc. and carry out deflecting.The drilling kick-off no matter carried out for which kind of mesh, deflecting used are drilled with
Two class of screw drill and non-excavation-use starter.It needs stratum to support when screw drill deflecting, therefore is generally only applicable in
In compared with hard formation, and non-excavation-use starter is suitable only for softer using the complex method of static push and rotary drilling drilling
Stratum, soil layer drilling effect higher for hardness are poor.In addition, above-mentioned two classes drill bit requires to be equipped with corresponding whirler
Structure, to complete the rotary motion of drill bit in drilling process.
Summary of the invention
It is an object of the invention to aiming at the disadvantages of the prior art, provide one kind be suitable in hard and Soft Soil Layer, be not necessarily to back
Turn to cut drilling, it is only necessary to which what injection cutting, sliding were fed can continuous deflecting jet bit.
Problem of the present invention is solved with following technical proposals:
One kind can continuous deflecting jet bit, including bit body, bit body upper end connect with drilling rod, during bit body is equipped with
Heart hole, the lower end setting drilling end of bit body, the gabarit for creeping into end is the cylinder of non-full circle, is equipped with number on the periphery of the cylinder
A injection inclined hole, injection inclined hole are connected to centre bore, and stock tank is returned on axially disposed periphery between adjacent injection inclined hole, creeps into end
The side of non-cylindrical is equipped with the guiding surface shunk to the inclination of drilling end end position.
It is above-mentioned can continuous deflecting jet bit, solid-holding slot is equipped with by drilling end end to bit body lower part, solid-holding slot is
The arch groove that relative axis is obliquely installed, solid-holding slot top are equipped with nozzle, and nozzle is through hole link centre bore.
It is above-mentioned can continuous deflecting jet bit, be equipped with center in the axial direction in guiding surface and arc solid-holding slot intersection and put down
Return stock tank in the recessed top in face direction.
It is above-mentioned can continuous deflecting jet bit, be fixed with supporting positive cover and lower supporting positive cover, lower righting on the bit body
The circumferential position of set is corresponding up and down with guiding surface, and the center of upper supporting positive cover differs 180 ° with lower supporting positive cover center.
It is above-mentioned can continuous deflecting jet bit, upper supporting positive cover and lower supporting positive cover are all three-stage, i.e., by the short semicircle in top
Bore section, the short long conical section composition of middle part cylindrical section and lower part.
Above-mentioned continuously deflecting jet bit, the bit body to be equipped with bit body intermediate incline, bit body transition is oblique
Face, which is returned to tilt at stock tank from lower supporting positive cover lower to upper part, to be extended, corresponding, drill bit above and below bit body intermediate incline and guiding surface
Stock tank is returned with top and is connect in the lower end of body intermediate incline.
Above-mentioned can deflecting jet bit, the inclination angle of the guiding surface to axial be continuously 2 ° -10 °, the injection
The inclination angle of inclined hole relative axis is 10 ° -25 °, and the inclination angle of the solid-holding slot relative axis is 15 ° -45 °, the bit body transition
The inclination angle of inclined-plane relative axis is 2-10 °.
It is above-mentioned can continuous deflecting jet bit, the number for spraying inclined hole is 5-8, and the number of nozzle is 1-4.
Jet bit of the present invention for deflecting, is crept by the way of sliding, drill bit during drilling
Without rotary motion, if the drilling end for fully relying on static thrust and drill bit is located at the dry-spray inclined hole and centrally located nozzle on periphery
The effective unconsolidated formation of the mud of injection keeps jet bit efficient along certain angle in middle hard stratum under the action of static thrust
Drilling.The jet bit is equipped with upper and lower supporting positive cover, and upper supporting positive cover can effectively prevent drill bit to send out with lower supporting positive cover in drilling process
It gives birth to and inclines or face upward, in addition, lower supporting positive cover can also play the role of repairing hole in drilling process, keep the shape for boring metapore round.
The drill bit is equipped with solid-holding slot, stock tank is returned on periphery and stock tank is returned on top, and the slurry that drilling process generates is returned by solid-holding slot through periphery
Stock tank discharge is returned on stock tank and top, to guarantee that drilling process is normally carried out.Drill bit of the present invention is arranged without matching used drilling tool
Swing mechanism improves drilling tool functional reliability and service life so can simplify the structure of drilling tool.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings.
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the bottom view of Fig. 1；
Fig. 3 is the A-A cross-sectional view of Fig. 2；
Fig. 4 is the structural schematic diagram of bit body part with drilling end；
Fig. 5 is the bottom view of Fig. 4；
Fig. 6 is the B-B cross-sectional view of Fig. 5；
Fig. 7 is the structural schematic diagram of upper supporting positive cover；
Fig. 8 is intended to the structural schematic diagram of supporting positive cover；
Fig. 9 is axonometric drawing of the invention.
Each label in figure are as follows: 1, bit body, 1-1, bit body intermediate incline, 2, upper supporting positive cover, 3, lower supporting positive cover, 4, drilling
End, 4-1, injection inclined hole, 4-2, periphery return stock tank, and 4-3, solid-holding slot, 4-4, guiding surface, 4-5, top return stock tank, 5, nozzle.
Specific embodiment
Referring to Fig. 1-Fig. 6 and Fig. 9, it is of the present invention can continuous deflecting jet bit be equipped with bit body 1, bit body it is upper
End is connect with drilling rod, and bit body is equipped with centre bore 1-2.At the lower end of bit body setting drilling end 4, it is non-whole for creeping into the gabarit at end
The cylindrical surface portion of round cylinder, the cylinder is greater than semicolumn.The side for creeping into the non-cylindrical at end is equipped with to drilling end end head
The guiding surface 4-4 that position inclination is shunk, the inclination angle of guiding surface relative axis are 2-10 °.The lower end surface for creeping into end is the conical surface.When
When drilling rod pressurizes to bit body, active force is converted into the component of both direction at drilling end, and a component is oblique perpendicular to guiding
One component of angle in face, guiding surface is parallel to guiding surface, under the action of drilling rod and stratum double reaction plus, bit body
Direction transformation occurs along certain angle and starts deflecting.Drilling end periphery be equipped with several injection inclined hole 4-1, spray inclined hole and
Centre bore connection, the inclination angle of injection inclined hole relative axis are 10-25 °, and slurry is returned on axially disposed periphery between adjacent injection inclined hole
Slot 4-2.The number of injection inclined hole, which is 5-8, to be advisable, and the number that inclined hole is sprayed in illustrated embodiment is six.By creeping into end end
It is equipped with solid-holding slot 4-3 to bit body lower part, solid-holding slot is the cambered surface groove that relative axis is obliquely installed, and solid-holding slot top is equipped with spray
Mouth 5, nozzle are 1-4 through hole link centre bore, the number of nozzle, and nozzle is arranged two in illustrated embodiment.It is oblique in guiding
Face and arc solid-holding slot intersection are equipped with the top that central plane direction is recessed in the axial direction and return stock tank 4-5.In drilling process, mud
The centre bore of bit body is flowed through to be sprayed by nozzle and injection inclined hole, ejection mud to the jet power of hole wall, drilling rod thrust and
Under three gravity of formation reaction, drill bit can efficiently creep into deflecting along certain angle.Stock tank is returned for drilling process in periphery
It is returned in middle periphery slurry, the slurry being stored in solid-holding slot in drilling process is returned by top and returned on stock tank.
Referring to Fig. 1 and Fig. 7-Fig. 9, supporting positive cover 2 and lower supporting positive cover 3, the circumferential position of lower supporting positive cover are fixed on bit body
Set with guiding surface up and down it is corresponding, the center of upper supporting positive cover differs 180 ° with lower supporting positive cover center.Upper supporting positive cover and lower supporting positive cover
It is divided into two to obtain by a complete cylindrical sleeve, the inner surface of upper and lower supporting positive cover is bonded with the matching of the outer surface of bit body.On
Supporting positive cover and lower supporting positive cover are all three-stage, i.e., are made of the short half-conical section in top, the long conical section of middle part cylindrical section and lower part.In
The radius of portion's cylindrical section is matched with the radius of drilling end cylindrical surface portion.Bit body is equipped with bit body intermediate incline 1-1, drill bit
Body intermediate incline from lower supporting positive cover lower to upper part return at stock tank tilt extend, bit body intermediate incline with it is right above and below guiding surface
It answers, the lower end of bit body intermediate incline is returned stock tank with top and connect.Upper and lower supporting positive cover primarily serves centralizing function in drilling process,
Prevent drill bit from tilting down or facing upward, lower supporting positive cover and bit body intermediate incline can also repair drilling in drilling process
It mends, drilling is made to become circle.
Claims (8)
1. one kind can continuous deflecting jet bit, including bit body (1), bit body upper end connect with drilling rod, it is characterised in that:
Bit body is equipped with centre bore (1-2), lower end setting drilling end (4) of bit body, and the gabarit for creeping into end is the cylinder of non-full circle,
The periphery of the cylinder is equipped with several injection inclined holes (4-1), and injection inclined hole is connected to centre bore, along axis between adjacent injection inclined hole
Stock tank (4-2) is returned to setting periphery, the side for creeping into the non-cylindrical at end is equipped with the guiding shunk to the inclination of drilling end end position
Inclined-plane (4-4).
2. according to claim 1 can continuous deflecting jet bit, it is characterised in that: by drilling end end to bit body
Lower part is equipped with solid-holding slot (4-3), and solid-holding slot is the arch groove that relative axis is obliquely installed, and solid-holding slot top is equipped with nozzle (5), spray
Mouth is through hole link centre bore.
3. according to claim 2 can continuous deflecting jet bit, it is characterised in that: in guiding surface and arc solid-holding
Slot intersection is equipped with the top that central plane direction is recessed in the axial direction and returns stock tank (4-5).
4. according to claim 3 can continuous deflecting jet bit, it is characterised in that: be fixed on the bit body
Supporting positive cover (2) and lower supporting positive cover (3), the circumferential position of lower supporting positive cover is corresponding up and down with guiding surface, the center of upper supporting positive cover and
Lower supporting positive cover center differs 180 °.
5. according to claim 4 can continuous deflecting jet bit, it is characterised in that: upper supporting positive cover and lower supporting positive cover are same
For three-stage, i.e., it is made of the short half-conical section in top, the short long conical section of middle part cylindrical section and lower part.
6. according to claim 5 can continuous deflecting jet bit, it is characterised in that: the bit body is equipped with drill bit
Body intermediate incline (1-1), bit body intermediate incline, which returns to tilt at stock tank from lower supporting positive cover lower to upper part, to be extended, bit body transition
Inclined-plane is corresponding up and down with guiding surface, and the lower end of bit body intermediate incline is returned stock tank with top and connect.
7. according to claim 6 can continuous deflecting jet bit, it is characterised in that: the guiding surface relative axis
Inclination angle be 2-10 °, it is described injection inclined hole relative axis inclination angle be 10-25 °, the inclination angle of the solid-holding slot relative axis is
15-45 °, the inclination angle of the bit body intermediate incline relative axis is 2-10 °.
8. according to claim 7 can continuous deflecting jet bit, it is characterised in that: the number for spraying inclined hole is 5-8
A, the number of nozzle is 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811316739.8A CN109372431A (en) | 2018-11-07 | 2018-11-07 | One kind can continuous deflecting jet bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811316739.8A CN109372431A (en) | 2018-11-07 | 2018-11-07 | One kind can continuous deflecting jet bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109372431A true CN109372431A (en) | 2019-02-22 |
Family
ID=65397894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811316739.8A Pending CN109372431A (en) | 2018-11-07 | 2018-11-07 | One kind can continuous deflecting jet bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109372431A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1469524A (en) * | 1973-03-05 | 1977-04-06 | Shell Int Research | Rotary bit for hydraulically drilling holes into underground formations |
| US4633958A (en) * | 1985-02-04 | 1987-01-06 | Mouton David E | Downhole fluid supercharger |
| CN102409980A (en) * | 2011-12-22 | 2012-04-11 | 河南神龙石油钻具有限公司 | Blade type PDC (Polycrystalline Diamond Compact) drill bit |
| CN203081294U (en) * | 2013-03-11 | 2013-07-24 | 广州电力建筑安装工程有限公司 | Drilling tool of trenchless rig for guided construction in silty soil layer |
| CN105089506A (en) * | 2015-09-18 | 2015-11-25 | 洛阳中岩工程材料有限公司 | Double-layer cross-shaped self-drilling anchor bolt drill bit |
| CN105089499A (en) * | 2015-09-11 | 2015-11-25 | 平顶山天安煤业股份有限公司 | Coal mine downhole hydraulic jet tree-shaped drill hole guide device and method |
| CN209293681U (en) * | 2018-11-07 | 2019-08-23 | 广州海洋地质调查局 | A kind of directional inclination jet bit |
-
2018
- 2018-11-07 CN CN201811316739.8A patent/CN109372431A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1469524A (en) * | 1973-03-05 | 1977-04-06 | Shell Int Research | Rotary bit for hydraulically drilling holes into underground formations |
| US4633958A (en) * | 1985-02-04 | 1987-01-06 | Mouton David E | Downhole fluid supercharger |
| CN102409980A (en) * | 2011-12-22 | 2012-04-11 | 河南神龙石油钻具有限公司 | Blade type PDC (Polycrystalline Diamond Compact) drill bit |
| CN203081294U (en) * | 2013-03-11 | 2013-07-24 | 广州电力建筑安装工程有限公司 | Drilling tool of trenchless rig for guided construction in silty soil layer |
| CN105089499A (en) * | 2015-09-11 | 2015-11-25 | 平顶山天安煤业股份有限公司 | Coal mine downhole hydraulic jet tree-shaped drill hole guide device and method |
| CN105089506A (en) * | 2015-09-18 | 2015-11-25 | 洛阳中岩工程材料有限公司 | Double-layer cross-shaped self-drilling anchor bolt drill bit |
| CN209293681U (en) * | 2018-11-07 | 2019-08-23 | 广州海洋地质调查局 | A kind of directional inclination jet bit |
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