CN203499565U - Reverse circulation air hammer drill bit - Google Patents
Reverse circulation air hammer drill bit Download PDFInfo
- Publication number
- CN203499565U CN203499565U CN201320556728.3U CN201320556728U CN203499565U CN 203499565 U CN203499565 U CN 203499565U CN 201320556728 U CN201320556728 U CN 201320556728U CN 203499565 U CN203499565 U CN 203499565U
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- drill body
- outlet
- drill bit
- air hammer
- sediment outflow
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- 230000000694 effects Effects 0.000 claims abstract description 15
- 239000013049 sediment Substances 0.000 claims description 39
- 238000009792 diffusion process Methods 0.000 claims description 18
- 239000000956 alloy Substances 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000004576 sand Substances 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 238000002347 injection Methods 0.000 abstract 2
- 239000007924 injection Substances 0.000 abstract 2
- 241001074085 Scophthalmus aquosus Species 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 102000016938 Catalase Human genes 0.000 description 1
- 108010053835 Catalase Proteins 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a reverse circulation air hammer drill bit, which comprises a drill bit body, wherein the drill bit body is provided with an air inlet channel, an internal injection hole and a central sand discharge channel, the air outlet of the air inlet channel is positioned on the bottom surface of the drill bit body, the inlet of the internal injection hole is communicated with the air inlet channel, the outlet is communicated with the central sand discharge channel, and the distance between the inlet and the bottom surface of the drill bit body is smaller than the distance between the outlet and the bottom surface of the drill bit body; under the action of gas sprayed from the gas outlet of the gas inlet channel, the central sand discharge channel discharges the rock debris from the bottom surface to the top of the drill bit body. The utility model discloses have good reverse circulation sand discharging effect, possess certain prevention simultaneously and handle the ability of lost circulation and drill bit card brill accident.
Description
Technical field
The utility model relates to a kind of anti-circulated air hammer bit, supports the use with anti-circulated air hammer, " the air reverse circulation drilling of well that can be used for 26.
Background technology
In recent years, gas direct circulation drilling technology has been obtained remarkable result at aspects such as administering leakage, protection reservoir, raising rate of penetration.At present, air hammer drilling technology obtains comparatively extensive use in hard and super hard-rock layer, low pressure and easy leaking stratum and high grinding stratum, becomes petroleum exploration domain speed-raising, hold angle, prevents one of effective means that down-hole accident occurs.Meanwhile, it is circulatory mediator that air hammer drilling well has adopted inexhaustible air, can contaminated oil gas-bearing formation.For example, the disclosed a kind of gauge hammer drilling bit of China Patent No. " CN201020565193.2 ", open day is on 05 18th, 2011, by bit body, end tooth, heel teeth, formed, the bottom of drill bit is the face of cylinder, top is taper seat, on the face of cylinder of drill bit, is inlaid with gauge teeth, inlays gauge teeth on taper seat.For another example, China Patent No. " CN201110261261.5 " discloses a kind of directional rotating air hammer, open day is on 02 01st, 2012, mainly interrupter, distribution rotating mechanism, piston component and drill bit, consist of, interrupter comprises top connection, swivel coupling, non retern valve, spring, spring base placement spool, spring base and shell; Distribution rotating mechanism is located in interrupter, comprise gyroaxis, distribution seat, air inlet pipe, rear air cavity and front air cavity, distribution seat end face is fixedly connected with spring base, on bottom surface, in annular array mode, be furnished with a plurality of zigzag convex cones, air inlet pipe upper end is connected on distribution seat, lower end is stretched in piston component, is provided with air inlet port in air inlet pipe; Piston component is located in interrupter, comprise piston, snap ring and snap ring half, at piston-top surface, in annular array mode, be furnished with a plurality of convex cones that match with distribution seat bottom surface zigzag convex cone, on piston, be radially provided with the air inlet that leads to respectively rear air cavity and front air cavity; Drill bit is by spline joint on spline joint, and the afterbody of drill bit is connected with drill bit tail pipe.
But above-mentioned hammer drilling bit is gas direct circulation Pneumatic hammer for well drilling drill bit.There are the following problems at present for gas direct circulation drilling technology: when big size hole drilling well, direct circulation gas drilling required large-minded, number of devices is many, high in cost of production has become common problem.Meanwhile, during conventional gas drilling well, high-speed gas is obvious to borehole wall erosion, in the condition of the hole instability content of going into the well, is prone to " pregnant ".In addition, if down-hole water layer, drop ply exist simultaneously, easily occur leaking and do not leak the situation of sand, be difficult to set up circulation.
Summary of the invention
The purpose of this utility model is to overcome existing hammer drilling bit and is applied in the problems referred to above that exist in gas direct circulation drilling technology, a kind of anti-circulated air hammer bit is provided, the utlity model has good anti-circulation sediment outflow effect, possess certain prevention and the ability of processing leakage and drill bit bit freezing simultaneously.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of anti-circulated air hammer bit, comprise drill body, it is characterized in that: on drill body, be provided with inlet channel, inner perforation and center sediment outflow passage, the gas outlet of inlet channel is positioned on the bottom surface of drill body, the entrance of inner perforation is communicated with inlet channel, outlet and center sediment outflow channel connection, and the distance between entrance and the bottom surface of drill body is less than the distance between outlet and the bottom surface of drill body; Under the gas effect of the gas outlet of inlet channel ejection, center sediment outflow passage is discharged by drill body bottom surface landwaste to top.
Described inlet channel comprises keyway and bottom surface spray-hole, and keyway is arranged on drill body top, and the entrance of described bottom surface spray-hole is communicated with keyway, and outlet is positioned on the bottom surface of drill body.
The entrance of described inner perforation is arranged in keyway, and outlet is arranged in center sediment outflow passage.
Described drill body lower peripheral has interface channel around center sediment outflow channel setting, and drill body top is run through in sediment outflow passage one end, center, and the other end is connected on drill body bottom surface by interface channel.
Described drill body is provided with diffusion groove on bottom surface, and the outlet of bottom surface spray-hole is arranged in diffusion groove, and the landwaste entrance of interface channel is communicated with diffusion groove.
The external cylindrical surface of described drill body bottom is provided with carbide alloy gauge teeth, and drill body bottom face is provided with hard alloy spherical-teeth.
Described drill body bottom has radially been evenly arranged anti-draw-in groove, and described anti-draw-in groove is three.
Described inner perforation is six holes that are evenly distributed on drill body top, with keyway corresponding setting one by one; Bottom surface spray-hole is six holes that are evenly distributed on drill body bottom, with the corresponding setting one by one of diffusion groove.
Employing the utility model has the advantage of:
One, in the utility model, on drill body, be provided with inlet channel, inner perforation and center sediment outflow passage, the gas outlet of inlet channel is positioned on the bottom surface of drill body, the entrance of inner perforation is communicated with inlet channel, outlet and center sediment outflow channel connection, and the distance between entrance and the bottom surface of drill body is less than the distance between outlet and the bottom surface of drill body; Under the gas effect of the gas outlet of inlet channel ejection, center sediment outflow passage is discharged by drill body bottom surface landwaste to top, adopt this structure to realize anti-circulation and discharge shaft bottom landwaste, " the well; can " form good anti-circulation sediment outflow effect in well 26 that is particularly useful for 26, possess certain prevention and the ability of processing leakage and drill bit lock of tool drilling simultaneously, for anti-recyclegas drilling well, institute's air demand is that the larger contrast of 1/5 ~ 1/40(borehole size of conventional direct circulation gas drilling is more obvious); For big size hole gas drilling, can reduce number of devices, reduce integrated cost.
Two, in the utility model, described inlet channel comprises keyway and bottom surface spray-hole, keyway is arranged on drill body top, the entrance of described bottom surface spray-hole is communicated with keyway, outlet is positioned on the bottom surface of drill body, and the entrance of described inner perforation is arranged in keyway, outlet is arranged in center sediment outflow passage, adopt this structure, by keyway, realized gas distribution, a part is flowed to center sediment outflow passage and is upwards flowed out by inner perforation, in the sediment outflow passage of center, form suction force upwards, another part is sprayed onto behind shaft bottom by bottom surface spray-hole, carry shaft bottom landwaste and enter into center sediment outflow passage, under suction force effect, realize anti-circulation.
Three, in the utility model, described drill body lower peripheral has interface channel around center sediment outflow channel setting, drill body top is run through in sediment outflow passage one end, center, the other end is connected on drill body bottom surface by interface channel, adopt this structure, center sediment outflow passage is not to penetrate on drill body bottom surface, make the hard alloy spherical-teeth that enclose region on of interface channel on drill body bottom surface participate in fractured rock, can be by the catalase of bulk, can avoid larger rock to enter center sediment outflow passage, prevent that center sediment outflow passage from stopping up simultaneously.
Four, in the utility model, described drill body is provided with diffusion groove on bottom surface, the outlet of bottom surface spray-hole is arranged in diffusion groove, and the landwaste entrance of interface channel is communicated with diffusion groove, by the effect of diffusion groove, landwaste after stirring can better be incorporated in the sediment outflow passage of center to sediment outflow better effects if by interface channel.
Five, in the utility model, the external cylindrical surface of described drill body bottom is provided with carbide alloy gauge teeth, during drill bit drilling well, has gauge effect; Drill body bottom face is provided with hard alloy spherical-teeth, broken landwaste better effects if.
Six, in the utility model, described drill body bottom has radially been evenly arranged anti-draw-in groove, and described anti-draw-in groove is three, can prevent to a certain extent and process drill bit lock of tool drilling.
Seven, in the utility model, described inner perforation is to be evenly distributed on six of drill body top, with keyway corresponding setting one by one, adopts six inner perforations, and swabbing action is better; Bottom surface spray-hole is to be evenly distributed on six of drill body bottom, with the corresponding setting one by one of diffusion groove, adopts six bottom surface spray-holes can improve the convergence effect of landwaste; Six inner perforations coordinate with six bottom surface spray-holes, reach best sediment outflow effect.
Accompanying drawing explanation
Fig. 1 is the utility model perspective view
Fig. 2 is the utility model bottom surface structure schematic diagram
Fig. 3 is the utility model cross-sectional view
Fig. 4 is the utility model top part section structural representation
In figure, be labeled as: 1, drill body; 2, gauge teeth; 3, hard alloy spherical-teeth; 4, bottom surface spray-hole; 5, inner perforation; 6, anti-draw-in groove; 7, center sediment outflow passage; 8, keyway; 9, interface channel; 10, diffusion groove.
The specific embodiment
A kind of anti-circulated air hammer bit, comprise drill body 1, on drill body 1, be provided with inlet channel, inner perforation 5 and center sediment outflow passage 7, the gas outlet of inlet channel is positioned on the bottom surface of drill body 1, the entrance of inner perforation 5 is communicated with inlet channel, outlet is communicated with center sediment outflow passage 7, and the distance between entrance and the bottom surface of drill body 1 is less than the distance between outlet and the bottom surface of drill body 1; Under the gas effect of the gas outlet of inlet channel ejection, center sediment outflow passage 7 is discharged by drill body 1 bottom surface landwaste to top.
In the utility model, described inlet channel comprises keyway 8 and bottom surface spray-hole 4, and keyway 8 is arranged on drill body 1 top, and the entrance of described bottom surface spray-hole 4 is communicated with keyway 8, and outlet is positioned on the bottom surface of drill body 1.
In the utility model, the entrance of described inner perforation 5 is arranged in keyway 8, and outlet is arranged in center sediment outflow passage 7.
In the utility model, described drill body 1 lower peripheral is provided with interface channel 9 around center sediment outflow passage 7, and drill body 1 top is run through in sediment outflow passage 7 one end, center, and the other end is connected on drill body 1 bottom surface by interface channel 9.
In the utility model, described drill body is provided with diffusion groove 10 on 1 bottom surface, and the outlet of bottom surface spray-hole 4 is arranged in diffusion groove 10, and the landwaste entrance of interface channel 9 is communicated with diffusion groove 10.
In the utility model, the external cylindrical surface of described drill body 1 bottom is provided with carbide alloy gauge teeth 2, and drill body 1 bottom face is provided with hard alloy spherical-teeth 3.
In the utility model, described drill body 1 bottom has radially been evenly arranged anti-draw-in groove 6, and described anti-draw-in groove 6 is three.
In the utility model, described inner perforation 5 is for being evenly distributed on six of drill body 1 top, with keyway 8 corresponding setting one by one; Bottom surface spray-hole 4 is for being evenly distributed on six of drill body 1 bottom, with diffusion groove 10 corresponding setting one by one.
Operating principle of the present utility model is: during use, the air entering is shunted by keyway, a part is flowed to center sediment outflow passage and is upwards flowed out by inner perforation, in the sediment outflow passage of center, form suction force upwards, another part is sprayed onto behind shaft bottom by bottom surface spray-hole, stir shaft bottom landwaste, under suction force effect, carry shaft bottom landwaste and enter into center sediment outflow passage, realize anti-circulation.
Embodiment 2
The utility model comprises drill body 1, gauge teeth 2 and hard alloy spherical-teeth 3, entire outer diameter Φ 600-700mm.In drill body 1, be provided with 4 six of bottom surface spray-holes, 5 six of inner perforations, and be radially evenly arranged three anti-draw-in grooves 6.On drill body 1 external cylindrical surface, inlay gauge teeth 2, diameter of phi 10-15mm.The bottom face carbide inserts ball tooth 3 of drill body 1, diameter of phi 18-20mm.
Claims (8)
1. an anti-circulated air hammer bit, comprise drill body (1), it is characterized in that: on drill body (1), be provided with inlet channel, inner perforation (5) and center sediment outflow passage (7), the gas outlet of inlet channel is positioned on the bottom surface of drill body, the entrance of inner perforation is communicated with inlet channel, outlet is communicated with center sediment outflow passage (7), and the distance between entrance and the bottom surface of drill body (1) is less than the distance between outlet and the bottom surface of drill body (1); Under the gas effect of the gas outlet of inlet channel ejection, center sediment outflow passage (7) is discharged by drill body (1) bottom surface landwaste to top.
2. anti-circulated air hammer bit according to claim 1, it is characterized in that: described inlet channel comprises keyway (8) and bottom surface spray-hole (4), keyway (8) is arranged on drill body (1) top, the entrance of described bottom surface spray-hole (4) is communicated with keyway (8), and outlet is positioned on the bottom surface of drill body (1).
3. anti-circulated air hammer bit according to claim 2, is characterized in that: the entrance of described inner perforation (5) is arranged in keyway (8), and outlet is arranged in center sediment outflow passage (7).
4. according to the anti-circulated air hammer bit described in claim 1,2 or 3, it is characterized in that: described drill body (1) lower peripheral is provided with interface channel (9) around center sediment outflow passage (7), drill body (1) top is run through in center sediment outflow passage (7) one end, and the other end is connected on drill body (1) bottom surface by interface channel (9).
5. anti-circulated air hammer bit according to claim 4, it is characterized in that: described drill body (1) is provided with diffusion groove (10) on bottom surface, the outlet of bottom surface spray-hole (4) is arranged in diffusion groove (10), and the landwaste entrance of interface channel (9) is communicated with diffusion groove (10).
6. according to the anti-circulated air hammer bit described in claim 1,2,3 or 5, it is characterized in that: the external cylindrical surface of described drill body (1) bottom is provided with carbide alloy gauge teeth (2), drill body (1) bottom face is provided with hard alloy spherical-teeth (3).
7. anti-circulated air hammer bit according to claim 6, is characterized in that: described drill body (1) bottom has radially been evenly arranged anti-draw-in groove (6), and described anti-draw-in groove (6) is three.
8. according to the anti-circulated air hammer bit described in claim 2 or 3, it is characterized in that: described inner perforation (5) is for being evenly distributed on six of drill body (1) top, with keyway (8) corresponding setting one by one; Bottom surface spray-hole (4) is for being evenly distributed on six of drill body (1) bottom, with diffusion groove (10) corresponding setting one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556728.3U CN203499565U (en) | 2013-09-09 | 2013-09-09 | Reverse circulation air hammer drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556728.3U CN203499565U (en) | 2013-09-09 | 2013-09-09 | Reverse circulation air hammer drill bit |
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| Publication Number | Publication Date |
|---|---|
| CN203499565U true CN203499565U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320556728.3U Expired - Lifetime CN203499565U (en) | 2013-09-09 | 2013-09-09 | Reverse circulation air hammer drill bit |
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| Country | Link |
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| CN (1) | CN203499565U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089504A (en) * | 2015-09-16 | 2015-11-25 | 中国石油集团川庆钻探工程有限公司 | Reverse circulation air hammer drill bit with anti-falling function |
| CN105113978A (en) * | 2015-09-16 | 2015-12-02 | 中国石油集团川庆钻探工程有限公司 | Single large-diameter reverse circulation air hammer capable of being used for large-size well drilling |
-
2013
- 2013-09-09 CN CN201320556728.3U patent/CN203499565U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089504A (en) * | 2015-09-16 | 2015-11-25 | 中国石油集团川庆钻探工程有限公司 | Reverse circulation air hammer drill bit with anti-falling function |
| CN105113978A (en) * | 2015-09-16 | 2015-12-02 | 中国石油集团川庆钻探工程有限公司 | Single large-diameter reverse circulation air hammer capable of being used for large-size well drilling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200909 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Co-patentee after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: The 1 section of No. 3 company Chuanqing Drilling Technology Information Office Chenghua District Green Road 610051 Chengdu City, Sichuan Province Patentee before: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |
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| CX01 | Expiry of patent term |