CN102587840B - Hard formation casing windowing drill bit - Google Patents
Hard formation casing windowing drill bit Download PDFInfo
- Publication number
- CN102587840B CN102587840B CN201210045415.1A CN201210045415A CN102587840B CN 102587840 B CN102587840 B CN 102587840B CN 201210045415 A CN201210045415 A CN 201210045415A CN 102587840 B CN102587840 B CN 102587840B
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- CN
- China
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- abrading block
- drill bit
- welding
- bit matrix
- welded
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- Expired - Fee Related
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Abstract
The invention discloses a hard formation casing windowing drill bit which is provided with a drill bit base body (1), wherein the drill bit base body (1) comprises a joint (11), a gauge surface (12), a conical surface (13) and a bottom end surface (14), and cutting abrasive blocks with different structural shapes are welded at different parts of the drill bit base body (1) in an embedding mode. Wherein the guide abrasive block (21) is welded on the bottom end surface (14) in a welding mode, the drilling abrasive block (22) is welded on the conical surface (13) in a welding mode, and the gauge protection abrasive block (23) is welded on the gauge protection surface (12) in a welding mode. The invention realizes the integration of two drilling processes of milling a metal sleeve and grinding a hard stratum by the special high-strength and high-wear-resistance superhard material cutting abrasive blocks which are embedded and welded at different parts of a drill bit substrate, completes the casing windowing operation of the multilateral well at one time, has the characteristics of high efficiency, long service life, low cost and high success rate, and solves the problems of low success rate, complex construction process and low construction efficiency of the previous casing windowing of the hard stratum.
Description
Technical field
The invention belongs to oilfield drilling field of operation downhole tool class, particularly a kind of hard stratum casing windowing drill bit.
Background technology
In branch well drilling completion practice, being holed by sleeve pipe uplifting window, is the method solving branch well hole and main borehole connectivity problem.At present in soft formation casing sidetracking, carbide alloy drill bit of windowing is used widely because it is efficient, the life-span is long and success rate is high.But in hard stratum casing windowing, conventional carbide alloy drill bit of windowing once cannot complete casing sidetracking and hard formation creeps into, often need several even more than ten drill bits of only windowing just can reach object of windowing, sometimes also may cause windows unsuccessfully, there is the shortcoming that efficiency is low, the life-span is short, cost is high and success rate is low.
Summary of the invention
A kind of cutting for metal sleeve is the object of the present invention is to provide to window and the grinding of hard formation creeps into operation in the efficient hard stratum casing windowing drill bit of one.
The present invention specifically discloses a kind of hard stratum casing windowing drill bit, has bit matrix, and bit matrix comprises joint, gage surface, taper surface and bottom face, has the cutting abrading block of different structure shape at the different parts welding-on of bit matrix (1).
Wherein, guiding abrading block welding-on is in the bottom face of bit matrix, and boring abrading block welding-on is in the taper surface of bit matrix, and gauge abrading block welding-on is in the gage surface of bit matrix.
Further, taper surface and bottom face are distributed with hydrophthalmia, hydrophthalmia is distributed between the good adjacent abrading block of welding-on.
Further, mud runner is formed between adjacent abrading block.
Further, the superhard material of each abrading block employing high strength, high-wearing feature is made.
Further, guiding abrading block, boring abrading block and gauge abrading block adopt corresponding superhard material and alloy powder to be formed by hot pressed sintering according to drill bit different parts job requirement of windowing, each abrading block in protective atmosphere environment welding-on on bit matrix.
Further, be connected with down-hole equipment by joint.
The present invention cuts abrading block by the superhard material of special high strength, high-wearing feature, welding-on is in the different parts of bit matrix, realize milling metal sleeve and grinding hard formation two kinds of drilling technologies in one, disposablely complete the operation of Multilateral Wells casing sidetracking, have the advantages that high efficiency, long-life, low cost and success rate are high, solve the difficult problem that hard stratum casing windowing success rate is low, complicated construction technique, efficiency of construction are low in the past.
Accompanying drawing explanation
Fig. 1 hard stratum casing windowing drill bit structural representation of the present invention;
Fig. 2 hard stratum casing windowing drill bit matrix of the present invention schematic diagram;
Fig. 3 hard stratum casing windowing drill bit bottom face of the present invention schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
As shown in Figure 1, hard stratum casing windowing drill bit of the present invention by special, different structure shape, high strength, high-wearing feature superhard material, as Diamond Cutting abrading block welding-on is formed in the different parts of bit matrix 1.As shown in Figure 2, bit matrix 1 is made up of joint 11, gage surface 12, taper surface 13, bottom face 14 and hydrophthalmia 15, and wherein hydrophthalmia 15 is distributed on taper surface 13 and bottom face 14.Composition graphs 1 again, guiding abrading block 21 welding-on is in the bottom face 14 of bit matrix 1, and boring abrading block 22 welding-on is in the taper surface 13 of bit matrix 1, and gauge abrading block 23 welding-on is in the gage surface 12 of bit matrix 1.Guiding abrading block 21, boring abrading block 22 and gauge abrading block 23 adopt corresponding superhard material and alloy powder to be formed by hot pressed sintering according to the job requirement of casing sidetracking drill bit different parts, each abrading block in protective atmosphere environment welding-on on bit matrix.
Hydrophthalmia 15 is distributed between abrading block, forms mud runner 3 after abrading block welding-on is good between adjacent abrading block.Hard stratum casing windowing drill bit of the present invention is connected with down-hole equipment by joint 11.
In drilling process, the boring abrading block 22 bottom face 14 led on abrading block 21 and taper surface 13 plays milling metal sleeve and grinding hard formation, gauge abrading block 23 on gage surface 12 plays a part to keep borehole diameter size, utilize the runner 3 formed between hydrophthalmia 15 and each welding-on abrading block as the fluid course of mud, play cooling drill bit and chip removal effect.The taper surface 13 of bit matrix is cone, plays guiding and keeps drilling direction effect.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also real is protection scope of the present invention.
Claims (4)
1. a hard stratum casing windowing drill bit, there is bit matrix (1), bit matrix (1) comprises joint (11), gage surface (12), taper surface (13) and bottom face (14), it is characterized in that: the cutting abrading block having different structure shape at the different parts welding-on of bit matrix (1), wherein lead abrading block (21) welding-on in the bottom face (14) of bit matrix (1), boring abrading block (22) welding-on is in the taper surface (13) of bit matrix (1), gauge abrading block (23) welding-on is in the gage surface (12) of bit matrix (1), guiding abrading block (21), boring abrading block (22) and gauge abrading block (23) set gradually, abrading block gives prominence to bit matrix (1) certain altitude, thus make self-assembling formation mud runner between axially two adjacent abrading blocks, in the part (13) and bottom face (14) of bottom face, hydrophthalmia (15) is distributed with at taper surface, hydrophthalmia (15) is distributed between the good adjacent abrading block of welding-on.
2. hard stratum casing windowing drill bit according to claim 1, is characterized in that: each abrading block adopts high strength, the superhard material of high-wearing feature is made.
3. hard stratum casing windowing drill bit according to claim 1 and 2; it is characterized in that: guiding abrading block (21), boring abrading block (22) and gauge abrading block (23) adopt corresponding superhard material and alloy powder to be formed by hot pressed sintering according to the job requirement of casing sidetracking drill bit different parts, each abrading block in protective atmosphere environment welding-on on bit matrix (1).
4. hard stratum casing windowing drill bit according to claim 1 and 2, is characterized in that: be connected with down-hole equipment by joint (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210045415.1A CN102587840B (en) | 2012-02-27 | 2012-02-27 | Hard formation casing windowing drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210045415.1A CN102587840B (en) | 2012-02-27 | 2012-02-27 | Hard formation casing windowing drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102587840A CN102587840A (en) | 2012-07-18 |
| CN102587840B true CN102587840B (en) | 2015-02-11 |
Family
ID=46477012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210045415.1A Expired - Fee Related CN102587840B (en) | 2012-02-27 | 2012-02-27 | Hard formation casing windowing drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102587840B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852462B (en) * | 2012-08-24 | 2015-04-29 | 北京探矿工程研究所 | Composite inserted tooth blade type diamond comprehensive drill bit |
| US10428584B2 (en) * | 2016-07-13 | 2019-10-01 | Varel International Ind., L.P. | Bit for drilling with casing or liner string and manufacture thereof |
| CN113202438B (en) * | 2021-05-24 | 2022-11-25 | 北京探矿工程研究所 | Composite cutting windowing milling cone |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2381415A (en) * | 1943-11-19 | 1945-08-07 | Jr Edward B Williams | Drill bit |
| DE3039633C2 (en) * | 1980-10-21 | 1983-08-18 | Christensen, Inc., 84115 Salt Lake City, Utah | Rotary drill bits, in particular for deep drilling |
| US6394198B1 (en) * | 2000-06-26 | 2002-05-28 | David R. Hall | Frictional vibration damper for downhole tools |
| CN201330561Y (en) * | 2009-01-22 | 2009-10-21 | 中国石油集团川庆钻探工程有限公司钻采工艺技术研究院 | Coring bit with back reaming function |
| US8887836B2 (en) * | 2009-04-15 | 2014-11-18 | Baker Hughes Incorporated | Drilling systems for cleaning wellbores, bits for wellbore cleaning, methods of forming such bits, and methods of cleaning wellbores using such bits |
-
2012
- 2012-02-27 CN CN201210045415.1A patent/CN102587840B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102587840A (en) | 2012-07-18 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cai Jiapin Inventor after: Zhang Hanle Inventor after: Jia Meiling Inventor after: Shang Xianfei Inventor after: Zhang Jianyuan Inventor after: Ruan Hailong Inventor after: Ouyang Zhiyong Inventor after: Li Chun Inventor after: Deng Xu Inventor after: Shen Lina Inventor before: Cai Jiapin Inventor before: Zhang Hanle Inventor before: Jia Meiling Inventor before: Shang Xianfei Inventor before: Zhang Jianyuan Inventor before: Ruan Hailong Inventor before: Ouyang Zhiyong Inventor before: Li Chun Inventor before: Deng Xu Inventor before: Shen Lina |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20210227 |