CN109162648B - Drill bit capable of being released when being blocked - Google Patents
Drill bit capable of being released when being blocked Download PDFInfo
- Publication number
- CN109162648B CN109162648B CN201811063956.0A CN201811063956A CN109162648B CN 109162648 B CN109162648 B CN 109162648B CN 201811063956 A CN201811063956 A CN 201811063956A CN 109162648 B CN109162648 B CN 109162648B
- Authority
- CN
- China
- Prior art keywords
- drill bit
- bit body
- torque transmission
- outer barrel
- lock nut
- 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.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 230000003628 erosive effect Effects 0.000 claims description 20
- 230000002265 prevention Effects 0.000 claims description 17
- 238000009933 burial Methods 0.000 claims 4
- 238000005553 drilling Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a disposable drill bit capable of being buried in a clamping way, which comprises a drill bit body and an outer barrel which are vertically arranged, wherein the outer barrel is sleeved on the drill bit body, a lock nut is arranged between the top of the drill bit body and the top of the outer barrel, a plurality of torque transmission grooves are formed in the bottom surface of the outer barrel, a plurality of torque transmission blocks are arranged in the middle of the drill bit body and are in one-to-one corresponding fit connection with the torque transmission grooves, an external thread A is arranged at the top of the drill bit body, and the lock nut is in threaded connection with the external thread A and compresses the outer barrel on the drill bit body. The invention can ensure a high-value rotary steering drilling system by discarding the low-value drill bit under the extreme condition that the drilling string can not be taken out, avoid overlarge economic loss and improve the fishing success rate.
Description
Technical Field
The invention relates to the technical field of drilling tools in the petroleum and gas industry, in particular to a drill bit capable of being released when being buried in a clamping way.
Background
In the oil and gas industry, horizontal wells and large-displacement wells have obvious advantages in the development and construction of oil and gas wells, and multi-branch well technologies are derived from the horizontal wells and the large-displacement wells. In the process of developing shale gas, almost all the shale gas adopts a horizontal well mode, the length of a horizontal well section is longer and longer, once the horizontal well section collapses, a horizontal section drill string is buried, an expensive rotary guiding drilling system is buried in engineering practice, accidents such as processing cannot be conducted, and huge economic loss is caused.
In order to solve the problems, the current domestic and foreign methods are to strengthen management and standardization operation in the drilling process, and design and select some advanced salvaging means and the like. However, due to the complexity of the downhole situation, there are not few examples of horizontal leg strings that could still be stuck and not removed for various possible reasons. At present, various means and methods such as jarring are adopted for fishing the buried pipe column at home and abroad, but the case that part of the buried pipe column cannot be taken out still occurs in engineering.
Disclosure of Invention
The invention provides the drill bit capable of being released when being blocked and buried, which can ensure a high-value rotary steering drilling system by discarding the low-value drill bit under the extreme condition that a drilling string cannot be taken out, avoid overlarge economic loss and improve the fishing success rate.
The technical scheme for solving the technical problems is as follows: the utility model provides a meet card and bury can release drill bit, includes drill bit body and urceolus of vertical setting, the urceolus cover is established on the drill bit body, the top of drill bit body with be equipped with lock nut between the top of urceolus, a plurality of transmission torsion grooves have been seted up to the bottom surface of urceolus, the middle part of drill bit body is equipped with a plurality of transmission torsion pieces, transmission torsion piece with transmission torsion groove one-to-one is connected, the top of drill bit body is equipped with external screw thread A, lock nut with external screw thread A threaded connection and with the urceolus compresses tightly on the drill bit body.
The beneficial effects of the invention are as follows: after the pipe column is clamped and buried, high-value products in the underground pipe column, such as a rotary steerable drilling system, can be taken out, and under the extreme condition that the drilling pipe column cannot be taken out, the high-value rotary steerable drilling system is ensured by discarding a plurality of low-value drill bits, so that the economic loss is avoided to be overlarge, and the fishing success rate is improved.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the drill bit body includes cylindric base, cylindric supporting part and cylindric fixed part that from the bottom up communicates in proper order, the diameter of base is greater than the diameter of supporting part, the diameter of supporting part is greater than the diameter of fixed part, a plurality of pass turn round the piece along the circumference of supporting part evenly arrange and with the tip fixed connection of base, annular groove has been seted up at the middle part of fixed part, external screw thread A is seted up the top of fixed part and is located annular groove's top, the urceolus cover is established the supporting part with outside the fixed part.
The drill bit has the beneficial effects that the structure is simple, the cross section area of the annular groove is the smallest in comparison with the cross section area of the drill bit body, and the drill bit can be released by breaking the part under the action of a certain pulling force.
Further, be equipped with the erosion prevention cap in the top of fixed part, the erosion prevention cap with fixed part interference fit is connected, be fixed with outer hexagonal on the top surface of erosion prevention cap, be fixed with interior hexagonal hole on the top surface of lock nut, outer hexagonal cooperation is connected in interior hexagonal hole.
The anti-erosion cap and the drill bit body are in interference fit, so that the anti-erosion cap can be prevented from loosening in the vibration process.
Further, the inner wall of the upper part of the erosion prevention cap is covered with an erosion prevention layer.
The adoption of the further scheme has the beneficial effect of effectively preventing failure under the action of slurry flushing.
Further, the outer cylinder comprises a cylindrical connecting portion and a joint portion with external threads B, the connecting portion is sleeved outside the supporting portion, the joint portion is sleeved outside the fixing portion, the torque transmission groove is formed in the bottom surface of the connecting portion, and the lock nuts are arranged in the joint portion.
The beneficial effect of adopting above-mentioned further scheme is simple structure, easily production, easy to assemble.
Further, a spanner groove is formed in the middle of the connecting portion.
The beneficial effect of adopting above-mentioned further scheme is through spanner groove and open-ended spanner cooperation work, realizes the function of buckling.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the bit body;
FIG. 3 is a schematic structural view of the outer cylinder;
FIG. 4 is a schematic view of the construction of the cage nut;
fig. 5 is a schematic structural view of the erosion prevention cap.
In the drawings, the list of components represented by the various numbers is as follows:
1. the drill bit comprises an outer barrel, 2, a drill bit body, 3, a lock nut, 4, an anti-erosion cap, 5, a base, 6, a supporting part, 7, a fixing part, 8, a connecting part, 9, a joint part, 10, a torque transmission block, 11, external threads A,12, an annular groove, 13, a torque transmission groove, 14, a wrench groove, 15, an inner hexagonal hole, 16 and an outer hexagonal.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1-5, a drill bit capable of being released when being blocked and buried comprises a drill bit body 2 and an outer barrel 1 which are vertically arranged, wherein the outer barrel 1 is sleeved on the drill bit body 2, a lock nut 3 is arranged between the top of the drill bit body 2 and the top of the outer barrel 1, a plurality of torque transmission grooves 13 are formed in the bottom surface of the outer barrel 1, a plurality of torque transmission blocks 10 are arranged in the middle of the drill bit body 2, the torque transmission blocks 10 are in one-to-one corresponding fit connection with the torque transmission grooves 13, an external thread A11 is arranged at the top of the drill bit body 2, and the lock nut 3 is in threaded connection with the external thread A11 and compresses the outer barrel 1 on the drill bit body 2.
Specifically, during the feeding process of the drill string, the torque transmission blocks 10 and the torque transmission grooves 13 are inserted in the torque transmission grooves 13 in a one-to-one correspondence manner, and the torque of the outer barrel 1 can be transmitted to the drill bit body 2 through the connection mode due to the fact that the torque transmission blocks 10 are matched with the torque transmission grooves 13; the locking screw thread is connected with the locking nut 3 to ensure that the outer barrel 1 and the drill bit body 2 have certain pretightening in the axial direction so as to prevent the drill bit from loosening due to axial vibration in the working process.
Preferably, the torque transmission block 10 is substantially rectangular, and the plurality of torque transmission blocks 10 are uniformly arranged along the circumferential direction of the drill bit body 2 to form a concave-convex structure, and the torque transmission grooves 13 and the torque transmission blocks 10 are correspondingly meshed together.
The drill bit body 2 includes cylindric base 5, cylindric supporting part 6 and cylindric fixed part 7 that communicate in proper order from the bottom up, and the diameter of base 5 is greater than the diameter of supporting part 6, and the diameter of supporting part 6 is greater than the diameter of fixed part 7, and a plurality of transmission torsion pieces 10 evenly arrange along the circumference of supporting part 6 and with the tip fixed connection of base 5, annular groove 12 has been seted up at the middle part of fixed part 7, and external screw thread A11 is seted up at the top of fixed part 7 and is located annular groove 12's top, and urceolus 1 cover is established outside supporting part 6 and fixed part 7.
Specifically, the cross-sectional area of the annular groove 12 on the drill bit body 2 is relatively minimum, and under the action of a certain tensile force, the fracture of the position can realize the release of the drill bit.
The outer cylinder 1 comprises a cylindrical connecting part 8 and a joint part 9 with external threads B, the connecting part 8 is sleeved outside the supporting part 6, the joint part 9 is sleeved outside the fixing part 7, a torque transmission groove 13 is formed in the bottom surface of the connecting part 8, and the lock nut 3 is arranged in the joint part 9. A wrench groove 14 is formed in the middle of the connecting portion 8.
Specifically, the connection portion 8 and the joint portion 9 are integrally formed. The base 5, the supporting portion 6 and the fixing portion 7 are integrally formed. Preferably, the base 5, the supporting part 6 and the fixing part 7 are all cylindrical, the peripheral wall of the base is smooth, the wrench is easy to slide off, and the wrench can be clamped in the wrench groove 14 by opening the wrench groove 14, so that the wrench is convenient to use.
An erosion prevention cap 4 is arranged in the top of the fixing part 7, the erosion prevention cap 4 is connected with the fixing part 7 in interference fit, an outer hexagonal 16 is fixed on the top surface of the erosion prevention cap 4, an inner hexagonal hole 15 is fixed on the top surface of the lock nut 3, and the outer hexagonal 16 is connected in the inner hexagonal hole 15 in a fit manner. The inner wall of the upper part of the erosion prevention cap 4 is covered with an erosion prevention layer.
Specifically, the erosion-resistant layer is made of erosion-resistant materials, so that the failure under the action of slurry erosion can be effectively prevented. The lower part of the erosion prevention cap 4 is in interference fit with the inner cavity of the fixed part 7, so that the erosion prevention cap is prevented from loosening in the drilling vibration process.
After the pipe column is clamped and buried, pulling force can be directly applied to the drill string, the drill string is tightly connected with the erosion prevention cap 4, the erosion prevention cap 4 is connected with the lock nut 3, the lock nut 3 is in threaded connection with the fixing portion 7, the pulling force is transmitted to the fixing portion 7, the annular groove 12 of the fixing portion 7 is smaller in cross section than other places, and the drill bit body 2 is broken by breaking the annular groove 12 after certain pulling force is applied, so that most of the drill bit body 2 is discarded, and devices on the upper portion of the drill bit such as a rotary drilling system are salvaged, so that economic loss is reduced.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (5)
1. The utility model provides a meet card buries can give up drill bit which characterized in that: the drill bit comprises a drill bit body (2) which is vertically arranged and an outer barrel (1) which is vertically arranged, wherein the outer barrel (1) is sleeved on the drill bit body (2), a lock nut (3) is arranged between the outer wall of the top of the drill bit body (2) and the inner wall of the top of the outer barrel (1), a plurality of torque transmission grooves (13) are formed in the bottom surface of the outer barrel (1), a plurality of torque transmission blocks (10) are arranged in the middle of the drill bit body (2), the torque transmission blocks (10) are in one-to-one matching connection with the torque transmission grooves (13), an external thread A (11) is arranged at the top of the drill bit body (2), and the lock nut (3) is in threaded connection with the external thread A (11) and compresses the outer barrel (1) on the drill bit body (2); the drill bit body (2) comprises a cylindrical base (5), a cylindrical supporting portion (6) and a cylindrical fixing portion (7) which are sequentially communicated from bottom to top, the diameter of the base (5) is larger than that of the supporting portion (6), the diameter of the supporting portion (6) is larger than that of the fixing portion (7), a plurality of torque transmission blocks (10) are uniformly arranged along the circumferential direction of the supporting portion (6) and fixedly connected with the end portion of the base (5), an annular groove (12) is formed in the middle of the fixing portion (7), an external thread A (11) is formed in the top of the fixing portion (7) and located above the annular groove (12), and the outer cylinder (1) is sleeved outside the supporting portion (6) and the fixing portion (7).
2. The burial releasable drill bit of claim 1, wherein: the anti-erosion cap (4) is arranged in the top of the fixing part (7), the anti-erosion cap (4) is connected with the fixing part (7) in an interference fit manner, an outer hexagonal (16) is fixed on the top surface of the anti-erosion cap (4), an inner hexagonal hole (15) is fixed on the top surface of the lock nut (3), and the outer hexagonal (16) is connected in the inner hexagonal hole (15) in a matched manner.
3. The burial releasable drill bit of claim 2, wherein: the inner wall of the upper part of the erosion prevention cap (4) is covered with an erosion prevention layer.
4. A burial releasable drill according to any one of claims 1-3, wherein: the outer cylinder (1) comprises a cylindrical connecting portion (8) and a joint portion (9) with an external thread B, the connecting portion (8) is sleeved outside the supporting portion (6), the joint portion (9) is sleeved outside the fixing portion (7), the torque transmission groove (13) is formed in the bottom surface of the connecting portion (8), and the lock nut (3) is arranged in the joint portion (9).
5. The burial releasable drill bit of claim 4, wherein: a spanner groove (14) is formed in the middle of the connecting portion (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811063956.0A CN109162648B (en) | 2018-09-12 | 2018-09-12 | Drill bit capable of being released when being blocked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811063956.0A CN109162648B (en) | 2018-09-12 | 2018-09-12 | Drill bit capable of being released when being blocked |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109162648A CN109162648A (en) | 2019-01-08 |
| CN109162648B true CN109162648B (en) | 2024-07-09 |
Family
ID=64894841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811063956.0A Active CN109162648B (en) | 2018-09-12 | 2018-09-12 | Drill bit capable of being released when being blocked |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109162648B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538128B (en) * | 2019-01-18 | 2024-04-02 | 沧州格锐特钻头有限公司 | Shockproof PDC drill bit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208845111U (en) * | 2018-09-12 | 2019-05-10 | 成都希能能源科技有限公司 | A kind of chance card buries the drill bit that can give up |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3330025A1 (en) * | 1982-08-30 | 1984-03-01 | Ingersoll-Rand Co., 07675 Woodcliff Lake, N.J. | TWO-PIECE DRILL |
| US4919221A (en) * | 1989-04-06 | 1990-04-24 | Numa Tool Company | Impact drill bit assembly and replaceable parts thereof |
| US20100263932A1 (en) * | 2009-04-16 | 2010-10-21 | Dale Richard Wolfer | Bit retainer assembly for a down-hole drill |
| CN203430420U (en) * | 2013-08-28 | 2014-02-12 | 杨明合 | Novel torque percussion drilling tool |
-
2018
- 2018-09-12 CN CN201811063956.0A patent/CN109162648B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208845111U (en) * | 2018-09-12 | 2019-05-10 | 成都希能能源科技有限公司 | A kind of chance card buries the drill bit that can give up |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109162648A (en) | 2019-01-08 |
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