CN203594365U - Near-bit torsional impactor - Google Patents
Near-bit torsional impactor Download PDFInfo
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- CN203594365U CN203594365U CN201320736377.4U CN201320736377U CN203594365U CN 203594365 U CN203594365 U CN 203594365U CN 201320736377 U CN201320736377 U CN 201320736377U CN 203594365 U CN203594365 U CN 203594365U
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- impactor
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- torsional
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Abstract
The utility model discloses a near-bit torsional impactor which comprises a drill collar pup joint, a flow divider, a torsional impactor body and an impact transmission pup joint. The impact transmission pup joint is connected with the lower portion of the drill collar pump joint, the flow divider and the torsional impactor body are arranged between the drill collar pup joint and the impact transmission pup joint, a lower port of the flow divider is communicated with an inlet of the torsional impactor body, and an outlet of the torsional impactor body is communicated with the impact transmission pup joint. The near-bit torsional impactor has the advantages that due to the high-frequency low-amplitude torsional impact with periodic stability, the phenomena of stick slip and intermittent pipe jamming of a PDC drill bit can be eliminated through impact torsion; furthermore, the near-bit torsional impactor is not provided with electronic components, is of a full hydraulic mechanical structure and is small in size, and thus interference to a while-drilling electric logging instrument can be avoided in the impact process. The near-bit torsional impactor ensures the stability and the equilibrium of torsion in a drill column in the drilling process, reduces the torsional oscillation of the drill column and is beneficial to the stable working of MWD, LWD and other while-drilling electric logging instruments. The near-bit torsional impactor is few in damageable part, stable in working, long in service life and beneficial to reducing drilling cost.
Description
Technical field
The utility model relates to the auxiliary rock instrument of a kind of oil, the use of gas drilling technology field, particularly relates to a kind of nearly drill bit reverse impactor.
Background technology
Deep or super deep formation formation hardness are large, and drillability level value is high, and rate of penetration is slow, drilling cost is high.PDC drill bit, in the time creeping into these stratum, can produce stick-slip effect, intermittent bit freezing phenomenon.The generation of this phenomenon is that when after catalase under PDC drill teeth, drill string intort impact energy discharges fast because PDC drill bit tooth in the time of broken rock gathers a certain amount of amount of torsional energy.This phenomenon produces drill string and reverses concussion, makes the rock break-off process of PDC drill bit become extremely unstable, causes PDC drill bit to destroy, and reduces bit life.
In order to solve the problem such as stick-slip effect, intermittent bit freezing of PDC drill bit, increase the stability of PDC drill bit work, extend the application life of drill bit, patent US6742609B2 has designed the turbo-driven reverse impactor of a kind of drilling fluid, patent 200910058083.9 has designed the torsional impact drilling tool that a kind of drilling fluid helicoid hydraulic motor drives, but these two kinds of drilling tool complex structures, easily worn part are many and press consumption larger, and be also restricted application life.
Summary of the invention
The technical problem that the utility model solves is, provide a kind of PDC drill bit in hard while breaking rock to hard formation or abrasive layer drill bit can not produce the nearly drill bit reverse impactor of stick-slip effect and intermittent bit freezing.
The technical scheme that the utility model adopts is: a kind of nearly drill bit reverse impactor, comprises drill collar short circuit, current divider, reverse impactor and impact transmission short circuit; The bottom of described drill collar short circuit is connected with impact transmission short circuit, between drill collar short circuit and impact transmission short circuit, current divider and reverse impactor is installed; Described current divider lower port communicates with reverse impactor entrance; Reverse impactor outlet communicates with transmission short circuit.
Described reverse impactor comprises, upper press cover, impactor shell, joint ring, fluid power impulse chamber, throttle nozzle and pressure release support ring; Described upper press cover be arranged on impactor shell above, joint ring sealing upper press cover and impactor shell, its inner fluid power impulse chamber that forms; Fluid power impulse chamber is provided with fluid operated hammer, commutator, center air deflector and throttle nozzle; Described commutator is between center air deflector and fluid operated hammer, and described throttle nozzle is arranged on air deflector exit, center; The inwall of described impactor shell is formed with axial symmetry punching groove, half slot and pressure hole; Described fluid operated hammer external surface is formed with axisymmetric hammer anvil, and inner surface has axisymmetric reversing key, has hammer anvil hole and commutation keyhole at hammer anvil and reversing key both sides; The hammer anvil of described fluid operated hammer external surface is positioned at the punching groove of impactor shell, and the reversing key of fluid operated hammer inner surface extend in the reversing groove of commutator; Commutator external surface has axial symmetry scallop and reversing groove, has axial symmetry transitional pore in scallop, and relief hole is arranged at commutator bottom; Center air deflector is made up of threaded hole and base, and its base is connected on pressure release support ring, and pressure release support ring is connected to and impacts transmission short circuit top.
Described pressure hole, reversing groove, commutation keyhole and half slot communicate successively and form pressure release runner; Described half slot communicates with reverse impactor outlet; Described threaded hole, hammer anvil hole, punching groove communicate successively to form and impact runner; Punching groove communicates with relief hole through hammer anvil hole, and relief hole communicates with reverse impactor outlet.
Between described reverse impactor, transmission short circuit, location snap ring is set.
Described drill collar short circuit upper end pin thread is connected with top drill collar box end by API standard thread.
Described transmission short circuit lower end is connected with drill bit pin end by API standard thread.
The beneficial effects of the utility model are: owing to producing periodically stable high frequency torsional pulse by a narrow margin, therefore, this impulsive torque can be eliminated stick-slip phenomenon and the intermittent bit freezing phenomenon of PDC drill bit, and the utility model does not have electronic unit, hydraulic machine structure completely, size is less, and its impact process can be to not producing interference with boring Electrical Measuring Instrument.Due to the use of this instrument, guarantee the stable and balance of drill string internal torque in drilling process, reduce drill string and reversed concussion, be conducive to MWD, LWD etc. with the steady operation that bores Electrical Measuring Instrument.The utility model easily worn part is few, working stability, and long service life, is conducive to reduce drilling cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the nearly drill bit reverse impactor of the utility model;
Fig. 2 is the A-A sectional view in Fig. 1;
Fig. 3 is the B-B sectional view in Fig. 1;
Fig. 4 is the C-C sectional view in Fig. 1;
Fig. 5 is the D-D sectional view in Fig. 1.
1. drill collar pipe nipple 2. current divider 3. screw thread platen 4. upper cover body
5. impactor shell 6. fluid operated hammer 7. commutator 8. throttle nozzles
9 pressure release support rings 10. impact transmission short circuit 11. snap ring 12. center air deflectors
13. joint ring 14. tap hole 15. high-pressure and overflowing passage 16. current by pass
17. threaded hole 18. keyhole 19. reversing key 20. half slots that commutate
21. reversing groove 22. pressure hole 23. scallop 24. transitional pores
25. hammer anvil 26. hammer anvil hole 27. punching groove 28. relief holes
29. moment of torsion teeth.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further:
As shown in Figure 1, the nearly drill bit reverse impactor of the utility model, comprise, drill collar short circuit 1, current divider 2, reverse impactor, impact transmission short circuit 10, drill collar short circuit 1 upper end pin thread is connected with top drill collar box end by API standard thread, and the lower end of drill collar short circuit 1 is connected with snap ring 11, impact transmission short circuit 10 gaps, between drill collar short circuit 1 and impact transmission short circuit 10, current divider 2, reverse impactor is installed, outside, current divider 2, reverse impactor are interior for drill collar short circuit 1.
The Multicarity structure that wherein reverse impactor is made up of jointly screw thread platen 3, upper cover body 4, impactor shell 5, fluid operated hammer 6, commutator 7, throttle nozzle 8, pressure release support ring 9 and joint ring 13.
As shown in Figures 2 and 3, current divider is a V-arrangement funnel-shaped part, and current divider lower port communicates with the entrance of reverse impactor, and connected mode, for being threaded, is distributed with 6 tap holes 14 in current divider upper end; Drilling fluid fluid is divided into inside and outside two strands by current divider, and the direction of flow high pressure runner 15 of outside flow in the reversing groove 21 in commutator 7 by pressure hole 22, commutation keyhole 19, uninterruptedly gives commutator feed flow, and internal flow is to center air deflector 12 feed flows.
The impactor shell 5 of reverse impactor communicates with impact transmission short circuit 10.Impacting transmission short circuit 10 lower ends is connected with drill bit pin end by API standard thread.Between reverse impactor, impact transmission short circuit 10, location snap ring 11 is set, for fixed shunt, reverse impactor and impact transmission short circuit 10 positions at drill collar short circuit 1.
As shown in Figure 3 and Figure 4, the upper cover body 4 of reverse impactor is on impactor shell 5, the two is the inner fluid power impulse chamber that forms after connecting, fluid power impulse chamber is provided with fluid operated hammer 6, commutator 7, center air deflector 12, throttle nozzle 8, between commutator 7 Tao center air deflectors 12 and fluid operated hammer 6, throttle nozzle 8 is arranged on center air deflector 12 exits, fluid operated hammer 6 is installed with impactor shell 5 gaps, between joint ring 13, commutator 7 and impactor shell 5, do cyclic movement, commutator 7 does cyclic movement at joint ring 13,12 of center air deflectors; The upper and lower axle of fluid operated hammer 6 is arranged on impactor shell 5.Impactor shell 5 inwalls have axial symmetry punching groove 27, half slot 20 and pressure hole 22; Fluid operated hammer 6 external surfaces have axisymmetric hammer anvil 25, and inner surface has axisymmetric reversing key 19, have hammer anvil hole 26 and commutation keyhole 18 at hammer anvil 25 and reversing key 19 both sides; The hammer anvil 25 of described fluid operated hammer 6 external surfaces is positioned at the punching groove 27 of impactor shell 5, and the reversing key 19 of fluid operated hammer 6 inner surfaces extend in the reversing groove 21 of commutator 7; Commutator 7 external surfaces have axial symmetry scallop 23 and reversing groove 21, have axial symmetry transitional pore 24 in scallop 23, and relief hole 28 is arranged at commutator 7 bottoms; Center air deflector 12 is made up of threaded hole 17 and base, and its base is connected on pressure release support ring 9, and pressure release support ring 9 is arranged on and impacts on transmission short circuit 10, is threaded; Pressure release passage is communicated and forms successively by pressure hole 22, reversing groove 21, commutation keyhole 18, half slot 20, and half slot 20 communicates with pressure release support ring 9 outlets of impactor lower end; Impact runner and communicated and form successively by threaded hole 17, hammer anvil hole 26, punching groove 27 and the current by pass 16 of center air deflector 12, punching groove 27 communicates with current by pass 16 through hammer anvil hole 26, and current by pass 16 communicates with pressure release support ring 9 outlets of impactor lower end.
As shown in Figure 5, the torsion tooth 29 impacting on transmission short circuit 10 engages with the torsion tooth on drill collar short circuit 1, transmission top moment of torsion, and all fluids converge and flow to drill bit at Fig. 5 centre bore.
In the utility model reverse impactor when work,, the drill collar of rotation drives drill collar short circuit 1 to rotate, and the moving moment of torsion tooth 29 that impacts transmission short circuit 10 of moment of torsion cingulum of drill collar short circuit 1 impacts transmission short circuit 10 and is connected with drill bit and drives bit; Fluid enters into current divider 2 from the inlet opening of drill collar short circuit 1, and shunting in air deflector 2, and core flow enters center current divider 12 by impactor shell 5, and all the other flow to from the tap hole 14 of current divider 2 space that current divider 2 and drill collar short circuit 1 form; By center air deflector, to impactor exit portion, internal flow can be divided into two parts: a part of fluid by the throttle nozzle 8 of center air deflector 12 out, directly arrive impactor outlet; The flow through transitional pore 24 of scallop 23 of commutator 7 of the threaded hole 17 of another part fluid in center air deflector 12 enters hammer anvil hole 26, finally enter into punching groove 27, and finally enter into relief hole 28 from punching groove 27 by hammer anvil hole 26, this part fluid and front two parts fluid converge in impactor outlet, all fluids enter into and impact transmission short circuit 10, then enter annular space space through bit nozzle; In impact runner, under the acting in conjunction of fluid and commutation runner fluid, the collaborative hammer anvil 25 of having realized of fluid operated hammer 6, commutator 7 and impactor shell repeatedly moves in punching groove 27, generation torsional pulse, and pass to drill bit by impacting transmission short circuit 10.
It is worthy of note, protection domain of the present utility model is not limited to above-mentioned instantiation mode, needs only those of ordinary skills without process creative work, and the embodiment that can associate all belongs to protection domain of the present utility model.
Claims (6)
1. a nearly drill bit reverse impactor, is characterized in that: comprise drill collar short circuit (1), current divider (2), reverse impactor and impact transmission short circuit (10); The bottom of described drill collar short circuit (1) is connected with impact transmission short circuit (10), between drill collar short circuit (1) and impact transmission short circuit (10), current divider (2) and reverse impactor is installed; Described current divider (2) lower port communicates with reverse impactor entrance; Reverse impactor outlet communicates with transmission short circuit (10).
2. nearly drill bit reverse impactor according to claim 1, is characterized in that: described reverse impactor comprises, upper press cover (4), impactor shell (5), joint ring (13), fluid power impulse chamber, throttle nozzle (8) and pressure release support ring (9); Described upper press cover (4) be arranged on impactor shell (5) above, joint ring (13) sealing upper press cover (4) and impactor shell (5), its inner formation fluid power impulse chamber; Fluid power impulse chamber is provided with fluid operated hammer (6), commutator (7), center air deflector (12) and throttle nozzle (8); Described commutator (7) is positioned between center air deflector (12) and fluid operated hammer (6), and described throttle nozzle (8) is arranged on center air deflector (12) exit; The inwall of described impactor shell (5) is formed with axial symmetry punching groove (27), half slot (20) and pressure hole (22); Described fluid operated hammer (6) external surface is formed with axisymmetric hammer anvil (25), and inner surface has axisymmetric reversing key (19), has hammer anvil hole (26) and commutation keyhole (18) at hammer anvil (25) and reversing key (19) both sides; The hammer anvil (25) of described fluid operated hammer (6) external surface is positioned at the punching groove (27) of impactor shell (5), and the reversing key (19) of fluid operated hammer (6) inner surface extend in the reversing groove (21) of commutator (7); Commutator (7) external surface has axial symmetry scallop (23) and reversing groove (21), has axial symmetry transitional pore (24) in scallop (23), and relief hole (28) is arranged at commutator (7) bottom; Center air deflector (12) is made up of threaded hole (17) and base, and it is upper that its base is connected to pressure release support ring (9), and pressure release support ring (9) is connected to and impacts transmission short circuit (10) top.
3. nearly drill bit reverse impactor according to claim 2, is characterized in that: described pressure hole (22), reversing groove (21), commutation keyhole (18) and half slot (20) communicate successively and form pressure release runner; Described half slot (20) communicates with reverse impactor outlet; Described threaded hole (17), hammer anvil hole (26), punching groove (27) communicate successively to form and impact runner; Punching groove (27) communicates with relief hole (28) through hammer anvil hole (26), and relief hole (28) communicates with reverse impactor outlet.
4. nearly drill bit reverse impactor according to claim 1, is characterized in that: location snap ring (11) is set between described reverse impactor, transmission short circuit (10).
5. nearly drill bit reverse impactor according to claim 1, is characterized in that: described drill collar short circuit (1) upper end pin thread is connected with top drill collar box end by API standard thread.
6. nearly drill bit reverse impactor according to claim 1, is characterized in that: described transmission short circuit (10) lower end is connected with drill bit pin end by API standard thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320736377.4U CN203594365U (en) | 2013-11-20 | 2013-11-20 | Near-bit torsional impactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320736377.4U CN203594365U (en) | 2013-11-20 | 2013-11-20 | Near-bit torsional impactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203594365U true CN203594365U (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320736377.4U Expired - Fee Related CN203594365U (en) | 2013-11-20 | 2013-11-20 | Near-bit torsional impactor |
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| Country | Link |
|---|---|
| CN (1) | CN203594365U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628819A (en) * | 2013-11-20 | 2014-03-12 | 中国石油集团渤海钻探工程有限公司 | Near-bit torsion impactor |
| CN104265160A (en) * | 2014-07-28 | 2015-01-07 | 东北石油大学 | Hydraulic oscillation axial impactor |
| CN104314472A (en) * | 2014-10-20 | 2015-01-28 | 江苏航天鸿鹏数控机械有限公司 | Percussion and vibration device of screw drill |
| CN110905419A (en) * | 2019-12-23 | 2020-03-24 | 中国石油大学(华东) | Petroleum drilling tool |
| WO2021232709A1 (en) * | 2020-05-22 | 2021-11-25 | 东北石油大学 | Composite shock absorber for pdc drill bit |
-
2013
- 2013-11-20 CN CN201320736377.4U patent/CN203594365U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628819A (en) * | 2013-11-20 | 2014-03-12 | 中国石油集团渤海钻探工程有限公司 | Near-bit torsion impactor |
| CN103628819B (en) * | 2013-11-20 | 2016-04-20 | 中国石油集团渤海钻探工程有限公司 | A kind of nearly drill bit reverse impactor |
| CN104265160A (en) * | 2014-07-28 | 2015-01-07 | 东北石油大学 | Hydraulic oscillation axial impactor |
| CN104314472A (en) * | 2014-10-20 | 2015-01-28 | 江苏航天鸿鹏数控机械有限公司 | Percussion and vibration device of screw drill |
| CN110905419A (en) * | 2019-12-23 | 2020-03-24 | 中国石油大学(华东) | Petroleum drilling tool |
| CN110905419B (en) * | 2019-12-23 | 2021-06-11 | 中国石油大学(华东) | Petroleum drilling tool |
| WO2021232709A1 (en) * | 2020-05-22 | 2021-11-25 | 东北石油大学 | Composite shock absorber for pdc drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20191120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |