CN103628815B - A kind of nearly drill bit reverses, Oscillatory Coupling impactor - Google Patents
A kind of nearly drill bit reverses, Oscillatory Coupling impactor Download PDFInfo
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- CN103628815B CN103628815B CN201310587333.4A CN201310587333A CN103628815B CN 103628815 B CN103628815 B CN 103628815B CN 201310587333 A CN201310587333 A CN 201310587333A CN 103628815 B CN103628815 B CN 103628815B
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- impactor
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Abstract
The open a kind of nearly drill bit of the present invention reverses, Oscillatory Coupling impactor, comprises, drill collar short circuit, current divider, reverse impactor, impulse hunting chamber and impact transmission short circuit; The bottom of drill collar short circuit is connected with impact transmission short circuit, and drill collar short circuit inner circumferential is provided with current divider, reverse impactor and impulse hunting chamber, and current divider lower port communicates with reverse impactor entrance; Reverse impactor outlet communicates with the entrance in impulse hunting chamber, and the outlet of impulse hunting chamber communicates with impact transmission short circuit; Reverse impactor be formed with pressure release runner and impact runner.Beneficial effect: owing to can produce torsion, the Oscillatory Coupling impact shock of periodically stable frequency low-amplitude, this impulsive torque effectively eliminates the stick-slip of PDC drill bit and intermittent bit freezing phenomenon.This impactor does not have electronic unit, complete hydraulic machine structure, and size is less, and its impact process can not produce interference to brill Electrical Measuring Instrument.Easily worn part of the present invention is few, working stability, long service life, is conducive to reducing drilling cost.
Description
Technical field
The present invention relates to the well dynamic instrument of a kind of oil, the use of gas drilling engineering field, particularly relate to a kind of nearly drill bit torsion, Oscillatory Coupling impactor.
Background technology
Greatly, rock-drillability index value is high, and rate of penetration is slow, drilling cost is high for deep or ultra-deep portion formation rock hardness.In the drilling well recovery process of oil, natural gas, well dynamic auxiliary rock instrument has become the useful supplement of deep formation efficient rock-breaking technology.Field practice and in-house laboratory investigation show, drill bit are applied to the impact force of some cycles, will improve the efficiency of breaking rock of drill bit, and therefore percussion drilling tool is expected to the important technical becoming deep-well speed-raising.
When using PDC drill bit to creep into above-mentioned stratum, stick-slip effect, intermittent bit freezing phenomenon can be produced.This stick-slip effect, intermittent bit freezing phenomenon make the irregular release of elasticity of torsion energy of accumulation in drill string, cause the rock break-off process of PDC drill bit to become extremely unstable, accelerate the improper damage of PDC drill bit, reduce PDC drilling life of bit.
Conventional hydraulic impacter belongs to axial impact, can not increase the broken rock moment of torsion of PDC drill bit, as patent CN200710056325.1 describes a kind of jet flow type shocker.
In order to improve deep well mechanical drilling speed, solve the problem such as stick-slip effect, intermittent bit freezing of PDC drill bit, promote PDC drill bit steady operation, extend the application life of drill bit, patent US6742609B2 devises the reverse impactor that a kind of mud turbine drives, but this drilling tool complex structure, easily worn part are many and pressure consumption is comparatively large, and application life is also restricted.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of can eliminate PDC drill bit in firmly break rock to hard formation or abrasive layer time occur stick-slip, the nearly drill bit torsion of intermittent bit freezing, Oscillatory Coupling impactor.
The technical solution adopted in the present invention is: a kind of nearly drill bit reverses, Oscillatory Coupling impactor, comprises, drill collar short circuit, current divider, reverse impactor, impulse hunting chamber and impact transmission short circuit; The bottom of described drill collar short circuit is connected with impact transmission short circuit, and described drill collar short circuit inner circumferential is provided with current divider, reverse impactor and impulse hunting chamber, and described current divider lower port communicates with reverse impactor entrance; Reverse impactor outlet communicates with the entrance in impulse hunting chamber, and the outlet of impulse hunting chamber communicates with impact transmission short circuit; Described reverse impactor be formed with pressure release runner and impact runner.
Described reverse impactor comprises upper press cover, impactor shell and joint ring; Described upper press cover is arranged on above impactor shell, and the two is inner formation fluid power impulse chamber after connecting; Impactor outer casing inner wall is formed with axisymmetric punching groove, half slot and pressure hole; Described impulse hunting chamber comprises conflux nozzle and backflow plug; The nozzle that confluxes is arranged on air deflector lower end, center, enters into impulse hunting chamber from impactor fluid out from the nozzle that confluxes, and flows out from backflow plug centre bore.
Described fluid power impulse chamber is provided with fluid operated hammer, commutator, center air deflector and throttle nozzle; Commutator is arranged between center air deflector and fluid operated hammer, and throttle nozzle is arranged on air deflector exit, center; Fluid operated hammer external surface is formed with axisymmetric hammer anvil, and hammer anvil is positioned at the punching groove of impactor shell; Fluid operated hammer inner surface is formed with axisymmetric reversing key, and reversing key extend in the reversing groove of commutator; Hammer anvil hole and commutation keyhole is had at hammer anvil and reversing key both sides; Described commutator external surface has axial symmetry scallop and reversing groove, and scallop has axial symmetry transitional pore, and relief hole is arranged at commutator bottom.
Described impact runner is communicated successively formed by threaded hole, hammer anvil hole, punching groove, and punching groove communicates with relief hole through hammer anvil hole, and relief hole exports with reverse impactor and communicates; Described pressure release runner is communicated successively formed by pressure hole, reversing groove, commutation keyhole, half slot, and described half slot exports with reverse impactor and communicates.
Described center air deflector is made up of threaded hole and base, and base is connected on pressure release support ring, and pressure release support ring is connected to and impacts transmission short circuit top.
Described reverse impactor, impulse hunting chamber, impact transmission short circuit are positioned on drill collar short circuit by location slips.
Described drill collar short circuit upper end pin thread is connected with top drill collar box end by API standard thread.
Described impact transmission short circuit lower end is connected with drill bit pin end by API standard thread.
Beneficial effect of the present invention: due to torsion, the Oscillatory Coupling impact shock of periodically stable frequency low-amplitude can be produced, therefore, this impulsive torque effectively eliminates the stick-slip of PDC drill bit and intermittent bit freezing phenomenon, and the vibration axial impact loading that instrument produces can improve drill teeth wedging rock, accelerate landwaste disengaging shaft bottom.This impactor does not have electronic unit, complete hydraulic machine structure, and size is less, and its impact process can not produce interference to brill Electrical Measuring Instrument.This instrument can ensure the stable and balance of drill string internal torque in drilling process, reduces drill string and reverses concussion, is conducive to MWD, LWD etc. with the steady operation boring Electrical Measuring Instrument.Easily worn part of the present invention is few, working stability, long service life, is conducive to reducing drilling cost.This impactor can produce torsion, the Oscillatory Coupling impact shock of periodically stable frequency low-amplitude, is a kind of multi-functional, multipurpose impactor.
Accompanying drawing explanation
Fig. 1 is that the nearly drill bit of the present invention reverses, the structural representation of Oscillatory Coupling impactor;
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.
In figure
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 nozzle
9. the nozzle 10. that confluxes impacts transmission short circuit 11. and to reflux plug
12. center air deflector 13. joint ring 14. tap hole 15. high pressure runners
Commutate keyhole 19. reversing key in 16. current by pass 17. grid shape holes 18.
20. half slot 21. reversing groove 22. pressure hole 23. scallop
24. transitional pore 25. hammer anvil 26. hammer anvil hole 27. punching grooves
28. relief holes 29. locate slips 30. exterior bayonet slot 31. spring eye
32. inner card cages.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As shown in Figure 1, the nearly drill bit torsion of the present invention, Oscillatory Coupling impactor 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, the lower end of drill collar short circuit 1 and location slips 29 and impact transmission short circuit 10 gap and be connected, be provided with current divider 2, impulse hunting chamber and reverse impactor between drill collar short circuit 1 inner top side portion and impact transmission short circuit 10.
The wherein multi-cavity structure that is jointly made up of screw thread platen 3, upper cover body 4, impactor shell 5, fluid operated hammer 6, commutator 7, throttle nozzle 8 and joint ring 13 of reverse impactor.
As shown in Figure 2, current divider 2 is V-arrangement funnel-shaped parts, and current divider 2 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 2 upper end; Drilling fluid fluid is divided into inside and outside two strands by current divider, the direction of flow high pressure runner 15 of outside, and flow in the reversing groove 21 in commutator 7 by pressure hole 22, commutation keyhole 19, uninterrupted to commutator feed flow; All the other internal flows are to center air deflector 12 feed flow.
Impactor shell 5 lower end of reverse impactor is connected with impact transmission short circuit 10 threaded upper ends, and center communicates.Impact transmission short circuit 10 lower end to be connected with drill bit pin end by API standard thread.Impact transmission short circuit 10 there are 4 to locate slips 29, for fixed shunt, reverse impactor, impulse hunting chamber and the position of impact transmission short circuit 10 in drill collar short circuit 1.
As shown in Figure 3, Figure 4, the upper cover body 4 of reverse impactor is on impactor shell 5, the two is inner formation fluid power impulse chamber 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 deflector 12 and fluid operated hammer 6, throttle nozzle 8 is arranged on center air deflector 12 exit, fluid operated hammer 6 and impactor shell 5 gap are installed, at joint ring 13, do cyclic movement between commutator 7 and impactor shell 5, commutator 7 does cyclic movement between joint ring 13, center air deflector 12; The upper and lower axle of fluid operated hammer 6 is arranged on impactor shell 5.Impactor shell 5 inwall has axial symmetry punching groove 27, half slot 20 and pressure hole 22; Fluid operated hammer 6 external surface has 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; Commutator 7 external surface has axial symmetry scallop 23 and reversing groove 21, and scallop 23 has axial symmetry transitional pore 24, and relief hole 28 is arranged at commutator 7 bottom; Center air deflector 12 is made up of grid shape hole 17, relief hole 28 and base, and its base is connected on impactor shell 5, and the nozzle that confluxes is arranged in the base of center air deflector 12, is threaded; Pressure release passage is communicated successively formed by pressure hole 22, reversing groove 21, commutation keyhole 18, half slot 20, and half slot 20 communicates with the relief hole 28 of center air deflector 12; Impact runner to be communicated successively by the grid shape hole 17 of center air deflector 12, hammer anvil hole 26, punching groove 27 and current by pass 16 and form, punching groove 27 communicates with current by pass 16 through hammer anvil hole 26, and current by pass 16 communicates with the relief hole 28 of center air deflector 12.Impulse hunting chamber has the nozzle 9 that confluxes, impactor shell 5 lower end and backflow plug 11 jointly to form, and enters into vibration chamber from impactor fluid out from the nozzle that confluxes, and flows out from backflow plug centre bore.
As shown in Figure 5, impact exterior bayonet slot 30 on transmission short circuit 10 corresponding with inner card cage 32 position on drill collar short circuit 1 and number, location slips 29 is installed in draw-in groove, in the slips of location, have spring eye 31, mounting spring between spring eye 31 and exterior bayonet slot 30.
During reverse impactor work of the present invention, the drill collar of rotation drives drill collar short circuit 1 to rotate, and the inner card cage 32 of drill collar short circuit 1 lower end is by location slips 29 and impact transmission short circuit 10 recessed bond ing, 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 shunts in air deflector 2, and fluid enters center current divider 12 by impactor shell 5, and all the other flow to the space of current divider 2 and drill collar short circuit 1 formation from the tap hole 14 of current divider 2; By center air deflector 12 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 to the nozzle that confluxes; The transitional pore 24 that the grid shape hole 17 of another part fluid in center air deflector 12 flows through the scallop 23 of commutator 7 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 export at impactor and converge, namely to nozzle place of confluxing; All fluids enter into impulse hunting chamber and impact transmission short circuit 10, then enter annular space space through bit nozzle; Under the acting in conjunction impacting fluid and commutation runner fluid in runner, fluid operated hammer 6, commutator 7 and impactor shell cooperative achievement hammer anvil 25 repeatedly moves in punching groove 27, produces torsional pulse, and passes to drill bit by impacting transmission short circuit 10.
It is worthy of note, protection scope of the present invention is not limited to above-mentioned instantiation mode, as long as those of ordinary skill in the art are without the need to through creative work, the embodiment that can associate all belongs to protection scope of the present invention.
Claims (7)
1. nearly drill bit torsion, an Oscillatory Coupling impactor, is characterized in that: comprise, drill collar short circuit (1), current divider (2), reverse impactor, impulse hunting chamber and impact transmission short circuit (10); The bottom of described drill collar short circuit (1) is connected with impact transmission short circuit (10), and described drill collar short circuit (1) inner circumferential is provided with current divider (2), reverse impactor and impulse hunting chamber, and described current divider (2) lower port communicates with reverse impactor entrance; Reverse impactor outlet communicates with the entrance in impulse hunting chamber, and the outlet of impulse hunting chamber communicates with impact transmission short circuit (10); Described reverse impactor be formed with pressure release runner and impact runner; Described reverse impactor comprises upper press cover (4), impactor shell (5) and joint ring (13); Described upper press cover (4) is arranged on above impactor shell (5), and the two is inner formation fluid power impulse chamber after connecting; Impactor shell (5) inwall is formed with axisymmetric punching groove (27), half slot (20) and pressure hole (22); Described impulse hunting chamber comprises the nozzle that confluxes (9) and backflow plug (11); The nozzle (9) that confluxes is arranged on center air deflector (12) lower end, enters into impulse hunting chamber from impactor fluid out from the nozzle that confluxes (9), and flows out from backflow plug (11) centre bore.
2. nearly drill bit torsion according to claim 1, Oscillatory Coupling impactor, is characterized in that: described fluid power impulse chamber is provided with fluid operated hammer (6), commutator (7), center air deflector (12) and throttle nozzle (8); Commutator (7) is arranged between center air deflector (12) and fluid operated hammer (6), and throttle nozzle (8) is arranged on center air deflector (12) exit; Fluid operated hammer (6) external surface is formed with axisymmetric hammer anvil (25), and hammer anvil (25) is positioned at the punching groove (27) of impactor shell (5); Fluid operated hammer (6) inner surface is formed with axisymmetric reversing key (19), and reversing key (19) extend in the reversing groove (21) of commutator (7); Hammer anvil hole (26) and commutation keyhole (18) is had at hammer anvil (25) and reversing key (19) both sides; Described commutator (7) external surface has axial symmetry scallop (23) and reversing groove (21), and scallop (23) has axial symmetry transitional pore (24), and relief hole (28) is arranged at commutator (7) bottom.
3. nearly drill bit torsion according to claim 1, Oscillatory Coupling impactor, it is characterized in that: described impact runner is communicated successively formed by grid shape hole (17), hammer anvil hole (26), punching groove (27), punching groove (27) communicates with relief hole (28) through hammer anvil hole, and relief hole (28) exports with reverse impactor and communicates; Described pressure release runner is communicated successively formed by pressure hole (22), reversing groove (21), commutation keyhole (18), half slot (20), and described half slot (20) exports with reverse impactor and communicates.
4. nearly drill bit torsion according to claim 1, Oscillatory Coupling impactor, it is characterized in that: described center air deflector (12) is made up of grid shape hole (17) and base, base is connected on pressure release support ring, and pressure release support ring is connected to and impacts transmission short circuit (10) top.
5. nearly drill bit torsion according to claim 1, Oscillatory Coupling impactor, is characterized in that: described reverse impactor, impulse hunting chamber, impact transmission short circuit (10) are positioned on drill collar short circuit (1) by location slips (29).
6. nearly drill bit torsion according to claim 1, Oscillatory Coupling impactor, 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.
7. nearly drill bit torsion according to claim 1, Oscillatory Coupling impactor, is characterized in that: described impact 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 |
|---|---|---|---|
| CN201310587333.4A CN103628815B (en) | 2013-11-20 | 2013-11-20 | A kind of nearly drill bit reverses, Oscillatory Coupling impactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310587333.4A CN103628815B (en) | 2013-11-20 | 2013-11-20 | A kind of nearly drill bit reverses, Oscillatory Coupling impactor |
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| Publication Number | Publication Date |
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| CN103628815A CN103628815A (en) | 2014-03-12 |
| CN103628815B true CN103628815B (en) | 2016-03-30 |
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| CN201310587333.4A Expired - Fee Related CN103628815B (en) | 2013-11-20 | 2013-11-20 | A kind of nearly drill bit reverses, Oscillatory Coupling impactor |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953281B (en) * | 2014-05-06 | 2016-01-13 | 北京信息科技大学 | composite impact drilling tool |
| CN104563862B (en) * | 2014-12-17 | 2016-09-28 | 中国石油大学(北京) | composite impact drilling tool |
| CN104533283B (en) * | 2014-12-26 | 2016-09-07 | 长江大学 | One surge circumference torsional impact generator |
| CN108222873B (en) * | 2016-12-22 | 2020-10-09 | 中国石油天然气股份有限公司 | Composite vibration impactor |
| CN108678659B (en) * | 2018-05-11 | 2023-06-23 | 西南石油大学 | Down-hole descending friction low-frequency impact drilling tool |
| CN109025827B (en) * | 2018-09-11 | 2020-04-14 | 中国石油集团长城钻探工程有限公司 | Hydraulic torsional pulse impactor for drilling speed increase |
| CN109915012B (en) * | 2019-04-23 | 2020-11-24 | 西南石油大学 | Hydraulic longitudinal-torsional coupling impactor |
| CN111255374B (en) * | 2020-02-21 | 2021-04-13 | 南通大学 | Anti-drill-sticking device and method for circumferential impact |
| CN113027329B (en) * | 2021-04-30 | 2023-07-14 | 四川天源宏创科技有限公司 | Double-acting tool for torque pulse and pressure pulse |
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| CN101463709A (en) * | 2009-01-08 | 2009-06-24 | 西南石油大学 | Torsional impact drilling tool |
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| EP2518255A1 (en) * | 2009-12-22 | 2012-10-31 | IN, Suk Sin | Air hammer for a boring machine |
| CN102966305A (en) * | 2012-12-11 | 2013-03-13 | 闫铁 | Near-bit circumferential resonance impacter |
| CN203594356U (en) * | 2013-11-20 | 2014-05-14 | 中国石油集团渤海钻探工程有限公司 | Near-bit torsion and oscillation coupling impactor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI20085961A0 (en) * | 2008-10-13 | 2008-10-13 | Atlas Copco Rotex Ab Oy | Method and drilling device for submersible drilling |
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2013
- 2013-11-20 CN CN201310587333.4A patent/CN103628815B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463709A (en) * | 2009-01-08 | 2009-06-24 | 西南石油大学 | Torsional impact drilling tool |
| EP2518255A1 (en) * | 2009-12-22 | 2012-10-31 | IN, Suk Sin | Air hammer for a boring machine |
| CN102454364A (en) * | 2010-10-19 | 2012-05-16 | 中国石油化工集团公司 | Torsional impact drilling tool |
| CN102966305A (en) * | 2012-12-11 | 2013-03-13 | 闫铁 | Near-bit circumferential resonance impacter |
| CN203594356U (en) * | 2013-11-20 | 2014-05-14 | 中国石油集团渤海钻探工程有限公司 | Near-bit torsion and oscillation coupling impactor |
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