CN103628815A - Near-bit torsion and oscillation coupling impactor - Google Patents
Near-bit torsion and oscillation coupling impactor Download PDFInfo
- Publication number
- CN103628815A CN103628815A CN201310587333.4A CN201310587333A CN103628815A CN 103628815 A CN103628815 A CN 103628815A CN 201310587333 A CN201310587333 A CN 201310587333A CN 103628815 A CN103628815 A CN 103628815A
- Authority
- CN
- China
- Prior art keywords
- impactor
- short circuit
- torsion
- impact
- reverse
- 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.)
- Granted
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a near-bit torsion and oscillation coupling impactor which comprises a drill collar pup joint, a splitter, a torsion impactor body, an impulse oscillation cavity and an impact transmission pup joint. The lower portion of the drill collar pup joint is connected with the impact transmission pup joint, the splitter, the torsion impactor body and the impulse oscillation cavity are installed on the inner circumference of the drill collar pup joint and a lower port of the splitter is communicated with an inlet of the torsion impactor body; an outlet of the torsion impactor body is communicated with an inlet of the impulse oscillation cavity and an outlet of the impulse oscillation cavity is communicated with the impact transmission pup joint; a pressure releasing flow channel and an impact flow channel are formed in the torsion impactor body. The near-bit torsion and oscillation coupling impactor has the advantages that due to the fact that high-frequency low-amplitude torsion which is stable in periodicity and oscillation coupling impact vibration can be generated, impact torque can effectively eliminate the phenomena of PDC bit stick slip and intermittent bit sticking; due to the fact that the near-bit torsion and oscillation coupling impactor is provided with no electronic part and is of a full-hydraulic mechanical structure, the size is small and the impact process has no interference to an electric instrument which conducts measurement while drilling. Parts which are prone to being damaged are few in the near-bit torsion and oscillation coupling impactor, and the near-bit torsion and oscillation coupling impactor is stable in work, long in service life and beneficial to lowering well 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
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.In the drilling well recovery process of oil, natural gas, well dynamic auxiliary rock instrument has become the useful of deep formation efficient rock-breaking technology and has supplemented.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, so percussion drilling tool is expected to become an important technical of deep-well speed-raising.
When using PDC drill bit to creep into above-mentioned stratum, can produce stick-slip effect, intermittent bit freezing phenomenon.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, have reduced 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 has described a kind of jet flow type shocker.
In order to improve the problems such as deep well mechanical drilling speed, the stick-slip effect that solves PDC drill bit, intermittent bit freezing, promote PDC drill bit steady operation, extend the application life of drill bit, patent US6742609B2 has designed the turbo-driven reverse impactor of a kind of drilling fluid, but this drilling tool complex structure, easily worn part is many and press consumption larger, be also restricted application life.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of can eliminate PDC drill bit in hard stick-slip, the nearly drill bit torsion of intermittent bit freezing, the Oscillatory Coupling impactor occurring during to hard formation or the broken rock of abrasive layer.
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, in described drill collar short circuit, current divider, reverse impactor and impulse hunting chamber is installed week, 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; On 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 be arranged on impactor shell above, the two is the inner fluid power impulse chamber that forms 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, from impactor fluid out, from the nozzle that confluxes, enters into impulse hunting chamber, 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; At hammer anvil and reversing key both sides, there are hammer anvil hole and commutation keyhole; Described 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.
Described impact runner is communicated and forms successively by threaded hole, hammer anvil hole, punching groove, and punching groove communicates with relief hole through hammer anvil hole, and relief hole communicates with reverse impactor outlet; Described pressure release runner is communicated and forms successively by pressure hole, reversing groove, commutation keyhole, half slot, and described half slot communicates with reverse impactor outlet.
Described center air deflector consists 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: owing to producing periodically stable high frequency torsion, Oscillatory Coupling impact shock by a narrow margin, therefore, this impulsive torque is effectively eliminated stick-slip and the intermittent bit freezing phenomenon of PDC drill bit, 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 be to producing interference with boring Electrical Measuring Instrument.This instrument can guarantee the stable and balance of drill string internal torque in drilling process, has reduced drill string and has reversed concussion, is conducive to MWD, LWD etc. with the steady operation that bores Electrical Measuring Instrument.Easily worn part of the present invention is few, working stability, and long service life, is conducive to reduce drilling cost.This impactor can produce periodically stable high frequency torsion, Oscillatory Coupling impact shock by a narrow margin, 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 nozzles
9. the nozzle 10. that confluxes impacts transmission short circuit 11. backflow plugs
12. center air deflector 13. joint ring 14. tap hole 15. high pressure runners
16. current by pass 17. grid shape hole 18. commutation keyhole 19. reversing keies
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 hole 29. location slips 30. exterior bayonet slot 31. spring eyes
32. inner card cages.
The specific embodiment
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 is connected with impact transmission short circuit 10 gaps with location slips 29, between drill collar short circuit 1 inner top side portion and impact transmission short circuit 10, current divider 2, impulse hunting chamber and reverse impactor is installed.
The Multicarity structure that wherein reverse impactor consists of jointly screw thread platen 3, upper cover body 4, impactor shell 5, fluid operated hammer 6, commutator 7, throttle nozzle 8 and joint ring 13.
As shown in Figure 2, current divider 2 is V-arrangement funnel-shaped parts, and current divider 2 lower port communicate with the entrance of reverse impactor, and connected mode, for being threaded, is distributed with 6 tap holes 14 in current divider 2 upper ends; Current divider is divided into inside and outside two strands by drilling fluid fluid, 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, uninterruptedly give commutator feed flow; All the other internal flows are to center air deflector 12 feed flows.
As shown in Figure 3, 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, at joint ring 13, commutator 7 and 5, impactor shell, do cyclic movement, commutator 7 is done cyclic movement 12 of joint ring 13, 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, at hammer anvil 25 and reversing key 19 both sides, have hammer anvil hole 26 and commutation keyhole 18; 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 consists 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 and forms successively by pressure hole 22, reversing groove 21, commutation keyhole 18, half slot 20, and the relief hole 28 of half slot 20Yu center air deflector 12 communicates; Impact runner is communicated and forms successively by grid shape hole 17, hammer anvil hole 26, punching groove 27 and the current by pass 16 of center air deflector 12, and punching groove 27 communicates with current by pass 16 through hammer anvil hole 26, and the relief hole 28 of current by pass 16Yu center air deflector 12 communicates.Impulse hunting chamber has the nozzle of confluxing 9, impactor shell 5 lower ends and backflow plug 11 jointly to form, and enters into vibration chamber, and flow out from backflow plug centre bore from impactor fluid out from the nozzle that confluxes.
As shown in Figure 5, on impact transmission short circuit 10, exterior bayonet slot 30 is corresponding with inner card cage 32 positions and number on drill collar short circuit 1, and location slips 29 is installed in draw-in groove, in the slips of location, has spring eye 31, mounting spring between spring eye 31 and exterior bayonet slot 30.
During reverse impactor of the present invention work, 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 gaps and be connected, and impact transmission short circuit 10 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 fluid enters center current divider 12 by impactor shell 5, and all the other tap holes 14 from current divider 2 flow to the space of current divider 2 and 1 formation of drill collar short circuit; By center air deflector 12, to impactor exit portion, internal flow can be divided into two parts: a part of fluid in the throttle nozzle 8 of center air deflector 12 out, directly to the nozzle that confluxes; The flow through transitional pore 24 of scallop 23 of commutator 7 of the grid shape hole 17 of another part fluid in center air deflector 12 enters hammer anvil hole 26, finally enter into punching groove 27, and finally from punching groove 27, by hammer anvil hole 26, enter into relief hole 28, this part fluid and front two parts fluid converge in impactor outlet, to the 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; In impacting 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, 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, needs only those of ordinary skills without process creative work, and the embodiment that can associate all belongs to protection scope of the present invention.
Claims (8)
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 interior week of described drill collar short circuit (1) 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); On described reverse impactor, be formed with pressure release runner and impact runner.
2. nearly drill bit torsion according to claim 1, Oscillatory Coupling impactor, is characterized in that: described reverse impactor comprises upper press cover (4), impactor shell (5) and joint ring (13); Described upper press cover (4) be arranged on impactor shell (5) above, the two is the inner fluid power impulse chamber that forms 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, from impactor fluid out, from the nozzle that confluxes (9), enters into impulse hunting chamber, and flows out from backflow plug (11) centre bore.
3. nearly drill bit torsion according to claim 2, 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); At hammer anvil (25) and reversing key (19) both sides, there are hammer anvil hole (26) and commutation keyhole (18); Described 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.
Nearly drill bit according to claim 1 reverse, Oscillatory Coupling impactor, it is characterized in that: described impact runner is by threaded hole (17), hammer anvil hole (26), punching groove (27) formation that communicates successively, punching groove (27) communicates with relief hole (28) through hammer anvil hole, and relief hole (28) communicates with reverse impactor outlet; Described pressure release runner is by pressure hole (22), reversing groove (21), commutation keyhole (18), half slot (20) formations that communicate successively, and described half slot (20) exports and communicates with reverse impactor.
Nearly drill bit according to claim 1 reverse, Oscillatory Coupling impactor, it is characterized in that: described center air deflector (12) consists of threaded hole (17) and base, it is upper that 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.
6. 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).
7. 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.
8. 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103628815A true CN103628815A (en) | 2014-03-12 |
| CN103628815B CN103628815B (en) | 2016-03-30 |
Family
ID=50210233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310587333.4A Expired - Fee Related CN103628815B (en) | 2013-11-20 | 2013-11-20 | A kind of nearly drill bit reverses, Oscillatory Coupling impactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103628815B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953281A (en) * | 2014-05-06 | 2014-07-30 | 北京信息科技大学 | Composite impact drilling tool |
| CN104533283A (en) * | 2014-12-26 | 2015-04-22 | 长江大学 | Hydraulic circumferential torque impact generator |
| CN104563862A (en) * | 2014-12-17 | 2015-04-29 | 中国石油大学(北京) | Composite impact well drilling tool |
| CN108222873A (en) * | 2016-12-22 | 2018-06-29 | 中国石油天然气股份有限公司 | Complex vibration impactor |
| CN108678659A (en) * | 2018-05-11 | 2018-10-19 | 西南石油大学 | A kind of underground drop is rubbed low frequency impact drilling tool |
| CN109025827A (en) * | 2018-09-11 | 2018-12-18 | 中国石油集团长城钻探工程有限公司 | A kind of drilling speed fluid power torsional pulses impactor |
| CN109915012A (en) * | 2019-04-23 | 2019-06-21 | 西南石油大学 | Hydraulic longitrorse coupled surge device |
| CN111255374A (en) * | 2020-02-21 | 2020-06-09 | 南通大学 | Anti-drill-sticking device and method for circumferential impact |
| CN113027329A (en) * | 2021-04-30 | 2021-06-25 | 四川天源宏创科技有限公司 | Torque pulse and pressure pulse double-acting tool |
Citations (6)
| 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 |
| WO2010043757A1 (en) * | 2008-10-13 | 2010-04-22 | Oy Atlas Copco Rotex Ab | Method and drilling apparatus for down-the-hole drilling |
| CN102454364A (en) * | 2010-10-19 | 2012-05-16 | 中国石油化工集团公司 | Torsional impact drilling tool |
| 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 |
-
2013
- 2013-11-20 CN CN201310587333.4A patent/CN103628815B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010043757A1 (en) * | 2008-10-13 | 2010-04-22 | Oy Atlas Copco Rotex Ab | Method and drilling apparatus for down-the-hole drilling |
| 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 |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953281A (en) * | 2014-05-06 | 2014-07-30 | 北京信息科技大学 | Composite impact drilling tool |
| CN103953281B (en) * | 2014-05-06 | 2016-01-13 | 北京信息科技大学 | composite impact drilling tool |
| CN104563862A (en) * | 2014-12-17 | 2015-04-29 | 中国石油大学(北京) | Composite impact well drilling tool |
| CN104533283A (en) * | 2014-12-26 | 2015-04-22 | 长江大学 | Hydraulic circumferential torque impact generator |
| CN108222873A (en) * | 2016-12-22 | 2018-06-29 | 中国石油天然气股份有限公司 | Complex vibration impactor |
| CN108678659A (en) * | 2018-05-11 | 2018-10-19 | 西南石油大学 | A kind of underground drop is rubbed low frequency impact drilling tool |
| CN109025827A (en) * | 2018-09-11 | 2018-12-18 | 中国石油集团长城钻探工程有限公司 | A kind of drilling speed fluid power torsional pulses impactor |
| 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 |
| CN109915012A (en) * | 2019-04-23 | 2019-06-21 | 西南石油大学 | Hydraulic longitrorse coupled surge device |
| CN111255374A (en) * | 2020-02-21 | 2020-06-09 | 南通大学 | Anti-drill-sticking device and method for circumferential impact |
| WO2021164091A1 (en) * | 2020-02-21 | 2021-08-26 | 南通大学 | Circumferential impact drill anti-jamming device and method |
| CN113027329A (en) * | 2021-04-30 | 2021-06-25 | 四川天源宏创科技有限公司 | Torque pulse and pressure pulse double-acting tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103628815B (en) | 2016-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103628815B (en) | A kind of nearly drill bit reverses, Oscillatory Coupling impactor | |
| CN103628819B (en) | A kind of nearly drill bit reverse impactor | |
| CN107842317A (en) | Hard-rock boring punching composite drill bit | |
| CN102966305B (en) | Near-bit circumferential resonance impacter | |
| CN102733756B (en) | Vibration and pressure well drilling tool | |
| CN103075097A (en) | Torsional impact drilling acceleration tool | |
| CN105927144B (en) | Underground speed-raising instrument with axial impact function | |
| CN203594365U (en) | Near-bit torsional impactor | |
| CN206129207U (en) | Novel oscillatory surge ware based on turbine and cam | |
| CN105401879A (en) | Rotary drilling machine for reverse-circulation pneumatic down hole hammer and construction method for rotary drilling machine | |
| CN107605396B (en) | A kind of shunt penetrates suction hydraulic impacter | |
| CN110159189B (en) | Hydraulic composite impactor and control method thereof | |
| CN111219147B (en) | Petroleum drilling speed-up equipment | |
| CN203145879U (en) | Combined core drilling tool for improving core drilling effect of broken stratum | |
| CN203594356U (en) | Near-bit torsion and oscillation coupling impactor | |
| CN103821452B (en) | A kind of frequency low-amplitude axial impact device | |
| CN204002578U (en) | A kind of strong pumping formula reverse cycle coring drill bit | |
| CN108222873A (en) | Complex vibration impactor | |
| CN106761386B (en) | A kind of drilling well auxiliary rock tool | |
| CN106437518A (en) | Throttle-type pulse vibration drilling tool | |
| CN205089217U (en) | Drilling tool with shock attenuation effect | |
| CN209586256U (en) | Dither hydraulic generator | |
| CN203050499U (en) | Near-bit peripheral resonance impactor | |
| CN208845097U (en) | A kind of composite impact drilling speed device | |
| CN207436906U (en) | The two-way high frequency composite impact device of turbine type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20160330 Termination date: 20191120 |