CN205370438U - Gas drilling screw rod drilling tool of gas drive liquid self -loopa - Google Patents
Gas drilling screw rod drilling tool of gas drive liquid self -loopa Download PDFInfo
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- CN205370438U CN205370438U CN201521141500.3U CN201521141500U CN205370438U CN 205370438 U CN205370438 U CN 205370438U CN 201521141500 U CN201521141500 U CN 201521141500U CN 205370438 U CN205370438 U CN 205370438U
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- 239000007788 liquid Substances 0.000 title claims abstract description 86
- 238000005553 drilling Methods 0.000 title claims abstract description 69
- 230000005540 biological transmission Effects 0.000 claims abstract description 56
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 230000033001 locomotion Effects 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims description 47
- 230000003068 static effect Effects 0.000 claims description 14
- 238000005461 lubrication Methods 0.000 claims description 10
- 230000001050 lubricating effect Effects 0.000 claims description 9
- 239000010687 lubricating oil Substances 0.000 claims 4
- 238000006073 displacement reaction Methods 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 60
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 241001074085 Scophthalmus aquosus Species 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000021615 conjugation Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
本实用新型是一种气驱液自循环的气体钻井螺杆钻具，包括从上至下依次连接的马达总成、万向轴总成和传动轴总成，马达总成包括叶片、进气口、凸轮、气缸、活塞、连杆、排气口、进液口、液缸、液体单向阀、储液腔、排液口、注液腔、注液孔、防掉帽、转子、定子和马达总成壳体；气体钻井时，利用地面注入的高压气体推动活塞高速往复运动，驱动螺杆内部不可压缩液体实现自循环运动，将压力能转化为机械能，使液体推动转子转动，通过万向轴和传动轴输出平稳和足够大的扭矩给钻头，从而实现气体钻井定向钻进作业。本实用新型具有平稳输出扭矩、延长钻具使用寿命的效能。
The utility model is a self-circulating gas drilling screw drilling tool for gas driving liquid, which comprises a motor assembly, a cardan shaft assembly and a drive shaft assembly which are sequentially connected from top to bottom. The motor assembly includes blades, an air inlet , cams, cylinders, pistons, connecting rods, exhaust ports, liquid inlets, liquid cylinders, liquid check valves, liquid storage chambers, liquid discharge ports, liquid injection chambers, liquid injection holes, anti-drop caps, rotors, stators and Motor assembly housing; during gas drilling, the high-pressure gas injected from the ground is used to push the piston to reciprocate at high speed, and the incompressible liquid inside the screw is driven to realize self-circulation motion, and the pressure energy is converted into mechanical energy, so that the liquid pushes the rotor to rotate and passes through the cardan shaft And the transmission shaft outputs stable and large enough torque to the drill bit, so as to realize the directional drilling operation of gas drilling. The utility model has the effects of stably outputting torque and prolonging the service life of the drilling tool.
Description
Technical field
This utility model relates to drilling equipment technical field, a kind of for air drilling brill directional well, horizontal well and high angle hole specifically, utilizes gas drive liquid self-loopa, it is possible to steadily export the gas drilling helicoid hydraulic motor of moment of torsion.
Background technology
Gas drilling is the one of under-balanced drilling technology, mainly adopts air, nitrogen, natural gas or diesel engine vent gas etc. as the drilling technology of circulatory mediator.At present, air drilling by universally acknowledged for a kind of effective shortening drilling time, reduce drilling cost, liberation oil-gas Layer practical technique, it has also become the important means of oil gas field Efficient Development.But existing air drilling and equipment are mainly used in straight well, can't efficiently complete directed drilling and form directional well, horizontal well and multilateral well etc., seriously limit the range of application of gas drilling.The main cause causing gas drilling quagmire is a lack of being applicable to reliably the key equipment gas drilling helicoid hydraulic motor of gas drilling directional drilling.Owing to gas is compressibility medium, conventional gas helicoid hydraulic motor is in use exported, and torque value is low, moment of torsion output is unstable, cause drilling tool suppress stop and discharge after high-speed rotation, phenomenons such as " drivings " occurs, cause that existing gas drilling helicoid hydraulic motor poor performance, life-span are low, it is impossible to reliable and stable, carry out gas drilling directional drilling efficiently and safely.
Overcome " driving " phenomenon of gas screw rod, it is achieved the steady output of gas drilling moment of torsion, the service life extending drilling tool is that gas horizontal well drilling, directional well are successfully crucial.Therefore it is a kind of for gas brill directional well, horizontal well and high angle hole that utilitarian design is novel, utilizes gas drive liquid self-loopa, it is possible to steadily export the gas helicoid hydraulic motor of moment of torsion.This utility model is based on the mechanics of materials, engineering mechanics and hydrodynamics, by rational design, use for reference " electromotor " principle, make full use of gas drilling high pressure, big flow, compressibility recyclegas, under planned well " electromotor ", the gases at high pressure that surface compressor exports are utilized to promote electromotor down-hole screw-plunger mechanism to move back and forth at a high speed, inside screw incompressible liquid is driven to realize cyclic motions, liquid-driving rotor is made to rotate, the energy directional realizing gas pressure energy-mechanical energy (piston)-liquid pressure energy-mechanical energy (rotor) converts, export steady and sufficiently large moment of torsion to drill bit, thus realizing gas drilling directional drilling operation.
Utility model content
The purpose of this utility model is for above-mentioned Problems existing, it is provided that the gas drilling helicoid hydraulic motor of a kind of gas drive liquid self-loopa, it is possible to steadily export moment of torsion, bores the directional drilling operation of directional well, horizontal well and high angle hole for gas.
For achieving the above object, the technical solution adopted in the utility model is: the gas drilling helicoid hydraulic motor of a kind of gas drive liquid self-loopa, including the motor assembly being sequentially connected with from top to bottom, universal drive shaft assembly and driving-shaft assembly；
Described motor assembly includes blade, air inlet A, air inlet B, cam, cylinder A, cylinder B, piston A, piston B, connecting rod, air vent A, air vent B, inlet A, inlet B, fluid cylinder A, fluid cylinder B, liquid non-return valve A, liquid non-return valve B, liquid storage cylinder, leakage fluid dram A, leakage fluid dram B, fluid injection chamber, liquid injection hole, anti-caps off, rotor, stator and motor assembly housing；nullDescribed motor assembly housing internal upper part arranges two symmetrical cavitys，Piston A and piston B is set in described cavity，Cavity is divided into cylinder A corresponding to top and cylinder B by described piston A and piston B、Fluid cylinder A that bottom is corresponding and fluid cylinder B，Described connecting rod is located between piston A and piston B，Described air inlet A and air inlet B is all correspondingly arranged at cylinder A and the top of cylinder B，Described air vent A and air vent B is all correspondingly arranged at cylinder A and the top of cylinder B，Described cam is located between air inlet and cylinder、And it is coaxially connected with the blade being located at above air inlet A/B，Described cam rotation can control air inlet A、Air inlet B、Air vent A and air vent B is turned on and off，Described inlet A and inlet B is correspondingly arranged on the outer wall of fluid cylinder A and fluid cylinder B、And connect with fluid injection chamber，Connect with liquid storage cylinder with liquid non-return valve B each through corresponding liquid non-return valve A bottom described fluid cylinder A and fluid cylinder B；The bottom of motor assembly is located at by described stator, for having the pipe of spiral endoporus, described rotor is located in stator, and rotor helical-screw extends upwardly in liquid storage cylinder and prevents capping off connection, described rotor outer wall is coordinate with stator inner hole spiral yarn shaped, and stator engages with rotor conjugation.
Further, described universal drive shaft assembly includes universal drive shaft assembly shell, be located in universal drive shaft assembly shell universal drive shaft and rotor-universal drive shaft joint, described universal drive shaft is connected with the rotor bottom of motor assembly by rotor-universal drive shaft joint, the eccentric motion of rotor is transformed to the System of Rotating about Fixed Axis of power transmission shaft, transfers torque to power transmission shaft simultaneously.
Further, described driving-shaft assembly includes power transmission shaft, journal bearing and driving-shaft assembly housing, and described power transmission shaft is located in transmission shaft shell, and journal bearing is located between transmission shaft shell and power transmission shaft.
Further, described driving-shaft assembly also includes journal bearing moving-coil and upper radial bearing static ring of drive, and described upper journal bearing moving-coil and upper radial bearing static ring of drive are located between the transmission shaft shell on journal bearing and power transmission shaft, and forms the lubricating cavity for oil lubrication.
Further, described driving-shaft assembly also includes lower radial bearing moving-coil and lower radial bearing Jing Quan, and described lower radial bearing moving-coil and lower radial bearing Jing Quan are located between the transmission shaft shell under journal bearing and power transmission shaft, and forms the lubricating cavity for oil lubrication.
Further, described driving-shaft assembly also includes journal bearing moving-coil, upper radial bearing static ring of drive, lower radial bearing moving-coil and lower radial bearing Jing Quan；Described upper journal bearing moving-coil and upper radial bearing static ring of drive are located between the transmission shaft shell on journal bearing and power transmission shaft, and form the lubricating cavity for oil lubrication；Described lower radial bearing moving-coil and lower radial bearing Jing Quan are located between the transmission shaft shell under journal bearing and power transmission shaft, and form the lubricating cavity for oil lubrication.
Further, described anti-capping off is threaded between rotor.
Advantageous Effects of the present utility model is: compared with prior art, the gas drilling helicoid hydraulic motor of a kind of gas drive liquid self-loopa of this utility model, the gases at high pressure that gas drilling injects are utilized to promote high speed piston to move back and forth, inside screw incompressible liquid is driven to realize cyclic motions, liquid-driving screw rotor is utilized to rotate, export steady and sufficiently large moment of torsion to drill bit, thus realizing gas drilling directional drilling operation.Overcome " driving " phenomenon of conventional gas screw rod, it is achieved the steady output of gas drilling moment of torsion, extend the service life of drilling tool.This utility model is that gas brill directional well, horizontal well and extended reach well technology provide a kind of new equipment.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the 3-D view of the gas drilling helicoid hydraulic motor of a kind of gas drive liquid self-loopa of this utility model；
Fig. 2 is the structural representation of the gas drilling helicoid hydraulic motor of a kind of gas drive liquid self-loopa of this utility model
Fig. 3 is M-M sectional structure chart in Fig. 2；
Fig. 4 is N-N sectional structure chart in Fig. 2；
Fig. 5 is M-M section motor assembly schematic diagram of the present utility model.
Fig. 6 is N-N section motor assembly schematic diagram of the present utility model
Fig. 7 is A-A cross section view in Fig. 5 and Fig. 6, for cylinder intake runner cam mechanism schematic diagram of the present utility model；
Fig. 8 is B-B cross section view in Fig. 5 and Fig. 6, for cylinder intake runner hole of the present utility model and grate flow channel hole schematic diagram；
Fig. 9 is cam mechanism schematic three dimensional views of the present utility model；
Figure 10 is gas and liquid motion track schematic diagram in motor assembly reciprocating motion of the pistons process of the present utility model；
Figure 11 is the movement locus schematic diagram discharging gas in motor assembly reciprocating motion of the pistons process of the present utility model；
Figure 12 is discharge gas of the present utility model movement locus schematic diagram in universal drive shaft assembly and driving-shaft assembly；
nullNumber in the figure: 1-blade、2-motor assembly、3-universal drive shaft assembly、4-driving-shaft assembly、5-air inlet A、6-air inlet B、7-cam、8-cylinder A、9-cylinder B、10-piston A、11-piston B、12-connecting rod、13-air vent A、14-air vent B、15-inlet A、16-inlet B、17-fluid cylinder A、18-fluid cylinder B、19-liquid non-return valve A、20-liquid non-return valve B、21-liquid storage cylinder、22-leakage fluid dram A、23-leakage fluid dram B、24-fluid injection chamber、25-liquid injection hole、26-is anti-to be capped off、27-rotor、28-stator、29-motor assembly housing、30-rotor-universal drive shaft joint、31-universal drive shaft、32-universal drive shaft assembly shell、33-power transmission shaft、The upper journal bearing moving-coil of 34-、The upper radial bearing static ring of drive of 35-、36-journal bearing、37-lower radial bearing moving-coil、38-lower radial bearing Jing Quan、39-driving-shaft assembly housing.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Aspect and advantage that this utility model is additional will part provide in the following description, and these will become apparent from the description below, or is recognized by practice of the present utility model.
nullAs Figure 1-4，A kind of gas drilling helicoid hydraulic motor of gas drive liquid self-loopa，Including blade 1、Motor assembly 2、Universal drive shaft assembly 3、Driving-shaft assembly 4、Air inlet A5、Air inlet B6、Cam 7、Cylinder A8、Cylinder B9、Piston A10、Piston B11、Connecting rod 12、Air vent A13、Air vent B14、Inlet A15、Inlet B16、Fluid cylinder A17、Fluid cylinder B18、Liquid non-return valve A19、Liquid non-return valve B20、Liquid storage cylinder 21、Leakage fluid dram A22、Leakage fluid dram B23、Fluid injection chamber 24、Liquid injection hole 25、Prevent capping off 26、Rotor 27、Stator 28、Motor assembly housing 29、Rotor-universal drive shaft joint 30、Universal drive shaft 31、Universal drive shaft assembly shell 32、Power transmission shaft 33、Upper journal bearing moving-coil 34、Upper radial bearing static ring of drive 35、Journal bearing 36、Lower radial bearing moving-coil 37、The quiet circle 38 of lower radial bearing and driving-shaft assembly housing 39.
As it is shown in figure 1, the gas drilling helicoid hydraulic motor of a kind of gas drive liquid self-loopa, including being sequentially connected with motor assembly 2, universal drive shaft assembly 3 and driving-shaft assembly 4 from top to bottom；
As seen in figures 3-6, motor assembly 2 include blade 1, air inlet A5, air inlet B6, cam 7, cylinder A8, cylinder B9, piston A10, piston B11, connecting rod 12, air vent A13, air vent B14, inlet A15, inlet B16, fluid cylinder A17, fluid cylinder B18, liquid non-return valve A19, liquid non-return valve B20, liquid storage cylinder 21, leakage fluid dram A22, leakage fluid dram B23, fluid injection chamber 24, liquid injection hole 25, anti-cap off 26, rotor 27, stator 28 and motor assembly housing 29；
nullMotor assembly housing internal upper part arranges two symmetrical cavitys，Piston A and piston B is set in cavity，Cavity is divided into cylinder A corresponding to top and cylinder B by piston A and piston B、Fluid cylinder A that bottom is corresponding and fluid cylinder B，Connecting rod is located between piston A and piston B，Air inlet A and air inlet B is all correspondingly arranged at cylinder A and the top of cylinder B，Air vent A and air vent B is all correspondingly arranged at cylinder A and the top of cylinder B，Cam is located between air inlet and cylinder、And it is coaxially connected with the blade being located at above air inlet A/B，Cam rotation can control air inlet A、Air inlet B、Air vent A and air vent B is turned on and off，Inlet A and inlet B is correspondingly arranged on the outer wall of fluid cylinder A and fluid cylinder B、And connect with fluid injection chamber，Connect with liquid storage cylinder with liquid non-return valve B each through corresponding liquid non-return valve A bottom fluid cylinder A and fluid cylinder B；The bottom of motor assembly is located at by stator, and for having the pipe of spiral endoporus, rotor is located in stator, and rotor helical-screw extends upwardly in liquid storage cylinder and anti-caps off connection, and rotor outer wall is coordinate with stator inner hole spiral yarn shaped, and stator engages with rotor conjugation.
Motor assembly housing connects portion's drilling tool, ground gases at high pressure enter helicoid hydraulic motor cylinder runner by top drilling tool and motor assembly housing, band moving vane rotates, owing to cam is coaxial with blade, thus driving cam rotation, thus controlling the opening and closing of cylinder A, cylinder B air inlet and air vent, when the air inlet B of cylinder B opens, the air inlet A of cylinder A closes, the air vent B of cylinder B closes simultaneously, and the air vent A of cylinder A opens；Gases at high pressure are entered in cylinder B by air inlet B, piston B is promoted to move, the inlet B driving fluid cylinder B closes, liquid in fluid cylinder B is driven to enter liquid storage cylinder by liquid non-return valve B, simultaneously because piston A is connected by connecting rod with piston B, piston A moves round about, sucks self-loopa liquid from inlet A, and makes gas be discharged cylinder A by air vent A.
Universal drive shaft assembly includes universal drive shaft assembly shell 32, be located in universal drive shaft assembly shell universal drive shaft 31 and rotor-universal drive shaft joint 30, universal drive shaft is connected with the rotor bottom of motor assembly by rotor-universal drive shaft joint, the eccentric motion of rotor is transformed to the System of Rotating about Fixed Axis of power transmission shaft, transfers torque to power transmission shaft simultaneously.
Driving-shaft assembly includes power transmission shaft 33, journal bearing 36 and driving-shaft assembly housing 39, and power transmission shaft is located in transmission shaft shell, and journal bearing is located between transmission shaft shell and power transmission shaft.
In order to ensure power transmission shaft smooth operation, driving-shaft assembly also includes the quiet circle 38 of journal bearing moving-coil 34, upper radial bearing static ring of drive 35, lower radial bearing moving-coil 37 and lower radial bearing；Upper journal bearing moving-coil and upper radial bearing static ring of drive are located between the transmission shaft shell on journal bearing and power transmission shaft and form the lubricating cavity for oil lubrication；Lower radial bearing moving-coil and lower radial bearing Jing Quan are located between the transmission shaft shell under journal bearing and power transmission shaft and are formed the lubricating cavity for oil lubrication；Driving-shaft assembly bears the side force that rotor produces when the bending load that planetary motion causes and drill bit rotate, it is ensured that power transmission shaft can steadily export moment of torsion and transmission the pressure of the drill.
As it is shown in fig. 7, by the opening and closing of the Spin Control air inlet A of cam, air inlet B, air vent A and air vent B, control the inflow of gas and discharge cylinder A, cylinder B.
As shown in Figure 8 and Figure 9, inlet channel is walked around from cylinder top in exhaust passage, therefore has two air inlets, four air exits in B-B cross section view.
As shown in Figure 10, after the liquid with pressure energy enters liquid storage cylinder, by the formation of annular seal space, change and disappearance between rotor and stator, rotor is forced to do continuous motion in the stator, rotor rotates and drives universal drive shaft to rotate, then drives power transmission shaft to rotate, and in driving-shaft assembly, bush(ing) bearing bears produced by the pressure of the drill axially and radially load, ensureing that power transmission shaft can steadily export moment of torsion, the rotary power of motor is passed to drill bit by power transmission shaft again.Liquid flows out through rotor bottom leakage fluid dram A and leakage fluid dram B, and in influent circulation canal, when inlet B opens, liquid flows in fluid cylinder A.Liquid injection hole can be passed through and add circulation liquid on ground to fluid injection chamber, it is ensured that in motor, have the liquid requirement with satisfied driving rotor of abundance.Therefore, liquid realizes self-loopa in screw drilling tool motor, is rotated by liquid rotor driven, overcomes " driving " phenomenon of conventional gas screw rod, it is achieved the steady output of gas drilling moment of torsion, extends the service life of drilling tool.
As is illustrated by figs. 11 and 12, motor expellant gas enters gas flow channel in motor through air vent B, and by universal drive shaft assembly, enters in power transmission shaft, eventually enter into drill bit, it is achieved gas flowing in helicoid hydraulic motor.Universal drive shaft converts fixed-axis rotation to the eccentric motion of rotor, in conjunction with driving-shaft assembly, smoothly exports the rotating speed of motor and moment of torsion to drill bit.
This utility model gas drilling helicoid hydraulic motor two ends are female joint, connection top, one end drilling tool, and the other end connects drill bit.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (include technical term and scientific terminology) and have with the those of ordinary skill in this utility model art be commonly understood by identical meaning.Should also be understood that in such as general dictionary, those terms of definition should be understood that have the meaning consistent with the meaning in the context of prior art, and unless defined as here, will not explain by idealization or excessively formal implication.
One of ordinary skill in the art will appreciate that: the parts in device in embodiment can describe in the device being distributed in embodiment according to embodiment, it is also possible to carries out respective change and is disposed other than in one or more devices of the present embodiment.The parts of above-described embodiment can merge into parts, it is also possible to is further split into multiple subassembly.
It should be noted last that: above example is only in order to illustrative not limiting the technical solution of the utility model, although this utility model being described in detail with reference to above-described embodiment, it will be apparent to an ordinarily skilled person in the art that: still this utility model can be modified or equivalent replacement, without deviating from any modification or partial replacement of spirit and scope of the present utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521141500.3U CN205370438U (en) | 2015-12-31 | 2015-12-31 | Gas drilling screw rod drilling tool of gas drive liquid self -loopa |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521141500.3U CN205370438U (en) | 2015-12-31 | 2015-12-31 | Gas drilling screw rod drilling tool of gas drive liquid self -loopa |
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| Publication Number | Publication Date |
|---|---|
| CN205370438U true CN205370438U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521141500.3U Withdrawn - After Issue CN205370438U (en) | 2015-12-31 | 2015-12-31 | Gas drilling screw rod drilling tool of gas drive liquid self -loopa |
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| CN (1) | CN205370438U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484665A (en) * | 2015-12-31 | 2016-04-13 | 西南石油大学 | Gas drive liquid self-circulation gas drilling positive screw drill |
| CN106761383A (en) * | 2017-01-09 | 2017-05-31 | 西南石油大学 | A kind of gas drive is surged the air distributing device of gas screw drilling tool motor assembly |
| CN107269724A (en) * | 2017-06-14 | 2017-10-20 | 中石化石油工程技术服务有限公司 | Semi-automatic torque couple device |
| CN109750990A (en) * | 2019-03-21 | 2019-05-14 | 盐城市荣嘉机械制造有限公司 | An ultra-fine screw drill |
-
2015
- 2015-12-31 CN CN201521141500.3U patent/CN205370438U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484665A (en) * | 2015-12-31 | 2016-04-13 | 西南石油大学 | Gas drive liquid self-circulation gas drilling positive screw drill |
| CN106761383A (en) * | 2017-01-09 | 2017-05-31 | 西南石油大学 | A kind of gas drive is surged the air distributing device of gas screw drilling tool motor assembly |
| CN107269724A (en) * | 2017-06-14 | 2017-10-20 | 中石化石油工程技术服务有限公司 | Semi-automatic torque couple device |
| CN107269724B (en) * | 2017-06-14 | 2023-11-28 | 中石化石油工程技术服务有限公司 | Semi-automatic torque coupling device |
| CN109750990A (en) * | 2019-03-21 | 2019-05-14 | 盐城市荣嘉机械制造有限公司 | An ultra-fine screw drill |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160706 Effective date of abandoning: 20170801 |