CN103696762B - The swing valve type continuous-wave generator of rotation driving - Google Patents
The swing valve type continuous-wave generator of rotation driving Download PDFInfo
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- CN103696762B CN103696762B CN201310755291.0A CN201310755291A CN103696762B CN 103696762 B CN103696762 B CN 103696762B CN 201310755291 A CN201310755291 A CN 201310755291A CN 103696762 B CN103696762 B CN 103696762B
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Abstract
The invention discloses a kind of swing valve type continuous-wave generator of rotation driving, including：Drill collar and the continuous wave generating unit in drill collar, rotation swing transformation mechanism, power take-off unit and seal modules, pressure balance module and electrical connection module, and eccentrically mounted in the cavity of drill collar have installation set inside a drill collar；The continuous wave generating unit includes the stator installation set installed in drill collar central upper portion, the stator installed in stator installation set bottom and the malaria being connected below stator and with rotation swing transformation mechanism, on stator and malaria is respectively formed with throttle orifice；Described rotate swing transformation mechanism output power unit output convert rotational motion for traverse motion, and then make malaria and stator opposing oscillatory；The seal modules are used for making the lubricating oil inside outside mud and drill collar in installation set mutually isolated.Present configuration is simple, compact, reasonable in design, can reduce jam risk.
Description
Technical field
The present invention relates to petroleum gas drilling measuring technology field, more particularly to a kind of for downhole telemetry signal data
The continuous-wave generator of transmission.
Background technology
The drilling measuring technology for flourishing in recent years is strengthening the geology of extended reach well, highly difficult horizontal well, Multilateral Wells
It is oriented to, with aspects such as formation evaluation ability, raising reservoir-encountered rates, there is significant role.But as down-hole information amount is on the increase,
Status of the data signal high-speed transfer in measurement-while-drilling system design becomes increasingly conspicuous, and becomes drilling measuring technology and continues to send out forward
The problem that exhibition must be faced.
Current downhole telemetry signal data transmission technology can be divided into wired and wireless two kinds, and wired mainly have cable, optical fiber
Transmit with intelligent drilling rod, wirelessly then include mud-pulse transmission, three class transmission means of electromagnetic wave and sound wave.Wherein, although wired
Transmission has higher transfer rate, but the development cost of its great number makes many drilling technology service companies hang back；And
It is difficult that the deep fades characteristic of electromagnetic wave and sonic transmissions makes its application in deep-well, ultradeep well carry out step dimension.In general, mud
Pulse transmission, with its good reliability, on a large scale relatively low development cost, the global advantage such as application well depth, is to use at present
The most extensively, the great data transfer mode of development potentiality.
Downhole data mud-pulse transmission means has negative pulse, positive pulse, three kinds of continuous wave impulse by pulse pattern.Especially
, the leading edge developments direction that continuous wave impulse is higher with its transfer rate, strong antijamming capability becomes current mud-pulse transmission.
Continuous wave slurry pulse generator is produced continuous by changing the relative position of rotor and stator over-current section
Sine pressure wave, has two kinds of rotary valve type and shearing valve type at present.No matter any continuous-wave generator, all includes continuous wave arteries and veins
Rush generating unit, PTO and necessary pressure balance and seal modules.In rotary valve type continuous-wave generator,
Rotor is continuously rotated in Motor drive lower edge fixed-direction, produces throttling with stator.And in shearing valve type continuous-wave generator,
Motor-driven rotor reciprocally swinging between the maximum, minimum flow area that stator is formed, rectilinear oscillation produce throttling.With
Shearing valve type continuous-wave generator is compared, and rotary valve type continuous-wave generator is one-sided rotation, easy to adjust, and motor is required
Not high, but rotor jam phenomenon is also easy to produce, and shearing valve type continuous-wave generator can be prevented effectively from rotor obstruction, but which is frequently past
Multiple control mode proposes requirements at the higher level to electric system.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of two-fold advantage for combining rotary valve and shear valve, to produce
The swing valve type continuous-wave generator of the rotation driving of continuous sine wave mud signal.
As follows for this technical scheme：
A kind of swing valve type continuous-wave generator of rotation driving, including：Drill collar and the continuous wave in drill collar are sent out
Raw unit, rotation-oscillation transformation mechanism, power take-off unit and seal modules, pressure balance module and electrical connection module,
Eccentrically mounted in the cavity of drill collar have installation set inside a drill collar；
The continuous wave generating unit includes stator installation set installed in drill collar central upper portion, installed in stator installation set
The stator of bottom and the malaria being connected below stator and with the rotation-oscillation transformation mechanism, in stator and malaria
On be respectively formed with throttle orifice；
The power take-off unit outputting rotary power；
The convert rotational motion that the power take-off unit is exported by the rotation-oscillation transformation mechanism is moved for transverse reciprocating
Dynamic, and then malaria and stator opposing oscillatory is made, produce sinusoid continuous pressure ripple signal；
The seal modules are used for, when power take-off unit works, making the profit in installation set inside outside mud and drill collar
Lubricating oil is mutually isolated, and two-way leakage does not occur；
The pressure balance module is used for maintaining the lubricating oil pressure inside outside mud pressure and drill collar in installation set to exist
In appropriate pressure differential range, the external and internal pressure for reducing seal modules is poor.
On the one hand the electrical connection module is used for connecting generator power supply under outer well, another aspect and downhole controller
Communication, obtains related transmission data.
The rotation-oscillation transformation mechanism includes：Cam, sliding bar, slip rod set and spring, under the slip rod set
End is in installation set inside drill collar；The sliding bar is L-shaped, and its upper end is through malaria center square hole and stator center hole；
The sliding bar set upper side forms the cavity for accommodating spring and sliding bar bottom；Stretch into the cavity of slip rod set in the bottom of sliding bar
Interior, and swing is produced under the collective effect of cam and spring.
Be provided with cam installing hole on the cam, it is preferred that the center of circle with the cam installing hole as limit, outside cam
Polar diameter Φ of side each point meets following polar equation：
Wherein, R, q, FminAnd FmaxRespectively cam is installed on the inside of pore radius, polar angle, cam lateral surface and cam installing hole
Minimum and maximum distance between face.
Preferably, the stator, malaria and cam are formed using high-wearing feature materials processing, and stator and malaria are
Cylindrical, is respectively separated on the stator and malaria and is formed with multiple stator rectangular shaped slots and multiple malaria rectangular shaped slots, with
Form mud throttle orifice；When the sliding bar is maximum in lateral displacement, malaria is maximum with stator orifice size；When sliding bar exists
When lateral displacement is minimum, malaria is minimum with stator orifice size.
Preferably, each stator rectangular shaped slot is identical with the length of corresponding malaria rectangular shaped slot, and width is Fmax-Fmin.
The power take-off unit includes motor assembly, rotary transformer, shaft coupling, power transmission shaft, upper ball bearing, lower ball axle
Hold and thrust bearing, the motor assembly and rotary transformer are fixed on institute through motor assembly installation set and motor assembly positioning sleeve
State inside drill collar in the eccentric orfice of installation set, be connected with power transmission shaft by shaft coupling, realize power output, the thrust bearing,
Upper ball bearing and lower ball bearing support the power transmission shaft jointly；
The seal modules are located inside drill collar at the top of installation set, including the sealed taper being tightened on inside drill collar in installation set
Forming head, and the mud dust ring on power transmission shaft, mud sealing ring, sealing shroud and sealing shroud locking head；
The pressure balance module is located at power take-off unit bottom, including the eccentric orfice of installation set inside drill collar
Interior pressure balance axle and socket pressure balancing piston thereon；
The electric output module is located at the bottom of installation set inside drill collar, including electrical connector and the heart installed therein
Aviation plug.
Power transmission shaft, upper ball bearing on the eccentric axially bored line of installation set inside the drill collar, lower ball bearing, thrust axis
Hold, each central axis of motor assembly, rotary transformer and seal modules and pressure balance module is mutually coincided when mounted,
And installation set central axis meets below equation apart from D inside the central axis of installation set eccentric orfice and drill collar inside drill collar：
The motor assembly is made up of brshless DC motor and decelerator, and the brshless DC motor is that high temperature high power is little
Diameter motor, the rotary transformer are high temperature high precision angular speed, angular displacement sensor.
Present configuration is simple, compact, reasonable in design, based on cam mechanism motion principle, by the list of brshless DC motor
Direction is continuously converted into the reciprocally swinging of malaria, has the two-fold advantage of rotary valve and shear valve concurrently, is reducing motor regulation and control
While difficulty is with the design of fixed pendulum minor structure is simplified, jam risk can be reduced, there is very big practicality meaning to improving drilling safety
Justice.
Description of the drawings
Fig. 1 is the cross-sectional view of one embodiment of the continuous-wave generator of the present invention；
Fig. 2 is the structural representation of stator in the embodiment of the present invention；
Fig. 3 is the structural representation of malaria in the embodiment of the present invention；
Schematic diagrams of the Fig. 4 for embodiment of the present invention convexity wheel construction,
Wherein：
1. top connection, 2. stator, 3. malaria, is 4. driven axle lock nut, 5. cam, 6. mud dust ring,
7. mud sealing ring, 8. sealing shroud locking head, 9. power transmission shaft, 10. installation set inside drill collar, 11. bearing spacing rings,
12. jump rings, 13. shaft couplings, 14. motor assemblies, 15. rotary transformers, 16. pressure balance axles,
17. pressure balancing pistons, 18. electrical connectors, 19. lower contacts, 20. aviation plugs, 21. times oil is stifled,
22. holding wires, 23. motor assembly positioning sleeves, 24. motor assembly installation sets, 25. oil stifled, 26. thrust bearings,
27. times ball bearings, ball bearing on 28., 29. slip rod sets, 30. sealing conical heads, 31. sealing shrouds,
32. springs, 33. sliding bars, 34. slip stem jam nuts, 35. stator installation sets, 36. drill collars,
201. stator rectangular shaped slots, 202. stator center holes, 301. malaria slotted eyes, 302. malaria center square holes,
501. cam installing holes, 502. cam lateral surface.
Specific embodiment
Below in conjunction with the accompanying drawings technical scheme is made further clear and complete instructions.
In an embodiment of the present invention, for the ease of description, the relative position relation of each part is all in accordance with Figure of description
Layout being described, for example：Upper and lower position relation be according to each parts in Figure of description layout determining.
The embodiment of the present invention is further described below in conjunction with accompanying drawing：
As shown in figure 1, a kind of shearing valve type continuous-wave generator of rotation driving, including drill collar 36 and is arranged on drill collar 36
Interior continuous wave generating unit, rotation-oscillation transformation mechanism, power take-off unit, seal modules, pressure balance module and electrically
Link block.
Drill collar 36 is hollow annular solid, and the upper and lower ends car of drill collar has connection screw thread, be connected to respectively top connection 1 and under connect
19, for other outside drill collars interconnections.Eccentrically mounted inside drill collar 36 have installation set 10 inside drill collar, and the rotation-
Swing transformation mechanism, power take-off unit, seal modules, pressure balance module and electrical connection module to be installed in inside drill collar
In installation set 10.
The continuous wave generating unit includes：It is arranged on the stator installation set 35 of 36 central upper portion of drill collar, is arranged on stator
The stator 2 of 35 bottom of installation set and by slip stem jam nut 34 and the malaria 3 that is packed on rotation-oscillation transformation mechanism.
Malaria 3 forms opposing oscillatory between stator 2 in the presence of rotation-oscillation transformation mechanism.As shown in Fig. 2 stator 2 is designed to
Inside is provided with the cylindrical of some stator rectangular shaped slots 201, and center is provided with stator center hole 202, to stop sliding bar 33
Swing space.As shown in figure 3, malaria 3 is designed to the cylindrical that inside is provided with some malaria rectangular shaped slots 301, center is provided with
Malaria center square hole 302, for being fixedly connected with sliding bar 33.
The rotation-oscillation transformation mechanism includes cam 5, slip rod set 29, spring 32 and sliding bar 33.Slip rod set 29
Lower end inside the drill collar in installation set 10；Sliding bar 33 is L-shaped, and its upper end is through malaria center square hole 302 and stator
Centre bore 202；29 upper end of slip rod set forms the cavity for accommodating 33 bottom of spring 32 and sliding bar；Stretch into the bottom of sliding bar 33
In the cavity of slip rod set 29, and swing is produced under the collective effect of cam 5 and spring 32.
The power take-off unit includes motor assembly 14, rotary transformer 15, shaft coupling 13, power transmission shaft 9, upper ball bearing
28th, lower ball bearing 27, bearing spacing ring 11, jump ring 12 and thrust bearing 26.Rotary transformer 15 is under motor assembly 14
End, the two is fixed on inside drill collar in the eccentric orfice of installation set 10, through shaft coupling through motor assembly installation set 24 and positioning sleeve 23
13 are connected with power transmission shaft 9, realize power output.Thrust bearing 26 undertakes the axial thrust on power transmission shaft 9, and adopts upper ball bearing
28 and the mode of 27 common support of lower ball bearing, make power transmission shaft 9 stretch out longer in the case of still there is good stability.
The seal modules are located inside drill collar at the top of installation set 10, including being socketed on power transmission shaft 9 and being tightened on drill collar
The sealing conical head 30 of 10 upper end of internal installation set, and the sealing shroud 31, mud being socketed in successively on power transmission shaft 9 from top to bottom
Dust ring 6, mud sealing ring 7 and sealing shroud locking head 8.
The pressure balance module is located at power take-off unit bottom, including the bias of installation set 10 inside drill collar
Pressure balance axle 16 in hole and it is socketed in the pressure balancing piston 17 of 16 bottom of pressure balance axle.
Electrical connection module 10 bottom of installation set inside the drill collar, including electrical connector 18 and installed in electrically connecting
The aviation plug 20 at 18 lower end center of joint.
As shown in figure 4, cam installing hole 501 is provided with 5 end face of cam, biography is locked at by transmission axle lock nut 4
9 upper end of moving axis.As limit, polar diameter Φ of 502 each point of cam lateral surface meets following polar coordinate in the center of circle with cam installing hole 501
Equation：
Wherein, R, q, FminAnd FmaxRespectively cam is installed on the inside of pore radius, polar angle, cam lateral surface and cam installing hole
Minimum and maximum distance between face.
Stator 2, malaria 3 and cam 5 are formed using high-wearing feature materials processing, each stator rectangular shaped slot 201 with corresponding
The length of malaria rectangular shaped slot 301 is identical (depending on specific design is required), and width is Fmax-Fmin.
In embodiments of the invention, from high intensity compression spring 32 so that sliding bar 33 keeps closely connecing with cam 5
Touch, and the uniform rotation of power transmission shaft 9 is changed into traverse motion at contact line so that the relative pendulum of malaria 3 and stator 2
Move and can produce sinusoid continuous pressure ripple signal.Particularly, when lateral displacement is maximum, malaria 3 is throttled sliding bar 33 with stator 2
Area is maximum, and pressure wave amplitude is minimum, and sliding bar 33 is when lateral displacement is minimum, and malaria 3 is minimum with 2 orifice size of stator,
Pressure wave amplitude is maximum.
In embodiments of the invention, the mud dust ring 6 that is made from high-performance rubber and mud sealing ring 7, and with
Surface polishing process is done at the power transmission shaft 9 of the contact of mud sealing ring 7, to reach preferable rotary dynamic seal effect.
In embodiments of the invention, motor assembly 14 is made up of brshless DC motor and decelerator, and brshless DC motor is
High temperature high power minor diameter motor,
In embodiments of the invention, rotary transformer 15 is high temperature high precision angular speed, angular displacement sensor.
In order to ensure there is good heat transfer effect in running, power transmission shaft 9, upper ball bearing 28, lower ball bearing 27,
Thrust bearing 26, motor assembly 14, rotation transformer 15 etc. work in oil bath environment.
In embodiments of the invention, electrical cable is through electrical connector 18, the down-hole being located inside electrical connector 18
High-tension connector (not shown) is connected with instruments such as external generator, steering tools with aviation plug 20.
Power transmission shaft 9, upper ball bearing in embodiments of the invention, on the eccentric axially bored line of installation set inside drill collar 10
28th, lower ball bearing 27, thrust bearing 26, motor assembly 14, rotation transformer 15 and sealing and pressure balance module are being installed
When each central axis mutually coincide, and inside drill collar inside the central axis of 10 eccentric orfice of installation set and drill collar in installation set 10
Heart axial line distance D meets below equation：
Above example only in order to the technical scheme of the embodiment of the present invention to be described, rather than a limitation；Although with reference to aforementioned
Embodiment has been described in detail to embodiments of the present invention, it will be understood by those within the art that：Which still may be used
To modify to the technical scheme described in previous embodiment, or equivalent is carried out to which part technical characteristic；And
These modifications are replaced, and do not make the essence of appropriate technical solution depart from spirit and the model of embodiment of the present invention technical scheme
Enclose.
Claims (7)
1. the swing valve type continuous-wave generator of a kind of rotation driving, including：Drill collar (36) and the company in drill collar (36)
Continuous ripple generating unit, rotation-oscillation transformation mechanism, power take-off unit and seal modules, pressure balance module and electrically connect
Connection module, it is characterised in that：
Eccentrically mounted in the cavity of drill collar (36) have installation set (10) inside a drill collar；
The continuous wave generating unit includes stator installation set (35) installed in drill collar (36) central upper portion, pacifies installed in stator
The stator (2) of encapsulation (35) bottom and the malaria being connected installed in stator (2) below and with the rotation-oscillation transformation mechanism
(3), throttle orifice is respectively formed with stator (2) and malaria (3)；
The power take-off unit outputting rotary power；
The convert rotational motion that the power take-off unit is exported by the rotation-oscillation transformation mechanism for traverse motion,
And then malaria (3) and stator (2) opposing oscillatory is made, produce sinusoid continuous pressure ripple signal；
The seal modules are used for, when power take-off unit works, making the profit in installation set (10) inside outside mud and drill collar
Lubricating oil is mutually isolated, and two-way leakage does not occur；
The pressure balance module is used for maintaining the lubricating oil pressure inside outside mud pressure and drill collar in installation set (10) to exist
In appropriate pressure differential range, the external and internal pressure for reducing seal modules is poor；
On the one hand the electrical connection module is used for connecting generator power supply under outer well, on the other hand logical with downhole controller
Letter, obtains related transmission data；
The rotation-oscillation transformation mechanism includes：Cam (5), sliding bar (33), slip rod set (29) and spring (32), described
The lower end of slip rod set (29) is in installation set (10) inside drill collar；Sliding bar (33) are L-shaped, and its upper end is through pendulum
Subcenter square hole (302) and stator center hole (202)；Slip rod set (29) upper end forms and accommodates spring (32) and sliding bar
(33) cavity of bottom；The bottom of sliding bar (33) is stretched in the cavity of slip rod set (29), and in cam (5) and spring (32)
Collective effect under produce swing.
2. according to claim 1 swing valve type continuous-wave generator, it is characterised in that：It is provided with the cam (5)
Cam installing hole (501), as limit, polar diameter Φ of cam lateral surface (502) each point is full for the center of circle with the cam installing hole (501)
Be enough to lower polar equation：
Wherein, R, q, FminAnd FmaxRespectively cam install pore radius, between polar angle, cam lateral surface and cam installing hole medial surface
Minimum and maximum distance.
3. according to claim 2 swing valve type continuous-wave generator, it is characterised in that：Stator (2) and malaria (3)
Be cylindrical, be respectively separated on stator (2) and malaria (3) be formed with multiple stator rectangular shaped slot (201) and multiple
Malaria rectangular shaped slot (301), to form mud throttle orifice；When the sliding bar (33) is maximum in lateral displacement, malaria (3) with
Stator (2) orifice size is maximum；When sliding bar (33) is minimum in lateral displacement, malaria (3) is with stator (2) orifice size most
Little.
4. according to claim 3 swing valve type continuous-wave generator, it is characterised in that：Each stator rectangular shaped slot (201)
Identical with the length of corresponding malaria rectangular shaped slot (301), width is Fmax-Fmin.
5. the swing valve type continuous-wave generator according to any one of claim 1-4, it is characterised in that：
The power take-off unit includes motor assembly (14), rotary transformer (15), shaft coupling (13), power transmission shaft (9), upper ball
Bearing (28), lower ball bearing (27) and thrust bearing (26), motor assembly (14) and rotary transformer (15) are total through motor
It is fixed on inside the drill collar in the eccentric orfice of installation set (10) into installation set (24) and motor assembly positioning sleeve (23), by connection
Axle device (13) is connected with power transmission shaft (9), realizes power output, thrust bearing (26), upper ball bearing (28) and lower ball bearing
(27) power transmission shaft (9) is supported jointly；
The seal modules are located inside drill collar at the top of installation set (10), close in installation set inside drill collar (10) including being tightened on
Envelope conical head (30), and the mud dust ring (6) on the power transmission shaft (9), mud sealing ring (7), sealing shroud (31) and
Sealing shroud locking head (8)；
The pressure balance module is located at power take-off unit bottom, including the eccentric orfice of installation set (10) inside drill collar
Interior pressure balance axle (16) and socket pressure balancing piston (17) thereon；
The electric output module is located at the bottom of installation set (10) inside drill collar, including electrical connector (18) and installed in which
The aviation plug (20) at center.
6. according to claim 5 swing valve type continuous-wave generator, it is characterised in that inside the drill collar install
Power transmission shaft (9), upper ball bearing (28) on the eccentric axially bored line of set (10), lower ball bearing (27), thrust bearing (26), motor are total
Each central axis into (14), rotary transformer (15) and seal modules and pressure balance module is mutually coincided when mounted,
And inside drill collar inside the central axis of installation set (10) eccentric orfice and drill collar installation set (10) central axis apart from D meet with
Lower equation：
7. according to claim 5 swing valve type continuous-wave generator, it is characterised in that：Motor assembly (14) are by nothing
Brushless motor and decelerator are constituted, and the brshless DC motor is high temperature high power minor diameter motor, the rotary transformer
(15) it is high temperature high precision angular speed, angular displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310755291.0A CN103696762B (en) | 2013-12-29 | 2013-12-29 | The swing valve type continuous-wave generator of rotation driving |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310755291.0A CN103696762B (en) | 2013-12-29 | 2013-12-29 | The swing valve type continuous-wave generator of rotation driving |
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| Publication Number | Publication Date |
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| CN103696762A CN103696762A (en) | 2014-04-02 |
| CN103696762B true CN103696762B (en) | 2017-03-15 |
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| MX364392B (en) * | 2014-09-23 | 2019-04-25 | Halliburton Energy Services Inc | Well construction real-time telemetry system. |
| CN106884649B (en) * | 2017-05-03 | 2023-05-23 | 中国石油大学(北京) | Continuous wave signal generating device |
| CN109424357B (en) * | 2017-08-16 | 2023-09-01 | 中国石油化工股份有限公司 | Rotary valve type pressure pulse generator |
| CN108999607B (en) * | 2018-07-10 | 2021-11-23 | 中国石油集团渤海钻探工程有限公司 | Control valve nipple of drilling fluid pulse generator |
| CN109723433B (en) * | 2018-11-21 | 2020-03-27 | 山东鼎盛精工股份有限公司 | Underground continuous wave mud pulse generator |
| CN109751046B (en) * | 2019-01-28 | 2024-05-24 | 卢昌琴 | Device and method for generating pulse pressure wave by utilizing hydrodynamic driving shear valve |
| CN110847892A (en) * | 2019-12-06 | 2020-02-28 | 郑州士奇测控技术有限公司 | Dynamic seal and pressure balance structure of shear valve slurry pulse generator |
| CN111577261B (en) * | 2020-05-12 | 2020-11-20 | 中国科学院地质与地球物理研究所 | Underground pulse signal generator, pressure pulse transmission method, drill collar and drilling equipment |
| CN111691877B (en) * | 2020-05-28 | 2022-05-03 | 中海油田服务股份有限公司 | Control method and device of slurry pulse generator and readable storage medium |
| CN113482606B (en) * | 2021-05-14 | 2023-09-22 | 西南石油大学 | Underground signal receiving and transmitting device |
| CN113513310B (en) * | 2021-07-16 | 2022-11-29 | 中海油田服务股份有限公司 | Method for determining assembly angle of torsion shaft of swing valve pulse generator |
| CN113982570B (en) * | 2021-10-13 | 2023-08-29 | 湖北弘华长技机电有限公司 | Shear valve pulse generating device |
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| CN103696762A (en) | 2014-04-02 |
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