CN103607068B - Top-drive drilling slowspeed machine direct drive mechanism - Google Patents
Top-drive drilling slowspeed machine direct drive mechanism Download PDFInfo
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- CN103607068B CN103607068B CN201310576353.1A CN201310576353A CN103607068B CN 103607068 B CN103607068 B CN 103607068B CN 201310576353 A CN201310576353 A CN 201310576353A CN 103607068 B CN103607068 B CN 103607068B
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Abstract
The invention discloses a kind of top-drive drilling slowspeed machine direct drive mechanism, comprise hollow spindle, motor and controlling organization; Motor comprises motor upper cover, electric machine casing, swiveling head inner sleeve and stator rotor mechanism, and described motor upper cover, motor case and swiveling head inner sleeve are all set in outside hollow spindle; Described stator rotor mechanism is arranged in the seal cavity of motor upper cover, electric machine casing and hollow spindle formation, and described seal cavity is communicated with cold wind mechanism; Described stator rotor mechanism is salient-pole structure, adopts two-piece design; Described controlling organization comprises the brake gear that device for monitoring speed and hollow spindle are arranged.Top-drive drilling slowspeed machine direct drive mechanism provided by the invention, uses hollow spindle Direct driver drilling rod, does not need intermediate reduction gear mechanism, enormously simplify the structure of top-drive drilling, decrease a large amount of appurtenances; The design of electric machine structure simultaneously also makes drilling process become more steady.
Description
Technical field
The present invention relates to a kind of top-drive drilling, particularly relate to a kind of top-drive drilling slowspeed machine direct drive mechanism, belong to petroleum gas-drilling rig technology.
Background technology
In oil and gas well drilling process, top-drive drilling can from the direct rotary drill rod in upper derrick space, completes to creep into, circulating fluid, connect the multiple drill-well operations such as column, upper shackle and back reaming.Top-drive drilling significantly improves safety and the efficiency of drillng operation, has become the standardized product of oil drilling industry.
Current top-drive drilling major part all adopts the type of drive of DC motor, alternating current motor and hydraulic motor, and above-mentioned top-drive device needs to adopt gearbox to realize reducing rotating speed and increasing moment of torsion.The complicated structure of gearbox, overload capacity is poor, and the relevant lubrication and cooling facility of needs is more, causes the overall failure rate of top-drive device higher.For common alternating current machine, frequency converter can be adopted to realize the operation of TDS at low speed, but the dynamic characteristic of motor and frequency converter is deteriorated during low-frequency operation, high order harmonic component is more serious, output voltage waveforms Severe distortion, cause motor torque ripple and the motor feels hot, easily disturb peripheral equipment simultaneously.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of top-drive drilling slowspeed machine direct drive mechanism, has the features such as driving moment is large, low-speed characteristic good, mechanical structure is simple, failure rate is low.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
Top-drive drilling slowspeed machine direct drive mechanism, comprises hollow spindle, motor and controlling organization;
Described motor comprises motor upper cover, electric machine casing, swiveling head inner sleeve and stator rotor mechanism, and described motor upper cover, motor case and swiveling head inner sleeve are all set in outside hollow spindle; Motor upper cover outer rim and electric machine casing upper end outer fringe seal are fixed, and motor upper cover inner edge is connected with hollow spindle by upper end bearing, and the connecting portion between motor upper cover and hollow spindle is sealed by upper end seal; The lower end of described swiveling head inner sleeve is passed the lower port of electric machine casing and stretches out, the upper end of swiveling head inner sleeve engages with the lower end of electric machine casing, the bottom of electric machine casing is connected with hollow spindle by bottom end bearing, and the connecting portion between electric machine casing and hollow spindle is sealed by lower end seal;
Described stator rotor mechanism is arranged in the seal cavity of motor upper cover, electric machine casing and hollow spindle formation, and described seal cavity is communicated with cold wind mechanism; Described stator rotor mechanism is salient-pole structure, adopt two-piece design, namely described stator rotor mechanism comprises two stator rotor clamp mechanisms, gap is there is between two stator rotor clamp mechanisms, each stator rotor clamp mechanism includes stators and rotators, described stator sleeve is located at the outside of rotor, and described stator is fixed in motor case, and described rotor is set on hollow spindle;
Described controlling organization comprises the brake gear that device for monitoring speed and hollow spindle are arranged; Described device for monitoring speed comprises gear mechanism, speed encoder and angular encoder, described gear mechanism comprises driving gear, cingulum and driven gear, described driving gear and hollow spindle are coaxially fixed, connected by cingulum between driving gear and driven gear, described speed encoder and angular encoder are monitored driven gear.
When low-speed direct driving motor is arranged on top-drive drilling, the upper end of hollow spindle connects washing pipe assembly and is connected preventer with gooseneck, lower end and protects joint, forms a complete slurry channel; Described swiveling head inner sleeve can be connected with sleeve body with the swiveling head of top-drive drilling by parts such as adpting flanges, swiveling head is parts of top-drive drilling, be arranged on outside swiveling head inner sleeve, fluid motor-driven can be passed through, swiveling head can wraparound rotary head inner sleeve rotate, sleeve body is also parts of top-drive drilling, and its upper end and swiveling head inner sleeve are fixed, and lower end is connected with the back-up tong operated for upper shackle; By the signal of acquisition angles encoder and speed encoder, controlling organization can realize the accurate control to motor speed and the anglec of rotation, be conducive to the accurate location to helicoid hydraulic motor working face in directed drilling, thus reduce location number of times, increase work efficiency and drilling quality.
Because reduction box has energy loss, so transmission efficiency is less than 1 certainly when slowing down; And in this case, do not use gearbox structure, so improve transmission efficiency; Meanwhile, owing to eliminating reduction box and affiliated facility thereof, also just without the failure problems of reduction box and affiliated facility thereof, reduce rate of breakdown, improve the reliability of whole device.
Preferably, described brake gear comprises brake gear housing, brake gear upper end cover, brake gear bottom end cover, brake inner sleeve, brake disc and hydraulic jack, described brake gear housing, brake gear upper end cover and brake gear bottom end cover are all sleeved on hollow spindle, brake gear upper end cover covers brake gear housing upper end, brake gear bottom end cover covers brake gear housing lower end, described brake inner sleeve, brake disc and hydraulic jack are installed in brake gear housing, described brake inner sleeve to be sleeved on hollow spindle and to keep fixing with hollow spindle, described brake disc is fixed on outside brake inner sleeve, the stiff end of described hydraulic jack and brake gear housing keep fixing, two pressing plates of the compression motion end of described hydraulic jack lay respectively at the both sides up and down of brake disc.
Preferably, described brake gear upper end cover is provided with support, described speed encoder and angular encoder rack-mount.
Preferably, described electric machine casing is provided with drop handle installation site, drop handle is arranged on described drop handle installation site by drop handle bearing pin.
Preferably, described upper end bearing is circular cone thrust roller bearing, and described bottom end bearing is conical surface thrust roller bearing.
Preferably, the stator rotor number of poles of described stator rotor clamp mechanism is 32/24 pole, namely stator has 32 stator tooths and 32 stator slots, rotor has 24 rotor tooths and 24 rotor; Described stator is embedded with permanent magnet and stator winding, permanent magnet and stator winding set up motor internal magnetic field jointly, do not have winding in rotor, can as the passage of ventilation and heat; Described stator winding is concentratred winding, is made up of 32 coils, by being counterclockwise designated as C01 respectively, C02, C03 ..., Ci ..., C31, C32; Each coil has a and b two to enclose limit, namely encloses limit Cia and Cib and jointly forms coil Ci; Each stator tooth is embedded with a coil, two circle limits of coil are embedded in two adjacent stator slots respectively; 32 coils belong to A, B, C, D tetra-phase respectively, wherein, A phase is made up of C01, C05, C09, C13, C17, C21, C25 and C29 eight coils, B phase is made up of C02, C06, C10, C14, C18, C22, C26 and C30 eight coils, C phase is made up of C03, C07, C11, C15, C19, C23, C27 and C31 eight coils, and D phase is made up of C04, C08, C12, C16, C20, C24, C28 and C32 eight coils.
Preferably, the rated frequency of described stator rotor mechanism is 50Hz, rated speed is 125rpm, stator rotor mechanism carries out speed regulating control by frequency converter, and (speed adjustable range of frequency converter can be set within the scope of 0 ~ 100Hz, the maximum speed of such motor just can reach 250rpm), motor is run between 0 ~ 250rpm.This is designed with and is beneficial to motor radiating, also can improve the Performance And Reliability of motor simultaneously.
If the rated frequency design of motor is too low, motor is when upper shackle, and the frequency that frequency converter exports will lower than 1Hz, and make power high-order harmonic generation serious, wave distortion is serious, causes motor torque ripple and the motor feels hot.The rated frequency design of motor is when 50Hz, and the performance of frequency converter and motor can have greatly improved.
Beneficial effect: top-drive drilling slowspeed machine direct drive mechanism provided by the invention, use hollow spindle Direct driver drilling rod, do not need intermediate reduction gear mechanism, enormously simplify the structure of top-drive drilling, decrease a large amount of appurtenances, improve transmission efficiency and the reliability of top-drive drilling simultaneously; The design of electric machine structure simultaneously also improves low-speed characteristic and the dynamic characteristic of whole system, makes drilling process become more steady.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of stator rotor clamp mechanism.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Be illustrated in figure 1 a kind of top-drive drilling slowspeed machine direct drive mechanism, comprise hollow spindle 1, motor and controlling organization.
Described motor comprises motor upper cover 14, electric machine casing 15, swiveling head inner sleeve 25 and stator rotor mechanism, and described motor upper cover 14, motor case 15 and swiveling head inner sleeve 25 are all set in outside hollow spindle 1; Motor upper cover 14 outer rim and electric machine casing 15 upper end outer fringe seal are fixed, and motor upper cover 14 inner edge is connected with hollow spindle 1 by upper end bearing 16, and the connecting portion between motor upper cover 14 and hollow spindle 1 is sealed by upper end seal; The lower end of described swiveling head inner sleeve 25 is passed the lower port of electric machine casing 15 and stretches out, the upper end of swiveling head inner sleeve 25 engages with the lower end of electric machine casing 15, the bottom of electric machine casing 15 is connected with hollow spindle 1 by bottom end bearing 24, and the connecting portion between electric machine casing 15 and hollow spindle 1 is sealed by lower end seal.
In structure shown in Fig. 1, described upper end seal comprises the motor upper end bearing end cover 13 being positioned at upper end bearing 16 upper end and the motor upper end internal bearing cover 19 being positioned at upper end bearing 16 lower end, and described lower end seal comprises motor bottom end bearing inner cap 23.Described upper end bearing 16 is circular cone thrust roller bearing, and described bottom end bearing 24 is conical surface thrust roller bearing, bears axis and radial thrust.
Described stator rotor mechanism is arranged in the seal cavity of motor upper cover 14, electric machine casing 15 and hollow spindle 1 formation, and described seal cavity is communicated with cold wind mechanism; Described stator rotor mechanism be salient-pole structure (as shown in Figure 2, there are many outstanding teeth on the surface of rotor 21), adopt two-piece design, namely described stator rotor mechanism comprises two stator rotor clamp mechanisms, gap is there is between two stator rotor clamp mechanisms, each stator rotor clamp mechanism includes stator 18 and rotor 21, described stator 18 is set in the outside of rotor 21, described stator 18 is fixed in motor case 15, described rotor 21 is set on hollow spindle 1, for hollow spindle 1 provides driving power.
Described cold wind mechanism comprises cooling blower 22, and described cooling blower 22 is bolted on electric machine casing 15.
As shown in Figure 2, the stator rotor number of poles of described stator rotor clamp mechanism is 32/24 pole, namely stator 18 has 32 stator tooths and 32 stator slots, rotor 21 has 24 rotor tooths 32 and 24 rotor 33; Described stator 18 is embedded with permanent magnet 28 and stator winding 29, permanent magnet 28 and stator winding 29 set up motor internal magnetic field jointly, do not have winding in rotor 33, can as the passage of ventilation and heat; Described stator winding 29 is concentratred winding, is made up of 32 coils, by being counterclockwise designated as C01 respectively, C02, C03 ..., Ci ..., C31, C32; Each coil has a and b two to enclose limit, and namely circle limit Cia and Cib jointly forms coil Ci(circle limit C01a and C01b and jointly form coil C01, the like); Each stator tooth is embedded with a coil, two circle limits of coil are embedded in two adjacent stator slots respectively; 32 coils belong to A, B, C, D tetra-phase respectively, wherein, A phase is made up of C01, C05, C09, C13, C17, C21, C25 and C29 eight coils, B phase is made up of C02, C06, C10, C14, C18, C22, C26 and C30 eight coils, C phase is made up of C03, C07, C11, C15, C19, C23, C27 and C31 eight coils, and D phase is made up of C04, C08, C12, C16, C20, C24, C28 and C32 eight coils.
In Fig. 2, stator core 27 is overrided to form by after silicon steel punched chip; Rotor core 31 is also be overrided to form by after silicon steel punched chip; The middle part of rotor core 31 is provided with spindle hole, and hollow spindle 1 is embedded in spindle hole.
The rated frequency of described stator rotor mechanism is 50Hz, and rated speed is 125rpm, and stator rotor mechanism carries out speed regulating control by frequency converter, runs between 0 ~ 250rpm.
Described controlling organization comprises the brake gear that device for monitoring speed and hollow spindle 1 are arranged; Described device for monitoring speed comprises gear mechanism, speed encoder 8 and angular encoder 2, described gear mechanism comprises driving gear 3, cingulum 5 and driven gear 4, described driving gear 3 is coaxially fixed with hollow spindle 1, connected by cingulum 5 between driving gear 3 and driven gear 4, described speed encoder 8 and angular encoder 2 pairs of driven gears 4 are monitored.
Described brake gear comprises brake gear housing 12, brake gear upper end cover 7, be fixed on the brake gear bottom end cover on motor upper cover 14, brake inner sleeve 9, brake disc 10 and hydraulic jack 11, described brake gear housing 12, brake gear upper end cover 7 and brake gear bottom end cover are all sleeved on hollow spindle 1, brake gear upper end cover 7 covers brake gear housing 12 upper end, brake gear bottom end cover covers brake gear housing 12 lower end, described brake inner sleeve 9, brake disc 10 and hydraulic jack 11 are installed in brake gear housing 12, described brake inner sleeve 9 to be sleeved on hollow spindle 1 by flat key and to keep fixing with hollow spindle 1, described brake disc 10 is bolted on outside brake inner sleeve 9, the stiff end of described hydraulic jack 11 and brake gear housing 12 keep fixing, two pressing plates of the compression motion end of described hydraulic jack 11 lay respectively at the both sides up and down of brake disc 10.
Described brake gear upper end cover 7 is provided with support 6, and described speed encoder 8 and angular encoder 2 are installed on the frame 6, and described speed encoder 8 is connected with driven gear 4 respectively by spring coupling with angular encoder 2.
Described electric machine casing 15 is provided with drop handle installation site, and drop handle is arranged on described drop handle installation site by drop handle bearing pin 17.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. top-drive drilling slowspeed machine direct drive mechanism, is characterized in that: comprise hollow spindle (1), motor and controlling organization;
Described motor comprises motor upper cover (14), electric machine casing (15), swiveling head inner sleeve (25) and stator rotor mechanism, and described motor upper cover (14), motor case (15) and swiveling head inner sleeve (25) are all set in hollow spindle (1) outside; Motor upper cover (14) outer rim and electric machine casing (15) upper end outer fringe seal are fixed, motor upper cover (14) inner edge is connected with hollow spindle (1) by upper end bearing (16), and the connecting portion between motor upper cover (14) and hollow spindle (1) is sealed by upper end seal; The lower end of described swiveling head inner sleeve (25) is passed the lower port of electric machine casing (15) and stretches out, the upper end of swiveling head inner sleeve (25) engages with the lower end of electric machine casing (15), the bottom of electric machine casing (15) is connected with hollow spindle (1) by bottom end bearing (24), and the connecting portion between electric machine casing (15) and hollow spindle (1) is sealed by lower end seal;
Described stator rotor mechanism is arranged in the seal cavity that motor upper cover (14), electric machine casing (15) and hollow spindle (1) formed, and described seal cavity is communicated with cold wind mechanism; Described stator rotor mechanism is salient-pole structure, adopt two-piece design, namely described stator rotor mechanism comprises two stator rotor clamp mechanisms, gap is there is between two stator rotor clamp mechanisms, each stator rotor clamp mechanism includes stator (18) and rotor (21), described stator (18) is set in the outside of rotor (21), described stator (18) is fixed in motor case (15), and described rotor (21) is set on hollow spindle (1);
Described controlling organization comprises device for monitoring speed and the upper brake gear arranged of hollow spindle (1); Described device for monitoring speed comprises gear mechanism, speed encoder (8) and angular encoder (2), described gear mechanism comprises driving gear (3), cingulum (5) and driven gear (4), described driving gear (3) and hollow spindle (1) are coaxially fixed, connected by cingulum (5) between driving gear (3) and driven gear (4), described speed encoder (8) and angular encoder (2) are monitored driven gear (4);
Described brake gear comprises brake gear housing (12), brake gear upper end cover (7), brake gear bottom end cover, brake inner sleeve (9), brake disc (10) and hydraulic jack (11), described brake gear housing (12), brake gear upper end cover (7) and brake gear bottom end cover are all sleeved on hollow spindle (1), brake gear upper end cover (7) covers brake gear housing (12) upper end, brake gear bottom end cover covers brake gear housing (12) lower end, described brake inner sleeve (9), brake disc (10) and hydraulic jack (11) are installed in brake gear housing (12), described brake inner sleeve (9) is sleeved on hollow spindle (1) and goes up and keep fixing with hollow spindle (1), described brake disc (10) is fixed on brake inner sleeve (9) outside, the stiff end of described hydraulic jack (11) and brake gear housing (12) keep fixing, two pressing plates of the compression motion end of described hydraulic jack (11) lay respectively at the both sides up and down of brake disc (10).
2. top-drive drilling slowspeed machine direct drive mechanism according to claim 1, it is characterized in that: described brake gear upper end cover (7) is provided with support (6), described speed encoder (8) and angular encoder (2) are arranged on support (6).
3. top-drive drilling slowspeed machine direct drive mechanism according to claim 1, it is characterized in that: (15) are provided with drop handle installation site to described electric machine casing, drop handle is arranged on described drop handle installation site by drop handle bearing pin (17).
4. top-drive drilling slowspeed machine direct drive mechanism according to claim 1, it is characterized in that: described upper end bearing (16) is circular cone thrust roller bearing, described bottom end bearing (24) is conical surface thrust roller bearing.
5. top-drive drilling slowspeed machine direct drive mechanism according to claim 1, it is characterized in that: the stator rotor number of poles of described stator rotor clamp mechanism is 32/24 pole, namely stator (18) there are 32 stator tooths and 32 stator slots, rotor (21) have 24 rotor tooths (32) and 24 rotor (33); Described stator (18) is embedded with permanent magnet (28) and stator winding (29); Described stator winding (29) is concentratred winding, is made up of 32 coils, by being counterclockwise designated as C01 respectively, C02, C03 ..., Ci ..., C31, C32; Each coil has a and b two to enclose limit, namely encloses limit Cia and Cib and jointly forms coil Ci; Each stator tooth is embedded with a coil, two circle limits of coil are embedded in two adjacent stator slots respectively; 32 coils belong to A, B, C, D tetra-phase respectively, wherein, A phase is made up of C01, C05, C09, C13, C17, C21, C25 and C29 eight coils, B phase is made up of C02, C06, C10, C14, C18, C22, C26 and C30 eight coils, C phase is made up of C03, C07, C11, C15, C19, C23, C27 and C31 eight coils, and D phase is made up of C04, C08, C12, C16, C20, C24, C28 and C32 eight coils.
6. top-drive drilling slowspeed machine direct drive mechanism according to claim 1 or 5, it is characterized in that: the rated frequency of described stator rotor mechanism is 50Hz, rated speed is 125rpm, stator rotor mechanism carries out speed regulating control by frequency converter, runs between 0 ~ 250rpm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310576353.1A CN103607068B (en) | 2013-11-18 | 2013-11-18 | Top-drive drilling slowspeed machine direct drive mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310576353.1A CN103607068B (en) | 2013-11-18 | 2013-11-18 | Top-drive drilling slowspeed machine direct drive mechanism |
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| CN103607068A CN103607068A (en) | 2014-02-26 |
| CN103607068B true CN103607068B (en) | 2015-11-25 |
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| CN201310576353.1A Expired - Fee Related CN103607068B (en) | 2013-11-18 | 2013-11-18 | Top-drive drilling slowspeed machine direct drive mechanism |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014196A (en) * | 2016-07-12 | 2016-10-12 | 河北永明地质工程机械有限公司 | Top drive drilling device |
| CN106639861B (en) * | 2016-10-18 | 2017-12-08 | 绍兴悦植贸易有限公司 | A kind of road construction boring assemblies |
| CN106533098A (en) * | 2016-11-30 | 2017-03-22 | 中车永济电机有限公司 | Variable frequency speed regulation asynchronous motor with mechanical brake device for top drive |
| CN107425635A (en) * | 2017-07-26 | 2017-12-01 | 上海市雷智电机有限公司 | Integral type brake motor |
| CN108233610A (en) * | 2018-02-13 | 2018-06-29 | 安徽明腾永磁机电设备有限公司 | Vertical direct-drive permanent-magnet synchronous motor |
| CN109510422B (en) * | 2018-11-01 | 2021-04-06 | 贝兹维仪器(苏州)有限公司 | Electromagnetic drive motor and rotary steering drilling tool |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2191243C2 (en) * | 2000-04-18 | 2002-10-20 | Ухтинский государственный технический университет | Pipeless electric downhole motor |
| CN101075760A (en) * | 2007-06-21 | 2007-11-21 | 中国北车集团永济电机厂 | Vertical AC asynchronous topped driven motor |
| CN101317313A (en) * | 2005-10-03 | 2008-12-03 | 莱图尔诺技术演练系统有限公司 | Top drive drilling system using low-speed direct-driven AC motor, and application thereof |
| CN202978607U (en) * | 2012-12-20 | 2013-06-05 | 中国石油集团渤海钻探工程有限公司 | Installation structure of drilling machine top drive coder |
-
2013
- 2013-11-18 CN CN201310576353.1A patent/CN103607068B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2191243C2 (en) * | 2000-04-18 | 2002-10-20 | Ухтинский государственный технический университет | Pipeless electric downhole motor |
| CN101317313A (en) * | 2005-10-03 | 2008-12-03 | 莱图尔诺技术演练系统有限公司 | Top drive drilling system using low-speed direct-driven AC motor, and application thereof |
| CN101075760A (en) * | 2007-06-21 | 2007-11-21 | 中国北车集团永济电机厂 | Vertical AC asynchronous topped driven motor |
| CN202978607U (en) * | 2012-12-20 | 2013-06-05 | 中国石油集团渤海钻探工程有限公司 | Installation structure of drilling machine top drive coder |
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