CN103628858A - Emergency stop control system based on drilling machine integrated control - Google Patents
Emergency stop control system based on drilling machine integrated control Download PDFInfo
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- CN103628858A CN103628858A CN201310568165.4A CN201310568165A CN103628858A CN 103628858 A CN103628858 A CN 103628858A CN 201310568165 A CN201310568165 A CN 201310568165A CN 103628858 A CN103628858 A CN 103628858A
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Abstract
The invention discloses an emergency stop control system based on drilling machine integrated control. The emergency stop control system based on drilling machine integrated control comprises an integrated control system action emergency stop assembly and an integrated control system power emergency stop assembly. The integrated control system action emergency stop assembly is connected with a corresponding sub-equipment emergency stop system. The integrated control system power emergency stop assembly is connected with a hydraulic station motor and a power generator respectively. The integrated control system action emergency stop assembly comprises an action safety relay, expansion modules of the action safety relay, a main driller action emergency stop button, an auxiliary driller action emergency stop button and a master site emergency stop button. The integrated control system power emergency stop assembly comprises a power safety relay, expansion modules of the power safety relay, a main driller power emergency stop button and an auxiliary driller power emergency stop button. The whole emergency stop control system is arranged from top to bottom and is rigorous in structure, emergency stop switches in all levels are clear in labor division, a pyramid-type emergency stop structure is formed, and therefore the emergency stop control system is safe and reliable.
Description
Technical field
The invention belongs to electric automatization control technology field, relate to a kind of urgency based on the integrated control of rig and stop control system.
Background technology
Along with oil drilling machine and the development with rapid changepl. never-ending changes and improvements of automated drilling rig product, rig integrated control system has boundless prospect in oil drilling industry.
Generally, the rig of being furnished with integrated control system is except having conventional indispensable equipment, toward contact be equipped with that top is driven, tubing string automated programming system etc. can be simplified labour intensity, increase the equipment of safety factor.When unusual condition occurs at scene, how site operation personnel, in the face of so many equipment, carries out emergent stopping to equipment and just becomes the safe key point of assurance.
Summary of the invention
The object of this invention is to provide a kind of urgency based on the integrated control of rig and stop control system, solved and existed in prior art, when unusual condition occurs at scene, site operation personnel, in the face of so many equipment, can not carry out to equipment the problem of emergent stopping.
The technical solution adopted in the present invention is, a kind of urgency based on the integrated control of rig is stopped control system, comprise anxious assembly and the anxious assembly that stops of integrated control system power of stopping of integrated control system action, the anxious assembly that stops of integrated control system action is connected respectively with corresponding subset exigency stop system; Integrated control system power suddenly stops assembly and is connected respectively with hydraulic motor and generator.
Urgency based on the integrated control of rig of the present invention is stopped control system, and its feature is also:
The anxious structure of stopping assembly of integrated control system action is, comprises that action safety relay and expansion module thereof, main driller move scram button, deputy driller and move scram button and on-the-spot total scram button; Input and the main driller of action safety relay moves scram button, deputy driller and moves scram button, on-the-spot total scram button and connect successively, and the output of safety relay of moving is connected with the corresponding interface of subset exigency stop system.
The anxious structure of stopping assembly of integrated control system power is to comprise power safety relay and expansion module thereof, main driller's power scram button and deputy driller's power scram button; The input of power safety relay is connected with main driller's power scram button and deputy driller's power emergency stop switch, and the output of power safety relay stops with Hydraulic Station is anxious that interface and generator are anxious to stop interface and be connected respectively.
Subset exigency stop system, comprises pushing up and drives exigency stop system, vertical tube drawbench exigency stop system, iron driller exigency stop system, rotating disk exigency stop system, well drilling hoist exigency stop system, dynamic catwalk exigency stop system, slush pump exigency stop system; The corresponding interface of subset exigency stop system comprises that vertical tube drawbench is anxious and stops that interface, well drilling hoist are anxious stops that interface, rotating disk are anxious stops that interface, mud sudden-stop of bump interface, iron driller suddenly stop interface, anxious interface and the anxious interface that stops of dynamic catwalk of stopping is driven on top.
Top is driven exigency stop system and is comprised safety relay one, the input of safety relay one and top are driven control cabinet scram button and top and are driven and suddenly stop interface and connect successively, and the output of safety relay one drives the MCC and the spare extension interface that the DO module of PLC and amplifier, top drive and is connected respectively with pushing up.
Vertical tube drawbench exigency stop system comprises safety relay two, the input of safety relay two suddenly stops interface with vertical tube drawbench and the on-the-spot scram button of several vertical tube drawbenches is connected successively, and the output of safety relay two is connected respectively with DO module for power supply and amplifier, DI module and the spare extension interface of the PLC of vertical tube drawbench.
Iron driller exigency stop system comprises safety relay three, and the input of safety relay three is connected successively with anxious interface, the on-the-spot scram button of iron driller, iron driller body scram button and the wireless receiver of stopping of iron driller; The output of safety relay three is connected respectively with DO module for power supply and amplifier, DI module and the spare extension interface of iron driller.
Rotating disk exigency stop system comprises safety relay four, and the input of safety relay four and rotating disk suddenly stop interface direct and connect in succession; The output of safety relay four is connected respectively with rotary tray motor, DI module and spare extension interface.
Well drilling hoist exigency stop system comprises safety relay five, and the input of safety relay five and well drilling hoist suddenly stop interface direct and connect in succession; DI module and the spare extension interface of the output Yu Pansha mechanism of safety relay five, the PLC of well drilling hoist electric-control system connect respectively.
Dynamic catwalk exigency stop system comprises safety relay six, the input of safety relay six is connected successively with anxious interface, the on-the-spot scram button of several dynamic catwalks and the wireless receiver of stopping of dynamic catwalk, and the output of safety relay six is connected respectively with DO module for power supply and amplifier, DI module and the spare extension interface of dynamic catwalk;
Described slush pump exigency stop system comprises safety relay seven, and the input of safety relay seven and mud sudden-stop of bump interface direct connect in succession; The output of safety relay seven is connected respectively with DI module and the spare extension interface of the PLC of slush pump motor, slush pump electric-control system.
The invention has the beneficial effects as follows: 1) whole urgency is stopped control system from top to bottom, of a tightly knit structure, the emergency stop switch division of labor at different levels is clear and definite, and the urgency that forms a pyramid is stopped structure; 2) site operation personnel stops the action of this subset by the scram button of operation subset, on other equipment without impact; 3) driller operating personnel stop the action of all devices or the power source of all devices by operating total scram button, safe and reliable.
Accompanying drawing explanation
Fig. 1 is total single line connection diagram of rig exigency stop system of the present invention;
Fig. 2 is the connection diagram 1 of the total exigency stop system of rig of the present invention;
Fig. 3 is the connection diagram 2 of the total exigency stop system of rig of the present invention;
Fig. 4 is the structural representation that exigency stop system is driven on the top in the present invention;
Fig. 5 is the structural representation of the vertical tube drawbench exigency stop system in the present invention;
Fig. 6 is the structural representation of the iron driller exigency stop system in the present invention;
Fig. 7 is the structural representation of the rotating disk exigency stop system in the present invention;
Fig. 8 is the structural representation of the well drilling hoist exigency stop system in the present invention;
Fig. 9 is the structural representation of the dynamic catwalk exigency stop system in the present invention;
Figure 10 is the structural representation of the slush pump exigency stop system in the present invention.
In figure, 1. integrated control system action suddenly stops assembly, 2. integrated control system power suddenly stops assembly, 3. subset exigency stop system, 4. action safety relay, 5. main driller moves scram button, 6. deputy driller moves scram button, 7. on-the-spot total scram button, 8. power safety relay, 9. main driller's power scram button, 10. deputy driller's power scram button, exigency stop system is driven on 11. tops, 12. vertical tube drawbench exigency stop systems, 13. iron driller exigency stop systems, 14. rotating disk exigency stop systems, 15. well drilling hoist exigency stop systems, 16. dynamic catwalk exigency stop systems, 17. slush pump exigency stop systems, 18. hydraulic motors, 19. generators.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The urgency that the present invention is based on the integrated control of rig is stopped control system, major control object in embodiment comprises that top is driven, vertical tube drawbench, iron driller, rotating disk, well drilling hoist, dynamic catwalk and slush pump, and these controlled devices are also the basic setups in common work progress.
With reference to Fig. 1, the present invention suddenly stops control system according to function, comprise anxious assembly 1 and the anxious assembly 2 that stops of integrated control system power of stopping of integrated control system action, integrated control system action suddenly stops assembly 1 and is connected respectively with the corresponding subset exigency stop system 3 as control object; Integrated control system power suddenly stops assembly 2 and is connected respectively with hydraulic motor 18 and generator 19 as control object.
With reference to Fig. 2, the anxious structure of stopping assembly 1 of integrated control system action is, comprise action safety relay 4 and expansion module thereof, main driller moves scram button 5, deputy driller moves scram button 6 and on-the-spot total scram button 7, input (the S10 of action safety relay 4, S11, S12 interface end) move scram button 5 with the main driller who is positioned at main driller's active station, the deputy driller who is positioned at deputy driller's active station moves scram button 6, on-the-spot total scram button 7 is connected successively, the output of action safety relay 4 is connected with the corresponding interface of each subset exigency stop system 3, these corresponding interfaces comprise the anxious interface that stops of vertical tube drawbench, the anxious interface that stops of well drilling hoist, the anxious interface that stops of rotating disk, mud sudden-stop of bump interface, the anxious interface that stops of iron driller, anxious interface and the anxious interface that stops of dynamic catwalk of stopping is driven on top.
The anxious assembly 1 that stops of integrated control system action is realized stopping of all devices action based on action safety relay 4.Take suddenly and stop to activate the safety relay in all subset exigency stop systems 3.
With reference to Fig. 3, the anxious structure of stopping assembly 2 of integrated control system power is to comprise that power safety relay 8 and expansion module thereof, main driller's power scram button 9 and deputy driller's power scram button 10 form.The input of power safety relay 8 (S10, S11, S12 interface end) is connected with the deputy driller's power emergency stop switch 10 that is positioned at deputy driller's work station with the main driller's power scram button 9 that is positioned at main driller's work station, and the output of power safety relay 8 suddenly stops the anxious interface control connection of stopping of interface and generator with Hydraulic Station respectively.
Suddenly stop assembly 2 realizes the disconnection of all power sources to integrated control system power based on power safety relay 8.Take suddenly and stop to realize: a) hydraulic motor 18 quits work; B) generator 19 is out of service.
With reference to Fig. 4-Figure 10, each subset exigency stop system 3 of the embodiment of the present invention, comprises pushing up and drives exigency stop system 11, vertical tube drawbench exigency stop system 12, iron driller exigency stop system 13, rotating disk exigency stop system 14, well drilling hoist exigency stop system 15, dynamic catwalk exigency stop system 16, slush pump exigency stop system 17.
With reference to Fig. 4, exigency stop system 11 is driven based on safety relay one realization in top.The input of safety relay one and top are driven control cabinet scram button and top and are driven the anxious interface (the total anxious output that stops safety relay of action) that stops and connect successively, and the output of safety relay one drives the MCC and the spare extension interface that the DO module of PLC and amplifier, top drive and is connected respectively with pushing up.Take top and drive control cabinet scram button, (total anxious the stopping of action said above, should no longer mention here) output can be realized: a) disconnect the input that enables that the DO module for power supply of PLC and amplifier are driven in top; B) disconnect the MCC power supply of driving on top; C) standby have an expansion interface, and convenient expansion is used.
With reference to Fig. 5, vertical tube drawbench exigency stop system 12 is realized based on safety relay two.The input of safety relay two suddenly stops interface (the total anxious output that stops safety relay of action) with vertical tube drawbench and the on-the-spot scram buttons of several vertical tube drawbenches are connected successively, and the output of safety relay two is connected respectively with DO module for power supply and amplifier, DI module and the spare extension interface of the PLC of vertical tube drawbench.Take the on-the-spot scram button of any one tube drawbench, output can be realized: the DI module that a) emergent stop signal is back to the PLC of vertical tube drawbench; B) disconnect the DO module for power supply of vertical tube drawbench PLC and amplifier and enable input; C) standby have an expansion interface, and convenient expansion is used.
With reference to Fig. 6, iron driller exigency stop system 13 is realized based on safety relay three.The input of safety relay three is connected successively with anxious interface (the total anxious output that stops safety relay of action), the on-the-spot scram button of iron driller, iron driller body scram button and the wireless receiver of stopping of iron driller; The output of safety relay three is connected respectively with DO module for power supply and amplifier, DI module and the spare extension interface of iron driller.Take iron driller on-the-spot scram button or iron driller body scram button or be positioned at the scram button (three is arbitrary) on Digiplex, the output of safety relay three can be realized: the DI module that a) emergent stop signal is back to the PLC of iron driller; B) the DO module for power supply of disconnection iron driller PLC and amplifier enable input; C) standby have an expansion interface, and convenient expansion is used.
With reference to Fig. 7, rotating disk exigency stop system 14 is realized based on safety relay four.The input of safety relay four is directly connected with the anxious interface (the total anxious output that stops safety relay of action) that stops of rotating disk; The output of safety relay four is connected respectively with rotary tray motor, DI module and spare extension interface.Take the total scram button of action, output can be realized: the DI module that a) emergent stop signal is back to the PLC of electric-control system; B) stop the work of rotary tray motor; C) standby have an expansion interface, and convenient expansion is used.
With reference to Fig. 8, well drilling hoist exigency stop system 15 is realized based on safety relay five.The input of safety relay five is directly connected with the anxious interface (the total anxious output that stops safety relay of action) that stops of well drilling hoist; DI module and the spare extension interface of the output Yu Pansha mechanism of safety relay five, the PLC of well drilling hoist electric-control system connect respectively.Take the total scram button of action, output can be realized: the DI module that a) emergent stop signal is back to the PLC of well drilling hoist electric-control system; B) disconnect the power supply of well drilling hoist motor; C) the related fluid pressing tongs of activation dish in stopping; D) standby have an expansion interface, and convenient expansion is used.
With reference to Fig. 9, dynamic catwalk exigency stop system 16 is realized based on safety relay six.The input of safety relay six is connected successively with anxious interface (the total anxious output that stops safety relay of action), the on-the-spot scram button (showing two in Fig. 9) of several dynamic catwalks and the wireless receiver of stopping of dynamic catwalk, and the output of safety relay six is connected respectively with DO module for power supply and amplifier, DI module and the spare extension interface of dynamic catwalk.Take the on-the-spot scram button of arbitrary dynamic catwalk or be positioned at the scram button on Digiplex, output can be realized: the DI module that a) emergent stop signal is back to the PLC of dynamic catwalk; B) the DO module for power supply of disconnection dynamic catwalk PLC and amplifier enable input; C) standby have an expansion interface, and convenient expansion is used.
With reference to Figure 10, slush pump exigency stop system 17 is realized based on safety relay seven.The input of safety relay seven is directly connected with mud sudden-stop of bump interface (the total anxious output that stops safety relay of action); The output of safety relay seven is connected respectively with DI module and the spare extension interface of the PLC of slush pump motor, slush pump electric-control system.Take the total scram button of action, output can be realized: the DI module that a) emergent stop signal is back to the PLC of slush pump electric-control system; B) stop the work of slush pump motor; C) standby have an expansion interface, and convenient expansion is used.
In above-mentioned subset exigency stop system, the input of safety relay and expansion module is connected with the total anxious output that stops safety relay of upper level by the scram button of this equipment, and output connects needs dead circuit.
Main driller moves scram button 5, deputy driller, and to move scram button 6, on-the-spot total scram button 7 are sane level relations, and arbitrary scram button of pressing in these three all can stop the action of all subsets.
Main driller's power scram button 9, deputy driller's power scram button 10 are sane level relations, and arbitrary emergency stop switch of pressing in these two all can stop power source.
When the total scram button of equipment and the total scram button of power all do not take, user can take the scram button of this subset for stopping the action of this subset, on the not impact of other subsets.
The concrete control procedure of system of the present invention is:
1) top drive, the control self-organizing system of vertical tube drawbench, iron driller, dynamic catwalk.In control system separately, safety relay is installed, input/output terminal connects according to the structure of Fig. 4, Fig. 5, Fig. 6, Fig. 9 respectively.
2) safety relay of rotating disk, well drilling hoist, slush pump is arranged in integrated control system, and input/output terminal connects according to the structure of Fig. 7, Fig. 8, Figure 10 respectively.
3) installation action safety relay and power safety relay in rig integrated control system, input/output terminal connects according to the structure of Fig. 2, Fig. 3.
The control principle of system of the present invention is:
1) exigency stop system of subset is realized based on safety relay and expansion module thereof: relay input is connected by the total anxious output that stops safety relay of equipment several scram buttons separately and the action that is positioned at integrated control system; Relay output end connects needs dead circuit.In the situation that the total scram button of action is not taken, the scram button of subset can stop the everything of this equipment, and on the not impact of other equipment.
2) action in integrated control system is total suddenly stops realizing based on safety relay: relay input is connected by being positioned at the action scram button of main driller's control station, the action scram button that is positioned at deputy driller's control station and on-the-spot total scram button; Relay output end is connected to the input of subset safety relay.Operating personnel all can stop the action of all devices by taking above-mentioned three arbitrary scram buttons.
3) power in integrated control system is total anxious stops also based on safety relay, realizing: input by being positioned at the power scram button of main driller's control station, the power scram button that is positioned at deputy driller's control station is connected; Output is controlled stopping of hydraulic motor and stopping of generator.Operating personnel stop the power source of all devices by taking above-mentioned arbitrary scram button.
Claims (10)
1. the urgency based on the integrated control of rig is stopped control system, its feature is: comprise anxious assembly (1) and the anxious assembly (2) that stops of integrated control system power of stopping of integrated control system action, the anxious assembly (1) that stops of integrated control system action is connected respectively with corresponding subset exigency stop system (3); Integrated control system power suddenly stops assembly (2) and is connected respectively with hydraulic motor (18) and generator (19).
2. the urgency based on the integrated control of rig according to claim 1 is stopped control system, its feature is: the anxious structure of stopping assembly (1) of described integrated control system action is, comprises that action safety relay (4), main driller move scram button (5), deputy driller and move scram button (6) and on-the-spot always scram button (7); Input and the main driller of action safety relay (4) moves scram button (5), deputy driller and moves scram button (6), on-the-spot total scram button (7) and connect successively, and the output of safety relay (4) of moving is connected with the corresponding interface of subset exigency stop system (3).
3. the urgency based on the integrated control of rig according to claim 1 is stopped control system, its feature is: the anxious structure of stopping assembly (2) of described integrated control system power is to comprise power safety relay (8), main driller's power scram button (9) and deputy driller's power scram button (10); The input of power safety relay (8) is connected with main driller's power scram button (9) and deputy driller's power emergency stop switch (10), and the output of power safety relay (8) stops with Hydraulic Station is anxious that interface and generator are anxious to stop interface and be connected respectively.
4. the urgency based on the integrated control of rig according to claim 1 is stopped control system, its feature is: described subset exigency stop system (3), comprises pushing up and drive exigency stop system (11), vertical tube drawbench exigency stop system (12), iron driller exigency stop system (13), rotating disk exigency stop system (14), well drilling hoist exigency stop system (15), dynamic catwalk exigency stop system (16), slush pump exigency stop system (17); The corresponding interface of subset exigency stop system (3) comprises that vertical tube drawbench is anxious and stops that interface, well drilling hoist are anxious stops that interface, rotating disk are anxious stops that interface, mud sudden-stop of bump interface, iron driller suddenly stop interface, anxious interface and the anxious interface that stops of dynamic catwalk of stopping is driven on top.
5. the urgency based on the integrated control of rig according to claim 4 is stopped control system, its feature is: described top is driven exigency stop system (11) and comprised safety relay one, the input of safety relay one and top are driven control cabinet scram button and top and are driven and suddenly stop interface and connect successively, and the output of safety relay one drives the MCC and the spare extension interface that the DO module of PLC and amplifier, top drive and is connected respectively with pushing up.
6. the urgency based on the integrated control of rig according to claim 4 is stopped control system, its feature is: described vertical tube drawbench exigency stop system (12) comprises safety relay two, the input of safety relay two suddenly stops interface with vertical tube drawbench and the on-the-spot scram button of several vertical tube drawbenches is connected successively, and the output of safety relay two is connected respectively with DO module for power supply and amplifier, DI module and the spare extension interface of the PLC of vertical tube drawbench.
7. the urgency based on the integrated control of rig according to claim 4 is stopped control system, its feature is: described iron driller exigency stop system (13) comprises safety relay three, and the input of safety relay three is connected successively with anxious interface, the on-the-spot scram button of iron driller, iron driller body scram button and the wireless receiver of stopping of iron driller; The output of safety relay three is connected respectively with DO module for power supply and amplifier, DI module and the spare extension interface of iron driller.
8. the urgency based on the integrated control of rig according to claim 4 is stopped control system, and its feature is: described rotating disk exigency stop system (14) comprises safety relay four, and the input of safety relay four and rotating disk suddenly stop interface direct and connect in succession; The output of safety relay four is connected respectively with rotary tray motor, DI module and spare extension interface.
9. the urgency based on the integrated control of rig according to claim 4 is stopped control system, and its feature is: described well drilling hoist exigency stop system (15) comprises safety relay five, and the input of safety relay five and well drilling hoist suddenly stop interface direct and connect in succession; DI module and the spare extension interface of the output Yu Pansha mechanism of safety relay five, the PLC of well drilling hoist electric-control system connect respectively.
10. the urgency based on the integrated control of rig according to claim 4 is stopped control system, its feature is: described dynamic catwalk exigency stop system (16) comprises safety relay six, the input of safety relay six is connected successively with anxious interface, the on-the-spot scram button of several dynamic catwalks and the wireless receiver of stopping of dynamic catwalk, and the output of safety relay six is connected respectively with DO module for power supply and amplifier, DI module and the spare extension interface of dynamic catwalk;
Described slush pump exigency stop system (17) comprises safety relay seven, and the input of safety relay seven and mud sudden-stop of bump interface direct connect in succession; The output of safety relay seven is connected respectively with DI module and the spare extension interface of the PLC of slush pump motor, slush pump electric-control system.
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| CN201310568165.4A CN103628858B (en) | 2013-11-13 | 2013-11-13 | A kind of urgency based on rig integrating control stops control system |
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| CN104533383A (en) * | 2014-12-18 | 2015-04-22 | 宝鸡石油机械有限责任公司 | Local and remote control panel of soft starter of hydraulic pressure station |
| CN106338963A (en) * | 2016-09-12 | 2017-01-18 | 株洲中车时代装备技术有限公司 | Sudden stop protection control method of multiple-console electronic control system |
| CN107269260A (en) * | 2017-05-11 | 2017-10-20 | 宝鸡石油机械有限责任公司 | The integrated operation control terminal of the double drillers of oil-well rig being mutually redundant |
| CN107562005A (en) * | 2017-08-08 | 2018-01-09 | 中曼石油天然气集团股份有限公司 | A kind of oil-well rig cat track control unit and its control method |
| CN107918302A (en) * | 2017-11-22 | 2018-04-17 | 宝鸡石油机械有限责任公司 | A kind of emergency stop control system and control method with multiple protective mechanism |
| CN109356563A (en) * | 2018-12-18 | 2019-02-19 | 中石化四机石油机械有限公司 | Automated drilling rig integrated security protects system and control logic |
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| CN107269260A (en) * | 2017-05-11 | 2017-10-20 | 宝鸡石油机械有限责任公司 | The integrated operation control terminal of the double drillers of oil-well rig being mutually redundant |
| CN107562005A (en) * | 2017-08-08 | 2018-01-09 | 中曼石油天然气集团股份有限公司 | A kind of oil-well rig cat track control unit and its control method |
| CN107562005B (en) * | 2017-08-08 | 2020-06-05 | 中曼石油天然气集团股份有限公司 | Petroleum drilling machine catwalk controller and control method thereof |
| CN107918302A (en) * | 2017-11-22 | 2018-04-17 | 宝鸡石油机械有限责任公司 | A kind of emergency stop control system and control method with multiple protective mechanism |
| CN107918302B (en) * | 2017-11-22 | 2019-09-24 | 宝鸡石油机械有限责任公司 | A kind of emergency stop control system and control method with multiple protective mechanism |
| CN109356563A (en) * | 2018-12-18 | 2019-02-19 | 中石化四机石油机械有限公司 | Automated drilling rig integrated security protects system and control logic |
| CN109356563B (en) * | 2018-12-18 | 2022-03-18 | 中石化四机石油机械有限公司 | Integrated safety protection system and control logic for automatic drilling machine |
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Effective date of registration: 20210113 Address after: 721002 No.2 Dongfeng Road, Jintai District, Baoji City, Shaanxi Province Patentee after: Baoji Oilfield Machinery Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC national oil and gas drilling equipment Engineering Technology Research Center Co., Ltd Address before: 721002 No. 2 Dongfeng Road, Shaanxi, Baoji Patentee before: Baoji Oilfield Machinery Co.,Ltd. |