CN205047149U - 2000 digital coal bed gas rig of rice - Google Patents
2000 digital coal bed gas rig of rice Download PDFInfo
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- CN205047149U CN205047149U CN201520668770.3U CN201520668770U CN205047149U CN 205047149 U CN205047149 U CN 205047149U CN 201520668770 U CN201520668770 U CN 201520668770U CN 205047149 U CN205047149 U CN 205047149U
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- 238000005553 drilling Methods 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims abstract description 7
- 230000007246 mechanism Effects 0.000 claims description 22
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- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 238000003745 diagnosis Methods 0.000 claims description 3
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- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000011161 development Methods 0.000 abstract description 6
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- 238000010586 diagram Methods 0.000 description 2
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- 239000000203 mixture Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000012384 transportation and delivery Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004459 forage Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
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- 230000003993 interaction Effects 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Abstract
The utility model provides a 2000 digital coal bed gas rig of rice, it include the wagon drill, certainly move linkage, mast derrick operating system, can stick up top -drive, hydraulic pressure tong, hydraulic pressure slips and control room. Be provided with in the control room and control the host computer, the wagon drill, from moving the linkage, mast derrick operating system, can stick up top -drive, be provided with on -the -spot sensor in hydraulic pressure tong and the hydraulic pressure slips, be provided with PLC in the host computer, PLC is connected with on -the -spot each sensor, compare current drilling equipment, this coal bed gas rig combines coal bed gas probing development production technology characteristics, integrated advanced manufacturing technology, information acquisition technique and on -line control technique, constitute the machine, , liquid and the integrated digital coal bed gas rig of information, the operand wordization is crept into in the realization, play drilling tool the job action digitization down, data management is digital.
Description
Technical field
The utility model relates to mining equipment, specifically a kind of 2000 meters of digitlization coal bed gas drilling machines.
Background technology
The reserves of China's coal bed gas are very abundant, exploited utilization not yet in a large number so far.When China's energy-consuming breach is huge, coal bed gas will be extremely important and real strategy alternatives resource as Unconventional forage.The new industry of national strategy has been listed in the exploitation of coal bed gas in.Accelerate CBM exploration and development, to guarantee Safety of Coal Mine Production, increase clean energy resource supply, promote energy-saving and emission-reduction, to reduce greenhouse gas emission significant.But China's cbm development utilizes the research and development of equipment to start late, and has become the bottleneck that cbm development utilizes, improve the production domesticization level that cbm development utilizes equipment, that research and develop suitable for China as early as possible, advanced in performance coal bed gas drilling machine is imperative.
The field operation scene of current coal bed gas drilling machine is so substantially: operator is lower in the open no matter scorching summer and freezing winter is exposed to the weather and drenched with rain, and handle operates by doing and illustrating; Work data passes through the meter reading of hydraulic pressure or flow, then calculates conversion, intuitively not inaccurate, can not store and export; In drilling operation course, rise, lower drilling rod operation accounts for more than 60% of rig amount of work, rise at present, lower drilling rod operation is all the semi-mechanization operating type adopting manpower to draw not only but also drag substantially, time-consuming, effort and potential safety hazard is many, the rising of hundreds of root drilling rod, under, connect, operation repeats, loaded down with trivial details, easily tired, if operation error, then accident can be caused.
Summary of the invention
For solving the technical problem of above-mentioned existence, the utility model provides a kind of 2000 meters of digitlization coal bed gas drilling machines, in conjunction with coal bed gas probing Development and Production technical characterstic, integrated advanced manufacturing technology, information acquiring technology and On-line Control technology, form the digitlization coal bed gas drilling machine of mechanical, electrical, liquid and information integral.Realize drilling operation digitlization, the digitlization of drilling Job Operations, data management digitlization.
To achieve the above object of the invention, the technical scheme that the utility model adopts is:
A kind of 2000 meters of digitlization coal bed gas drilling machines, it comprises wagon drill, automatically pipe-rod changing mechanism, mast derrick jacking system, can stick up top-drive, hydraulic tongs, hydraulic pressure pipe slips and control room, manipulation main frame is provided with in control room, wagon drill, automatically pipe-rod changing mechanism, mast derrick jacking system, can stick up in top-drive, hydraulic tongs and hydraulic pressure pipe slips and be provided with spot sensor, be provided with PLC in main frame, PLC is connected with each sensor in scene.
The control system of these 2000 meters of digitlization coal bed gas drilling machines comprises program controlled automatic and changes lever system and program controlled automatic drilling system:
Program controlled automatic changes lever system and is made up of hydraulically powered automatic pipe-rod changing mechanism, mast derrick jacking system, the top-drive that can stick up, hydraulic tongs, hydraulic pressure pipe slips and PLC, electro-hydraulic proportional valve, spot sensor, operating host etc., mast derrick jacking system comprises derrick, the top-drive that can stick up can move up and down along derrick, PLC is connected by the executing agency of electro-hydraulic proportional valve with automatic pipe-rod changing mechanism, mast derrick jacking system, top-drive, hydraulic tongs and hydraulic pressure pipe slips, and spot sensor is connected with operating host.
The omnidistance mechanical action that using PLC controls the drilling operation making rig from ground to down-hole runs automatically by the program set, and realizes drilling well drilling complete operation automation, programme-controlled.
Program controlled automatic pipe-rod changing mechanism control principle: be that control core performs according to changing the sequential control of bar motion flow with PLC.After operator presses the operation button, instruction is sent to PLC, PLC performs first step action, driving electromagnetic valve to promote oil cylinder makes V-type frame overturn, after the upset of V-type frame puts in place, the proximity switch that puts in place returns to PLC signal that puts in place, and PLC confirms that the first step completes after receiving bit instruction, then sends instruction and enters follow-up corresponding action.So; each step instruction has sensor feedback to PLC; the situation if centre meets accident; make PLC in setting-up time, not receive corresponding feedback signal; then PLC can think the concurrent position alarm of being out of order of equipment generation unusual condition, and it is pending that PLC can select alarm still to shut down etc. according to fault type automatically.Personnel to be operated press recovery button after getting rid of exception, and PLC can enter self-inspection state, as Abnormality remove then can enter follow-up workflow at former abnormal failure place, proceeds.
Hydraulically powered automatic pipe-rod changing mechanism and top-drive, hydraulic tongs, hydraulic pressure pipe slips and the mast derrick lifting system compounding practice that can stick up use.
Program controlled automatic drilling system is made up of electro-hydraulic proportional system and electrical control system.
Electrical control system is integrated by PLC, operating host, real-time video monitoring system, fault diagnosis system, electric proportional control handle, knob and electric-controlled switch.
The electric control theory that program controlled automatic creeps into: operating personnel are inputted the drilling parameter such as rotating speed, moment of torsion by operating host touch-screen, data are sent to PLC logic controller by bus by touch-screen; These data are sent in electro-hydraulic proportional valve with the form of analog quantity by digital-to-analogue conversion and other process by PLC; Electro-hydraulic proportional valve drives the executing agency such as oil cylinder or motor to complete the action of setting.Like this, just achieve rig to run by input parameter.
Simultaneously, the sensor collecting work signal at electro-hydraulic proportional valve and place of each executing agency, in real time operating state is fed back to PLC through drive plate, the signal received is converted to valid data through data processing by controller, be uploaded to operating host, operating host shows data result by display unit, and data is deposited in the storage device.
Electro-hydraulic proportional control system is integrated by electromagnetic proportion relief valve, load-reacting pump controller and solenoid-operated proportional direction of the traffic valve.
Electro-hydraulic proportional control system: native system adopts two groups of duplex load-reacting plunger displacement pumps to be respectively feed cylinder and unit head fluid motor fuel feeding; Speed of rising and falling, the pressure of the rotating speed of fluid motor, moment of torsion and oil cylinder are controlled by the rate of discharge of two load-reacting plunger displacement pumps respectively.The pressure size of the electric signal regulating load sensitive variable pump controller mouth that electromagnetic proportion relief valve inputs according to PLC, thus regulate delivery side of pump flow, and then control motor rotary speed, moment of torsion and oil cylinder and to rise and fall speed, pressure; Solenoid-operated proportional direction of the traffic valve controls rotating and the rotating speed of motor according to the size and Orientation of electric signal of the PLC input of input simultaneously, and another solenoid-operated proportional direction of the traffic valve controls the advance of oil cylinder and retrogressing and speed according to the size and Orientation of the electric signal of the PLC input of input simultaneously.In the process of creeping into, the size according to the electric signal of PLC input carries out regulable control by electromagnetic proportion relief valve and solenoid-operated proportional direction of the traffic valve to rod rotation speed and oil cylinder propelling pressure, realizes the operation controlling rig by the parameter signal of input.
Main frame is also provided with touching display screen, memory is connected with PLC in manipulation, and manipulation main frame is also provided with output port and is connected with printing device.
Automatic pipe-rod changing mechanism, top-drive and well head place are also provided with camera, and control indoor host computer is put in real-time pictures transmission, carry out real-time video monitoring to working condition.
The beneficial effects of the utility model are:
1, drilling process digital manipulation is realized
This control system of rig has touch-screen and enters the operating instructions and memory function, can input the technological parameters such as the pressure of the drill of the optimization of setting and rotating speed, and rig performs well-digging task by the parameter of setting automatically.
2, realize, lower drilling rod operand word.
This rig is applied in PLC (programmable logic controller) in the process of upper drilling rod and lower drilling rod, rig can be run automatically according to the program set, realizing from ground to down-hole, programme-controlled, the automation of whole process of lower drilling rod operation, greatly improve rig operating efficiency;
3, data management digitlization is realized.
The technological parameter data that situ of drilling well performs realize collection in worksite, focus on display, centralized Control operation, and the omnidistance storage of operating data, can export printing;
4, this rig application network technology, is transferred to backstage command centre the operation information at scene, realizes remote monitoring, treasure is disconnected, expert commands, controls;
5, this rig configures the driller house operating room of airtight air-conditioning, and operator is monitored outside handling situations in real time by display, and by man-machine interaction device, touch-screen input is carried out operation and controlled, and is kept in touch by network and backstage command centre.Greatly improve working conditions.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
The automatic pipe-rod changing mechanism structural representation of Fig. 2;
Fig. 3 program controlled automatic changes lever system theory diagram;
Fig. 4 program controlled automatic drilling system theory diagram;
Fig. 5 is electro-hydraulic proportional control system figure.
Detailed description of the invention
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Embodiment described in following exemplary embodiment does not represent all embodiments consistent with the utility model.On the contrary, they only with as in appended claims describe in detail, the example of device that aspects more of the present utility model are consistent.
PLC described in literary composition is called for short PLC, and Drill-pipe conveyed frame 12 also claims V-type frame.
The 2000 meters of digitlization coal bed gas drilling machines of one as shown in Figure 1, it comprises wagon drill 1, automatically pipe-rod changing mechanism 2, mast derrick jacking system 3, can stick up top-drive 4, hydraulic tongs 5, hydraulic pressure pipe slips 6 and control room 7.Manipulation main frame is provided with in control room, wagon drill 1, automatically pipe-rod changing mechanism 2, mast derrick jacking system 3, can stick up on top-drive 4, hydraulic tongs 5, hydraulic pressure pipe slips 6 and be provided with spot sensor, be provided with PLC in main frame, PLC is connected with each sensor in scene.
The control system of these 2000 meters of digitlization coal bed gas drilling machines comprises program controlled automatic and changes lever system and program controlled automatic drilling system:
Program controlled automatic changes lever system by hydraulically powered automatic pipe-rod changing mechanism 2, mast derrick jacking system 3, the top-drive 4 that can stick up, hydraulic tongs 5, hydraulic pressure pipe slips 6 and PLC, electro-hydraulic proportional valve, spot sensor, the compositions such as operating host, mast derrick jacking system 3 comprises derrick, the top-drive 4 that can stick up can move up and down along derrick, PLC is by electro-hydraulic proportional valve and automatic pipe-rod changing mechanism 2, mast derrick jacking system 3, the top-drive 4 that can stick up, hydraulic tongs 5, the executing agency of hydraulic pressure pipe slips 6 connects, spot sensor is connected with the PLC in operating host.
Hydraulically powered automatic pipe-rod changing mechanism 2 uses with top-drive 4, hydraulic tongs 5 hydraulic pressure pipe slips 6 and mast derrick lifting system 3 compounding practice that can stick up.
Program controlled automatic pipe-rod changing mechanism control principle as shown in Figure 3: be that control core performs according to changing the sequential control of bar motion flow with PLC.After operator presses the operation button, instruction is sent to PLC, PLC performs first step action, driving electromagnetic valve to promote oil cylinder makes V-type frame overturn, after the upset of V-type frame puts in place, the proximity switch that puts in place returns to PLC signal that puts in place, and PLC confirms that the first step completes after receiving bit instruction, then sends instruction and enters follow-up corresponding action.So; each step instruction has sensor feedback to PLC; the situation if centre meets accident; make PLC in setting-up time, not receive corresponding feedback signal; then PLC can think the concurrent position alarm of being out of order of equipment generation unusual condition, and it is pending that PLC can select alarm still to shut down etc. according to fault type automatically.Personnel to be operated press recovery button after getting rid of exception, and PLC can enter self-inspection state, as Abnormality remove then can enter follow-up workflow at former abnormal failure place, proceeds.
Program controlled automatic drilling system is made up of electro-hydraulic proportional system and electrical control system.
Electrical control system is by PLC, and operating host, real-time video monitoring system, fault diagnosis system, electric proportional control handle, knob and electric-controlled switch are integrated.
The electric control theory that program controlled automatic as shown in Figure 4 creeps into: operating personnel are inputted the drilling parameter such as rotating speed, moment of torsion by operating host touch-screen, data are sent to PLC logic controller by bus by touch-screen; These data are sent in electro-hydraulic proportional valve with the form of analog quantity by digital-to-analogue conversion and other process by PLC; Electro-hydraulic proportional valve drives the executing agency such as oil cylinder or motor to complete the action of setting.Like this, just achieve rig to run by input parameter, simultaneously, the sensor collecting work signal at electro-hydraulic proportional valve and place of executing agency, in real time operating state is fed back to PLC through drive plate, the signal received is converted to valid data through data processing by controller, is uploaded to operating host, operating host shows data result by display unit, and data is deposited in the storage device.
Electro-hydraulic proportional control system is integrated by electromagnetic proportion relief valve, load-reacting pump controller and solenoid-operated proportional direction of the traffic valve.
As shown in Figure 5, native system adopts two groups of duplex load-reacting plunger displacement pumps to be respectively feed cylinder and unit head fluid motor fuel feeding to electro-hydraulic proportional control system; Speed of rising and falling, the pressure of the rotating speed of fluid motor, moment of torsion and oil cylinder are controlled by the rate of discharge of two load-reacting plunger displacement pumps respectively.The pressure size of the electric signal regulating load sensitive variable pump controller mouth that electromagnetic proportion relief valve inputs according to PLC, thus regulate delivery side of pump flow, and then control motor rotary speed, moment of torsion and oil cylinder and to rise and fall speed, pressure; Solenoid-operated proportional direction of the traffic valve controls rotating and the rotating speed of motor according to the size and Orientation of electric signal of the PLC input of input simultaneously, and another solenoid-operated proportional direction of the traffic valve controls the advance of oil cylinder and retrogressing and speed according to the size and Orientation of the electric signal of the PLC input of input simultaneously.In the process of creeping into, the size according to the electric signal of PLC input carries out regulable control by electromagnetic proportion relief valve and solenoid-operated proportional direction of the traffic valve to rod rotation speed and oil cylinder propelling pressure, realizes the operation controlling rig by the parameter signal of input.
Main frame is also provided with touching display screen, memory is connected with PLC in manipulation, and manipulation main frame is also provided with output port and is connected with printing device.
Automatic pipe-rod changing mechanism, top-drive and well head place are also provided with camera, in real time picture are sent to control indoor host computer, carry out real-time video monitoring to job site working condition.
Automatic pipe-rod changing mechanism 2(Fig. 2) comprise lower vehicle frame 9, lifting frame 11, drill rod rack 13 and Drill-pipe conveyed frame (V-type frame) 12.Drill-pipe conveyed frame (V-type frame) 12 is arranged on lifting frame 11, can along the rail moving on lifting frame 11.Drilling rod rolls into Drill-pipe conveyed frame (V-type frame) 12 by drill rod rack 13, lifting frame 11 one end and lower vehicle frame 9 hinged, the other end lifts by hydraulic cylinder, lifting frame 12 and the top-drive 4 that can stick up with the use of, complete the task of drilling rod being served (or under) rig floor.
Above-described the utility model embodiment, does not form the restriction to the utility model protection domain.Any do within spirit of the present utility model and principle amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. 2000 meters of digitlization coal bed gas drilling machines, it is characterized in that: it comprises wagon drill, automatically pipe-rod changing mechanism, mast derrick jacking system, can stick up top-drive, hydraulic tongs, hydraulic pressure pipe slips and control room, manipulation main frame is provided with in control room, wagon drill, automatically pipe-rod changing mechanism, mast derrick jacking system, can stick up in top-drive, hydraulic tongs and hydraulic pressure pipe slips and be provided with spot sensor, be provided with PLC in main frame, PLC is connected with each sensor in scene.
2. 2000 meters of digitlization coal bed gas drilling machines according to claim 1, is characterized in that: its control system comprises program controlled automatic and changes lever system and program controlled automatic drilling system:
Program controlled automatic changes lever system and is made up of hydraulically powered automatic pipe-rod changing mechanism, mast derrick jacking system, the top-drive that can stick up, hydraulic tongs, hydraulic pressure pipe slips and PLC, electro-hydraulic proportional valve, spot sensor, operating host etc., mast derrick jacking system comprises derrick, the top-drive that can stick up can move up and down along derrick, PLC is connected by the executing agency of electro-hydraulic proportional valve with automatic pipe-rod changing mechanism, mast derrick jacking system, top-drive, hydraulic tongs and hydraulic pressure pipe slips, and spot sensor is connected with operating host;
Program controlled automatic drilling system is made up of electro-hydraulic proportional system and electrical control system: electrical control system is integrated by PLC, operating host, real-time video monitoring system, fault diagnosis system, electric proportional control handle, knob and electric-controlled switch;
Electro-hydraulic proportional control system is integrated by electromagnetic proportion relief valve, load-reacting pump controller and solenoid-operated proportional direction of the traffic valve.
3. 2000 meters of digitlization coal bed gas drilling machines according to claim 2, is characterized in that: data are sent to PLC logic controller by bus by the touch-screen of electrical control system operating host; These data are sent in electro-hydraulic proportional valve with the form of analog quantity by digital-to-analogue conversion and other process by PLC; Electro-hydraulic proportional valve drives the action of the executing agency such as oil cylinder or motor; The sensor collecting work signal at electro-hydraulic proportional valve and place of each executing agency, in real time operating state is fed back to PLC through drive plate, the signal received is converted to valid data through data processing by controller, be uploaded to operating host, operating host shows data result by display unit, and data is deposited in the storage device.
4. 2000 meters of digitlization coal bed gas drilling machines according to claim 2, is characterized in that: electro-hydraulic proportional control system adopts two groups of duplex load-reacting plunger displacement pumps to be respectively feed cylinder and unit head fluid motor fuel feeding; The pressure size of the electric signal regulating load sensitive variable pump controller mouth that electromagnetic proportion relief valve inputs according to PLC, solenoid-operated proportional direction of the traffic valve controls rotating and the rotating speed of motor according to the size and Orientation of electric signal of the PLC input of input simultaneously, and another solenoid-operated proportional direction of the traffic valve controls the advance of oil cylinder and retrogressing and speed according to the size and Orientation of the electric signal of the PLC input of input simultaneously.
5. 2000 meters of digitlization coal bed gas drilling machines according to claim 1, is characterized in that: main frame is also provided with touching display screen, memory is connected with PLC in manipulation, and manipulation main frame is also provided with output port and is connected with printing device.
6. 2000 meters of digitlization coal bed gas drilling machines according to claim 1, is characterized in that: pipe-rod changing mechanism, top-drive and well head place are also provided with camera automatically.
7. 2000 meters of digitlization coal bed gas drilling machines according to claim 1, it is characterized in that: pipe-rod changing mechanism comprises lower vehicle frame, lifting frame, drill rod rack and Drill-pipe conveyed frame automatically, Drill-pipe conveyed frame is arranged on lifting frame, can along the rail moving on lifting frame, drilling rod rolls into Drill-pipe conveyed frame by drill rod rack, lifting frame one end and lower vehicle frame hinged, the other end lifts by hydraulic cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520668770.3U CN205047149U (en) | 2015-09-01 | 2015-09-01 | 2000 digital coal bed gas rig of rice |
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| CN201520668770.3U CN205047149U (en) | 2015-09-01 | 2015-09-01 | 2000 digital coal bed gas rig of rice |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107956433A (en) * | 2017-12-21 | 2018-04-24 | 徐工集团工程机械有限公司 | Drilling machine, which is used, unloads lever apparatus and drilling machine |
| CN107975340A (en) * | 2017-12-06 | 2018-05-01 | 郑州神利达钻采设备有限公司 | A kind of big drilling machine of application range and its application method |
| CN109339702A (en) * | 2018-11-09 | 2019-02-15 | 山东中天泰和实业有限公司 | A kind of digital multifunctional mounted drilling rig |
| RU2800108C1 (en) * | 2022-06-24 | 2023-07-18 | Общество с ограниченной ответственностью Компания "Объединенная Энергия" | Automated rod addition system |
-
2015
- 2015-09-01 CN CN201520668770.3U patent/CN205047149U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975340A (en) * | 2017-12-06 | 2018-05-01 | 郑州神利达钻采设备有限公司 | A kind of big drilling machine of application range and its application method |
| CN107956433A (en) * | 2017-12-21 | 2018-04-24 | 徐工集团工程机械有限公司 | Drilling machine, which is used, unloads lever apparatus and drilling machine |
| CN107956433B (en) * | 2017-12-21 | 2024-04-30 | 江苏徐工工程机械研究院有限公司 | Rod loading and unloading device for drilling machine and drilling machine |
| CN109339702A (en) * | 2018-11-09 | 2019-02-15 | 山东中天泰和实业有限公司 | A kind of digital multifunctional mounted drilling rig |
| CN109339702B (en) * | 2018-11-09 | 2023-10-27 | 山东中天泰和实业有限公司 | Digital multifunctional vehicle-mounted drilling and repairing machine |
| RU2800108C1 (en) * | 2022-06-24 | 2023-07-18 | Общество с ограниченной ответственностью Компания "Объединенная Энергия" | Automated rod addition system |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: 2000 digital coal bed gas rig of rice Effective date of registration: 20190524 Granted publication date: 20160224 Pledgee: Bank of Tai'an Limited by Share Ltd. Pledgor: SHANDONG ZHONGTIANTAIHE INDUSTRIAL Co.,Ltd. Registration number: 2019370000114 |
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Date of cancellation: 20200522 Granted publication date: 20160224 Pledgee: Bank of Tai'an Limited by Share Ltd. Pledgor: SHANDONG ZHONGTIANTAIHE INDUSTRIAL Co.,Ltd. Registration number: 2019370000114 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: 2000 digital coal bed gas rig of rice Effective date of registration: 20200527 Granted publication date: 20160224 Pledgee: Bank of Tai'an Limited by Share Ltd. Pledgor: SHANDONG ZHONGTIANTAIHE INDUSTRIAL Co.,Ltd. Registration number: Y2020980002494 |
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