7000m digital control VF electric rig

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The rig is designed integrated with mechanical, electric, hydraulic, pneumatic and digital control. It takes fully the advantages of digital control, AC VF electric transmission. So its mechanical structure has been simplified.

Electric transmission uses a vector VF drive system; fully digitalized operation and control are realized, automatic and intelligent operation and control functions as well. The control data and drilling data can be acquired (signal) , displayed, stored, printed, controlled and managed remotely. The effective control for WOB, bit speed, pump pressure and pump displacement in large range and high precision can be easily realized, thus improving drilling technology. The VF technology used makes Max. DW output torque at zero rotation speed to ensure the suspending function of rig hoisting system, which completely replaces traditional driller's operation mode. PLC redundancy design of double circuit as spare parts each other is adopted for operation control system, improving system reliability.

Integrated driller's cabin makes the driller fulfill the main operation of drill rig in the cabin.

Cooperated with drill floor skidding system, realizing well drilling and workover operation at multi-wellhead.

Nominal drilling depth	7000m （114mm DP） 6000m （127mm DP）	Derrick type and effective height	K Type， 45m Derrick type， 46m
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Max. hook load	4500kN	/	/
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Wire rope system of traveling system	6×7 ，parallel	Qty. /power of drilling pump	3× 1600 hp pump
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DW rated power	1470kW （ 2000hp ）	Transmission mode	AC-VFD-AC
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DW gears	One gear, stepless speed regulation	RT gears	One gear, stepless speed regulation 2 gears, stepless speed regulation
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Diameter of drilling line	φ38mm	RT opening diameter	950mm （ 37-1/2″ ）