7000m RT-independent-electric-driven rig

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On the basis of common mechanical rig, driving of RT and DW is separated, and RT is driven by an independent AC VF motor. RT rev, torque and mud pump stroke can be adjusted separately as per drilling technology, which provides precondition and guarantee for drilling technology optimization and auto-bit-feeding realization.

RT and auto-bit-feeding both adopt all-digital auto control technique, which make the performance of the rig under drilling condition get close to digital-control electric VF rig; driller operates the touch screen to fulfill drilling operation through optimized drilling parameters, which will reduce labor intensity significantly and improve work efficiency. Display, restoration, regulation and control, remote management of major drilling parameters can be realized.

Nominal drilling depth	7000m（114mmDP）		Quantity and power of drilling pump	2×1600hp
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	6000m（127mmDP）		Substructure type	Block package type	Swing up type
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Max hook load	4500kN		Substructure height and clear height under RT beam	9m，7m	10.5m，9m
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Wire rope system of traveling system	6x7，parallel		Mast type and effective height	K type，45m
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DW rated power	1470kW（2000hp）		Transmission mode	hydraulic transmission and chain paralleling+AC-VFD-AC
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DW gear	4gears 4forward+2reverse	6gears 6forward+2reverse	Quantity/power of main diesel engine	3x810kw
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Diameter of drilling wire rope	φ38mm		Quantity and power of auxiliary generator set	3×400kW
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RT opening diameter	950mm（37 1/2″）		Quantity and power of AC motor	1×600kW+1x45 kW
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RT gear	1gear	2gears	HP mud manifold	φ102mm（bore diameter）×35MPa
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			Effective mud volume of solid control system	430m³