5000m RT-independent-electric-driven rig

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On the basis of common mechanical rig, driving of RT a is separated from mud pump and DW, 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.

RT rev adjusting and DW 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	3500~5000m（114mmDP）		Quantity and power of drilling pump	2×1600hp
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	2800~4500m（127mmDP）		Substructure type	Block package type
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Max hook load	3150kN		Substructure height and clear height under RT beam	9m/7.62m
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Wire rope system of traveling system	6x7，parallel		Mast type and effective height	K type，44.5m
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DW rated power	1100kW（1500hp）		Transmission mode	hydraulic transmission and chain paralleling+AC-VFD-AC
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DW gear	4forward	6forward	Quantity/power of main diesel engine	3x810 kW
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Diameter of drilling wire rope	φ35mm		Quantity and power of auxiliary generator set	3×400kW
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RT opening diameter	952.5mm（ 37 1/2 ″）		Quantity and power of VF motor	1×600kW+1x45 kW
	698.5mm（ 27 1/2 ″）
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RT gear	1 gear	2 gears	HP mud manifold	φ102mm（bore diameter）×35MPa
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			Effective mud volume of solid control system	320m³