5000m digital-control VF electric rig

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It adopts integrated design of mechanical, electrical, hydraulic, pneumatic and digital control, utilizes fully the advantages of advanced digital control AC VF electric transmission, and simplifies its mechanical structure.

As adopting of slingshot type substructure, drill floor equipments and driller cabin etc realize low-position installation and integer lifting.

Electric transmission adopts vector VF drive system to realize all digital operation and control, and also processes elementary functions of automation, intelligence and information to realize collection (signal), display, restoration, printing, remote monitoring and management of control and drilling parameters.

By the use of VF technology, DW realizes max torque output when its speed is zero to ensure the suspension function of rig lifting system, which change traditional driller operation mode completely.

This rig is equipped with an integral driller's cabin, in which a driller can finish major operations.

Nominal drilling depth	3500~5000m（114mmDP）	Quantity and power of drilling pump	2×1600hp
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	2800~4500m（127mmDP）	Substructure type	slingshot type
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Max hook load	3150kN	Substructure height and clear height under RT beam	9m，7.6m
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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	1100kW（1500hp）	Transmission mode	AC-DC-AC，one-on-one control
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DW gear	One gear stepless speed regulation	Quantity/power of main diesel engine	3x1087 kW
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Diameter of drilling wire rope	φ35mm	Quantity and power of auxiliary generator set	1×300kW
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RT opening diameter	952.5mm（37 1/2″）	Quantity and power of VF motor	3×600kW+1x45
	698.5mm（27 1/2″）		kW+2×1200 kW
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RT gear	One gear stepless speed regulation	HP mud manifold	φ102mm（bore diameter）×35MPa
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		Effective mud volume of solid control system	320m³