4000m DC electric trailer rig

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It adopts integrated design of mechanical, electrical and digital , its major functions realize digital control, and it possesses elementary functions of automation, intelligence and information . Structure design of rig components adopts advanced and proven technology from China and Overseas, which has advantages of reliable operation, convenient transportation and economic running to meet HSE requirements .

Major modules of the rig equip trailer device to meet the requirement of fast transportation.

Driving of RT, DW and mud pump is independent, 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, so drilling operation can be done 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	2500~4000m（114mmDP）	Substructure type	slingshot type
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	2000~3200m（127mmDP）	Substructure height and clear height under RT beam	7.5m，6.26m
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Max hook load	2250kN	Mast type and effective height	K type，43m
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Wire rope system of traveling system	5×6，parallel	Transmission mode	AC-SCR-DC,one-on-one mode
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DW rated power	800kW	Quantity and power of main generator set	3×1200kw
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DW gear	4 forward+4 reverse	Quantity and power of auxiliary generator set	1x300kw
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Diameter of drilling wire rope	φ32mm	Quantity and power of main motor	4×800kW（DC motor）+1×45kw（AC VF motor）
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RT opening diameter	698.5mm（27 1/2″）	HP mud manifold	Φ103mm（bore diameter）×35MPa
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RT gear	2forward+2reverse	Effective mud volume of solid control system	260m³
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Quantity and power of drilling pump	2×1000hp