Electric Drive Rig

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Product Description

The drilling rig is powered by a diesel generator. The AC power from several diesel generators controls and drives drawwork, mud pumps,rotary table drive motors, motor-driven drawwork, mud pumps and rotary tables via SCR or VFD systems. Drilling rig adopts K type derrick, low installation, overall release; base with parallelogram structure, low installation, use drawwork tension to rise in place; Drawwork main brake using hydraulic disc brakes, auxiliary brake for electromagnetic eddy current brake or Eaton brake; VFD drive of the rig drawwork, auxiliary brake can use energy braking; drive turntable motor through two gearbox drive rotary table.

Electric drive rig performance characteristics:
1.Basic parameters in line with industry standards and regulations, the main components manufactured in line with the relevant norms;
2.SCR and VFD speed control system and digital control technology to flexibly adjust the drawwork lifting speed, rotary table speed and mud pump stroke to improve the working performance and power utilization of drawwork, rotary table and mud pump;
3.The traveling block position to achieve closed-loop control; auxiliary drive to achieve automatic drilling and emergency drive;
4.K-type derrick, low installation, the overall release, the top drive drilling device can be installed;
5.Parallelogram overall lifting base (some other types), can be table equipment and derrick low installation, relying on drawwork power overall rise in place;
6.Drawwork main brake using hydraulic disc brakes, braking torque, sensitive and reliable, auxiliary brake using electromagnetic eddy current brake or Eaton brake or energy consumption brake
7.Rotary table independent drive to simplify the transmission chain, quick installation and adjustment; also available through the drawwork power driven rotary table.

Main technical parameters:

Model		ZJ30/1700DB	ZJ40/2250DB	ZJ50/3150D	ZJ50/3150DB	ZJ70/4500D	ZJ70/4500DB
Drilling depth（114mm pipe）m		1600～3000	2500～4000	3800～5000	3800～5000	4500～7000	4500～7000
Max.load kN		1700	2250	3150	3150	3150	4500
Drilling line system		10	10	12	12	12	12
Dia. line mm(in)		29(1¹/8)	32(1¹/4)	35(1³/8)	35(1³/8)	38(1¹/2)	38(1¹/2)
Load fast line kN		210	280	350	350	485	485
Drawwork	model	JC30DB	JC40DB	JC50D	JC50DB	JC70D	JC70DB
	Rated power kW	550	735	1100	1100	1470	1470
	Shift	I,Continuously variable speed	I,Continuously variable speed	IV,Continuously variable speed	I,Continuously variable speed	IV,Continuously variable speed	I,Continuously variable speed
	Main brake	Hydraulic disc brake
	Auxiliary brake	Electromagnetic brake or Eaton brake
Crown block		TC170	TC225	TC315	TC315	TC450	TC450
Traveling block		YC225	YC225	YC315	YC315	YC450	YC450
Hook		DG225	DG225	DG315	DG315	DG450	DG450
Swivel	Model	SL225-II	SL225-II	SL450-II
Swivel	Dia. Center hole mm	75
Rotary table	Model	ZP520 or ZP275		ZP375
	Center hole mm(in)	520.7(20½) or 698.5(27½)		952.5(37½)
	Shift	II，Continuously variable speed	II，Continuously variable speed	II，Continuously variable speed	1，Continuously variable speed	II，Continuously variable speed	1，Continuously variable speed
Mud pump	Model X set	F-1300×2	F-1300×2	F-1600×2	F-1600×2	F-1600×3	F-1600×3
	Unit power KW(hp)	960(1300)	960(1300)	1180(1600)	1180(1600)	1180(1600)	1180(1600)
	Drive type	Motor
Derrick	Type	K
Derrick	Height	41.5	41.5	43	43	45	45
Height substructure m		7.5	7.5	9	9	9,10.5	9,10.5
Height under substructure m		6.26	6.26	7.7	7.7	7.7,9.2	7.7,9.2