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This serial drilling rig specification

Adopting AC VF motor drive, the drawworks , rotary table and mud pump achieves stepless speed regulating function .The drawworks is a structure with single shaft, gear transmission, stepless speed regulating, the brake adopts hydraulic disk brake and dynamic brake together, with simple structure and reliable performance.

Adopting constant WOB auto-bit-feed device, a patent of Honghua , the WOB is controlled precisely. The rig operation has realized the functions for collecting, display, storing, printing and transfer of drilling parameters, and the function of multi-points monitoring and communication. The rig operation has realized the full digital-control or digital closed-loop control for traveling block position, trip speed, safety presetting and interlock protection, and preventing collide up and impact down (crown and RT protection) . with the online monitoring system for working s tatus of mechanical, electric, hydraulic and pneumatic implements, failure alarm and failure self-diagnosis has been realized, the equipments can work normally and troubleshooting can be done easily. The driller control cabin is independent and lifted hydraulically (ZJ70DBS), without contacting the drill floor, with little vibration, and convenient for installation and teardown. The driller control cabin is a pressurized unit for explosion proof (certificated). The drillers can fitful all drilling operation parameter setting on the operating chair, the operation manner has been improved and the labor intensity lightened greatly . It can be equipped with rig moving device, satisfying the requirement for cluster well drilling. Satisfying the requirement for TDS installation.

Rig Model		ZJ20DBS	ZJ30DBS	ZJ40DBS	ZJ50DBS	ZJ70DBS
Nominal drilling depth, 127mm(5)DP, m		2000	3000	4000	5000	7000
Max. hook load,  kN(t)		1350(135)	1700(170)	2250(225)	3150(315)	4500(450)
Drill line number		8	10	10	12	12
Dia. of wireline, mm		29	29	32	35	38
Max. pull of fastline, kN		200	200	275	350	487
Drawworks	Model	JC-20DB	JC-30DB	JC-40DB	JC-50DB	JC-70DB
	Rated power, kW(hP)	400(500)	450(600)	900(1200)	1200(1600)	1940(2600)
	Gears	one gear, stepless speed regulating
Brake		hydraulic disk brake + dynamic brake
		EATON brake + dynamic brake
Crown block		TC135	TC170	TC225	TC315	TC450
Traveling block		YG135	YC170	YC225	YC315	YC450
OD of sheaves of hoisting system, mm			1005	1120	1270	1524
Hook		YG135	YG170	DG225 or DG250	DG315	DG450
Swivel	Model	SL-135	SL-170	SL-225	SL-450	SL-450
	Dia. of stem bore	75	75	75	75	75
Rotary table	Opening dia.  mm(in)	444.5(17 1/2)	520(20 1/2)	698.5(27 1/2)	952.5(37 1/2)	952.5(37 1/2)
	Gears	one gear, stepless speed regulating
	Drive mode	independent motor drive
Derrick (mast)	Type	K or telescoping	K or A	K	K	K
	Height, m	31 or 39	41	43	45	45
	Max. load, kN(lbs)	900	1700	2250	3150	4500
Substructure	Type	box on box, or telescoping		dual-lifting	dual-lifting or swing up
	Drillfloor height	3.8 or 4.5	5 or 5.5	7.5	9	10.5
	Clearance height under rotary beam, m	2.6 or 3.3	3.8 or 4.3	6	7.6	9
Mud pump	Model×number	F800×1	F1000×2	F1300×2	F-1600×2	F-1600×3
	Drive mode	electric drive			electric drive
Electric control mode		AC-DC-ACone to one

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