Chain Drive Drilling Rig - Beijing Nocovatek Oil & Gas Equipment Inc.

l The rig is powered by “2000(or 3000) series diesel engine, coupling forward reducer box;

l The drum of drawworks is grooved. The main brake is hydraulic disc brake or band brake and the auxiliary brake is electromagnetic eddy current brake. It is equipped with auxiliary lifting device. The shift is changed by air tube clutch. Cathead drawworks is equipped with sand drum;

l Drawworks of rigs with nominal depth above 4000m is split type and installed above and under the drill floor. Drawworks is placed behind the back of drill floor; According to the bevel gear box and cardan shaft, the power is transmitted up to the drill floor to drive the cathead drawworks and rotary table;

l Integrated chain box compound; Equipped with high power triplex single action mud pump which is driven by cardan shaft;

Mode		ZJ30/1700LDB	ZJ40/2250LDB	ZJ50/3150LDB	ZJ70/4500LDB	ZJ90/5850LDB
Nominal depth m(ft)	114mm(41/2 in.)	1600~3000 (5250~9850)	2500~4000 (8200~13200)	3500~5000 (11500~16400)	4500~7000 (14800~23000)	6000~9000 (19700~30000)
Nominal depth m(ft)	127mm（5 in）	1500~2500 (4920~8200)	2000~3200 (6600~10500)	2800~4500 (9200~14800)	4000~6000 (13100~19700)	5000~8000 (16400~26250)
Max. load of drilling string kN(kips)		1700(382)	2250(496)	3150(695)	4500(992)	5850(1518)
Max. line number strung		5×6	5×6	6×7	6×7	7×8
Dia of drilling line mm(in)		32(1 1/4 4)	32(1 1/4 4)	35(1 3/8)	38(1 1/2)	42(1 5/8)
Dia of traveling sheave mm(in)		1005(40)	1120(44)	1270(50)	1524(60)	1524(60)
Center pipe dia. of swivel mm(in)		75(3)	75(3)	75(3)	75(3)	75(3)
Rated input power of DW kW(hp)		550(750)	735(1000)	1100(1500)	1470(2000)	2321(3000)
Shifting number of DW		4 forward +2 reverse	4 forward +2 reverse	4 forward +2 reverse	4 forward +2 reverse	4 forward +2 reverse
Type of main brake		DISK/Band	DISK/Band	DISK/Band	DISK/Band	DISK/Band
Type of auxiliary brake		Eddy/Eaton	Eddy/Eaton	Eddy/Eaton	Eddy/Eaton	Eddy/Eaton
opening of RT mm(in)		520.7 (20 1/2)	698.5 (27 1/2)	698.5 (27 1/2)	952.5 (37 1/2)	1257.3 (49 1/2)
Shifting number of RT		4 forward +2 reverse	4 forward +2 reverse	4 forward +2 reverse	4 forward +2 reverse	4 forward +2 reverse
Power per MPkW(hp)		735(1000)	956(1300)	1180(1600)	1180(1600)	1470(2000)
Number of MP		2	2	2.3	2.3	3
Power of engine KW(hp)		810(1100)	810(1100)	1100(1500)	1100(1500)	1200(1632)
Capacity of mud tank (BB)		260(1710)	260(1710)	320(2100)	380(2500)	360(2265)
Number of engines		3	3	3	3	3
Mast effective height m(ft)		41(134)	43(142)	45(147)	45(147)	46(152)
Drill floor height m(ft)		5(16.4),6(19.7).7.5(25)	5(16.4),6(19.7).7.5(25)	7.5(25),9(30),10.5(35)	7.5(25),9(30),10.5(35)	9(30),10.5(35),12(40)
Drill floor clearance m(ft)		3.76(12.4),4.7(15.6),6.26(20.5)	3.76(12.4),4.7(15.6),6.26(20.5)	6.12(20)7.62(25),9.12(30)	6.12(20)7.62(25),9.12(30)	7.62(25),9.12(30),12(39.4)
Note: LDB-Chain compound at back and electric drive front