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Drawworks. Solid Performance in Conventional or AC Gear-Driven Models

Like every piece of drilling equipment LeTourneau Technologies™ Drilling Systems manufactures, our drawworks are engineered for unmatched reliability, high performance, and cost efficiency.

Whether the job calls for conventional chain-driven drawworks, or our advanced AC gear-driven model, you'll find the features, safety assurance, and low maintenance you expect from LTI. And LTI offers the highest hook-load you'll find -- a 4500 hp input rating, and static load capacity of 2.5 million pounds.

Conventional Chain-Driven Drawworks

LTI offers six models (see chart below), ranging from the LDW1000 (1000 input HP) to the LDW4500 (4500 input HP). Hoisting power is provided by a two- or three-motor drive system which can either be variable-frequency AC or SCR-controlled DC.

Plus, LTI chain-driven drawworks are equipped with a robust disc brake system featuring hydraulically applied service brake calipers as well as spring-actuated emergency / parking brake calipers for fail-safe operation. This brake system offers superior performance versus conventional band brakes.

All LTI chain-driven drawworks come mounted on oilfield-type skids with provisions for crane lifting and easy tailboard loading onto transport trucks or rig structures.

Conventional Chain-Driven Drawworks Performance Specifications

MODEL	DRUM CLUTCH	LOW		HIGH		DRILLING DEPTH RANGE
MODEL	TRANSMISSION	LOW	HIGH	LOW	HIGH	DRILLING DEPTH RANGE
LDW1000*	6 LINES	320	205	100	65	8,000-12,000'
	8 LINES	415	265	130	85
	10 LINES	500	320	160	100
LDW1500*	8 LINES	500	320	180	115	11,000-16,000'
	10 LINES	605	390	215	140
	12 LINES	710	455	250	160
LDW2000*	8 LINES	660	415	270	170	13,000-20,000'
	10 LINES	805	505	330	205
	12 LINES	940	590	380	240
LDW3000*	8 LINES	1000	730	360	260	16,000-30,000'
	10 LINES	1210	880	435	315
	12 LINES	1400	1000	505	365
	14 LINES	1582	1140	570	413
LDW3000* HEAVY DUTY	10 LINES	1392	1008	447	323	16,000-30,000'
	12 LINES	1609	1165	517	374
	14 LINES	1814	1313	582	422
	16 LINES	2000	1448	642	465
LDW4500**	10 LINES	1714	1035	568	343	20,000-40,000'
	12 LINES	1989	1201	660	398
	14 LINES	2220	1340	736	444
	16 LINES	2455	1483	814	491

* Hook loads based on second layer. **Hook loads based on third layer.
Drawworks drive motors can be either AC or DC. Actual hook load depends on quantity and type of motors used.
Drawworks can be furnished with either an eaton air brake or eddy current brake.

AC Gear-Driven Drawworks

With 90% fewer parts than conventional chain-driven drawworks, LTI AC Gear-Driven Drawworks represent the leading edge of technology. These advanced machines offer new standards of drilling performance, safety, and reliability, combining cost and operational efficiency with a smaller footprint, less weight, reduced noise and smoother operation.

Offered in a choice of 550K, 750K, 1,000K, 1,500K, and 2,000K hook-load models (see chart below), these advanced systems feature a LTI engineered triple braking system for increased safety, including a park and emergency brake, auxiliary brake, and regenerative system.

Higher operational speeds are achieved in all models through their exclusive use of Variable Frequency Drive (VFD) AC motors.

With fewer utilities required for installation and fewer spare parts, the LTI AC Gear-Driven Drawworks is a solid choice for enhanced performance, safety, and unmatched reliability.

AC Gear-Driven Drawworks Performance Specifications

Drawworks Model	Hook Load (Lbs.)	No. of Lines	Drum Size (inches)	Motor Brand	Aux. Brake Option
LDW550K	550,000	10	25 x 49	OEM or other	Air or Electric
	455,000	8
LDW700K	700,000	10	27 x 56-1/4	OEM or other	Air or Electric
	575,000	8
LDW1000K	1,000,000	12	30 x 56-1/4	OEM or other	Air or Electric
	860,000	10
	715,000	8
LDW1500K	1,500,000	14	36 x 72	OEM or other	Air or Electric
	1,330,000	12
	1,150,000	10
LDW2000K	2,000,000	16	42 x 72/82	OEM or other	Air or Electric
	1,810,000	14
	1,610,000	12