VFD Skid-Mounted Drilling Rig

Short Description:

Apart from being more energy efficient, AC powered rigs allow the drilling operator to more accurately control the rig equipment, thus enhancing rig safety and reducing drilling time.Drawworks is driven by two VFD AC motors with 1+1R/2+2R step-less speed, and reversal will be realized by AC motor reversal.On an AC powered rig, AC generator sets (diesel engine plus AC generator) produce alternating current that is operated at variable speed via a variable-frequency drive (VFD).

Send email to us

Product Detail

Product Tags

Description:

Mud Pump is driven by VFD AC motors mounted on the same skid , with V-belt transmission and simple structure.

Independent driven rotary table runs with 1+1R/2+2R step-less speed, and reversal will be realized by AC motor reversal.

Using AC-DC-AC drive technology, rotary table and Drawworks are four quadrant running and full digital vector control.

Dynamic brake is adopted to replace eddy current brake as auxiliary brake.

Automatic drilling is obtained by Drawworks main motor or an independent motor. Intellectual position control for traveling block prevents crown block and rotary table from collision.

Real time communication and network is available by using PROFIBUS technology.

K type mast is suitable for installing Top Drive system of different brand.

Sling shot or swing up substructure and mast are applied so that all the equipment can be installed at lower position

Efficient energy consumption due to a high power factor (minimum 95%),Constant high power even at low speed.

Regenerative braking for safe and efficient control of the drawworks.

Convenient and safe auto-driller system for managing and controlling parameters such as weight on bit (WOB), rate of penetration (ROP), and rotary torque control.

Description:

Specifications/Rig Model		ZJ40/2250DB	ZJ50/3150DB	ZJ70/4500DB
Nominal Drilling Depth	4-1/2ʺ DP	4000m 13,000ft	5000m 16,000ft	7000m 23,000ft
Nominal Drilling Depth	5ʺ DP	3200m 10,500ft	4500m 15,000ft	6000m 20,000ft
General Specifications	Max.Static Hook Load kN(lbs)	2250 (500,000)	3150 (700,000)	4500 (1,000,000)
	Hook Speed m/s(in/s)	0-1.48(0-58)	0-1.60(0-63)	0-1.58(0-62)
	Line Strung	10	12	12
	Drilling Line mm(in)	32 (1-1/4ʺ)	35 (1-3/8ʺ)	38 (1-1/2ʺ)
	Max Fast Line Pull kN(lbs)	275 (61,822)	340 (76,435)	485 (109,000)
Drawworks	Model	JC40DB	JC50DB	JC70DB
	Power Rating kW(HP)	746(1000)	1118(1500)	1492(2000)
	Transmission	Three Shafts and Chain Driven(4 shifts)
	Main Brake	Hydraulic Disc Brake
	Auxiliary Brake	AC Motor Braking / Eaton Disc Brake
Crown Block		TC225	TC315	TC450
Traveling Block		YC225	YC315	YC450
Sheave Diameter(in)		1120 (44ʺ)	1270 (50ʺ)	1524 (60ʺ)
Hook		DG225	DG315	DG450
Swivel	Model	SL225	SL450	SL450
Swivel	Stem Dia.mm(in)	75(3ʺ)	75(3ʺ)	75(3ʺ)
Rotary Table	Opening Dia.mm(in)	698.5 (27-1/2ʺ)	952.5 (37-1/2ʺ)	952.5 (37-1/2ʺ)
Rotary Table	Drive Mode	Independent Rotary or Drawworks Drive
Mast	Height m (ft)	43 (141’)	45 (147’)	45 (147’)
Mast	Max.Static Load kN(lbs)	2250 (500,000)	3150 (700,000)	4500 (1,000,000)
Substructure	Type	Self-Elevating or Box-on-Box
	Height m(ft)	7.5 (25’)	9/7.5 (30’/25’)	10.55/9 (35’/30’)
	Clear Height m(ft)	6.26 (20’)	7.62/6.26 (25’/20’)	9/7.62 (30’/25’)
Mud Pumps	Model×Number	F-1300×2	F-1600×3	F-1600×3
Mud Pumps	Drive Mode	AC Electrical Motor Driven