DH350 oil and gas drilling rig

The DH350 oil and gas drilling rig

Eﬃcient, economical, and highly mobile, the Epiroc DH350 drilling rig is designed to exceed today’s energy industry standards. Smart automation-friendly features require fewer crewmembers while allowing for a safer work environment.

Technical data

Metric
US/Imperial

Mast

Transport weight	68 000 lb 30 844 kg
Transport length	14,6 ft 47,9 m
Transport width	9,8 ft 3 m
Transport height	9,5 ft 2,9 m
Bottom of spindle to top of table	58,75 ft 17,91 m
Bottom of spindle with kelly cock, float sub and 4 1/2 dp saver sub to top of table	52,2 ft 15,9 m
Pullback sheave diameter	55,12 inch 1 400 mm
Pullback cable diameter	2,04 inch 52 mm
Pulldown sheave diameter	20,13 inch 511 mm
Pulldown cable diameter	0,87 inch 22 mm
Fast feed down speed	180 ft/min 4,86 m/min
Slow feed up speed	0 ft/min - 123 ft/min 0 m/min - 37,49 m/min
Slow speed up regen speed	0 ft/min - 180 ft/min 0 m/min - 54,86 m/min
Rotational torque up to 80 rpm	30 000 lb/ft 40,67 kNm
Rotational torque up to 160 rpm	15 000 lb/ft 20,33 kNm
0 to 90°, twin cylinder tip out top drive capacity	10 000 lbs 4 536 kg

Power unit

Substructure

Transport weight	80 000 lb 36 287 kg
Transport length	43,6 ft 13,3 m
Transport width	12 ft 3,7 m
Transport height	9,8 ft 3 m
Ground pressure lower box beams	36 psi 2,48 bar
Ground pressure front jack/walker pads	73 psi 5,03 bar
Ground pressure rear jack/walker pads	45 psi 3,1 bar
Combined ground pressure	22 psi 1,51 bar
Bop clearance envelope height	19,2 inch 5,8 m
Bop clearance envelope width (driller side to off driller side)	6,2 inch 1,9 m
Bop clearance envelope length (powerpack to pipe handler)	13,1 inch 4 m
360 degress rig walking/jacking maximum load	655 000 lb 294 835 kg
Work floor-dimensions with driller’s cab (area with cabin)	306 sq/ft 8,7 m²
API master bushing	27,5 inch 698,5 mm
Bare table opening with bushings removed (square)	3,6 inch 1,1 m
Deck crane horizontal reach	24,6 ft 7,5 m
Winch speed (single line)	60 ft/min 18,3 m/min

Pipe skate

Weight	56 000 lbs 25 401 kg
Transport condition height	8,2 ft 2,5 m
Transport condition width	8,7 ft 2,6 m
Transport condition length	61 ft 18,6 m
Clamp size range	2,87 inch - 20 inch 73 mm - 508 mm
Lifting arm handling capacity	10 000 lbs 4 536 kg
Range II and III drill pipe minimum diameter	2,9 inch 73 mm
Range II and III drill pipe maximum diameter	5,5 inch 140 mm
Range II and III collar minimum diameter	4,49 inch 114 mm
Range II and III collar maximum diameter	8 inch 203 mm
Length	Range II and III casing joints
Casing diameter	4,48 inch - 20 inch 114 mm - 508 mm
Left & right fold out pipe racks for range II and III pipe lengths, 53 pcs each side, maximum weight capacity	96 000 lbs 43 545 kg
Maximum pipe length handling capacity	48 ft 14,6 m

Rig floor

FH80 FloorHand (Iron Roughneck)	.
Size range OD	4 inch - 8,5 inch 101,6 mm - 215,9 mm
Make-up torque	65 000 ft-lbs 88 300 Nm
Break-out torque	88 000 ft-lbs 108 500 Nm
DEN-CON power slips	.
Controls	Hydraulic control from driller's chair
Range II and III BHA drill pipe minimum diameter	2,9 inch 73 mm
Range II and III BHA drill pipe maximum diameter	5,5 inch 140 m
Range II and III BHA collar minimum diameter	4,9 inch 114 mm
Range II and III BHA collar maximum diameter	8 inch 203 mm
Casing minimum diameter	4,49 inch 114 mm
Casing maximum diameter	20 inch 508 mm
Driller's cabin	.
Transport weight	15 000 lbs 6 804 kg
Driller’s cabin height	10,5 ft 3,2 m
Driller's cabin width	9,8 ft 3 m
Driller's cabin length	23,6 ft 7,2 m
Exterior features	Walkway on either side
Screens/gauges-information displayed	Drilling, status, diagnostics, alarms, live hydraulic circuit animation, CAN layout, controllers I/Os, product videos and digital contents
Climate control	AC Rated 31,000 BTU/h @ 800 cfm and heater
Electrical input/transformer	480 VAC / 1 PH / 100 A

Epiroc draws on more than 40 years of experience in the design and manufacture of hydraulic-powered surface drilling rigs. The DH350 oil and gas drill rig combines those years of experience into one of the most advanced hydraulic hoist drilling rigs available today.

Downloads

A major step forward in hydraulic hoist/top-drive drilling rigs.

Faster rig moves

The optimized load configuration and integrated hydraulics allow crane-free rig up in under 12 hours with as few as six (6) rig loads between drilling locations, allowing operators to minimize cycle time and improve long-term well economics. DH350 comes in multiple premium configurations including hands-free.

Safer operations

The crownless telescopic mast featuring 54” Nylatron sheaves provides 350,000 lb. of pullback, 50,000 lb. of pulldown force through the robust tip-out hydraulic top drive. The twin spur gear powerhead offers variable speed electric over hydraulic control with a maximum 30,000 ft-lb of rotary torque, and the ability to handle single joints of Range III drill collars up to 8” inches in diameter.

Reduced flat time

The new single-piece substructure is a slingshot-style unit with integrated hydraulics to provide the fewest number of connections ever required for full rig up. The API monogrammed substructure offers a 27-1/2” split master bushing with a maximum table opening of 44”, which easily accommodates large diameter tools.

Weight	62 000 lbs 28 123 kg
Height	9,6 ft 2,92 m
Width	8,5 ft 2,59 m
Length	35,5 ft 10,82 m
Engine type	Caterpillar C32 Diesel
Rating at 1,800 rpm	1 200 HP 895 kW
Emissions rating	EPA Tier 4 Final
Limiting ambient temperature at sea level	125 °F 52 °C
Driveshaft	Cardan shaft, 1810 series
Gearbox	Custom 3 shaft, 6 pad gearbox 1:1 ratio with pressure-lubricated gears and splines
External connections	Connection panel with thread-on quick connectors for fast, leak-free setup
Wiring	24V with charging terminal, shutoff switches for starters and control box

DH350 oil and gas drilling rig

Improved drilling performance

Lower operating costs

Trusted heritage

The DH350 oil and gas drilling rig

Technical data

Downloads

A major step forward in hydraulic hoist/top-drive drilling rigs.

Faster rig moves

Safer operations

Reduced flat time

Related products and services

Predator 220/250

RD20

Parts and services

Repair kits

DH350 oil and gas drilling rig

Improved drilling performance

Lower operating costs

Trusted heritage

The DH350 oil and gas drilling rig

Technical data

Downloads

The DH350 oil and gas drilling rig

A major step forward in hydraulic hoist/top-drive drilling rigs.

Faster rig moves

Safer operations

Reduced flat time

DH350: Rig up

DH350 rig up

DH350: Load path

DH350: Load Path

DH350: Pipe handling

Related products and services

Predator 220/250

RD20

Parts and services

Repair kits