1500HP Electrical Land Drilling Rig

  • Model ZJ50/3150D/DB and ZJ50/3150D/DB, 1500HP, electrical onshore drilling rig, designed to drill and complete an oil and gas well with a depth of not more than 5000m.
  • The rig components such as mast, substructure, traveling block, hook, swivel, rotary table, drawworks, etc, conform to API specifications and the industry standards.
  • The mast fabricated in a pin connection type cantilever structure, monkey board, stabbing board and other mast auxiliaries equipped the mast assembly, its dimensions suitable to install top drive unit.
  • The substructure can be manufactured in two-step raising and/or box-on-box substructure. And Steps, handrails, BOP handling trays and other appendixes equipment and facilities fully equipped with the substructure.
  • The main rig movers are diesel engine driven AC generators with enough power for operating the rig.
  • The power drive system available in SCR (AC-SCR-DC) or VFD (variable Frequency Drive, AC-DC-AC) system .
  • The drawworks electrically driven by heavy duty DC or AC motors, with working speed continuously adjustable. Disc brake introduced as the main drum brake, and an eddy current brake also equipped with the drawworks unit.
  • The mud pumps equipped with the rig are single action, triplex slurry pumps, electrically driven by AC or DC truck motors.
  • Rotary table independently driven by a drive system consisting of truck motor, chain gearbox and universal shaft, with working speed continuously adjustable.
  • Air system equipped with the rig, consisting of two each screw rod type air compressor, air tanks, and valves, and valves.
  • A fully equipped mud circulation system including mud tanks, solids control equipment, mud conditioning equipment and circulation lines completed with the rig package.
  • An analog and digital drilling parameter and data monitor and recording system available on the rig.
  • BOP and well kill/choke equipment and facilities shall be equipment with the rig package according to client’s requirement.
  • ​Water and fuel storage and transfer tanks equipped with the rig package

Product Specifications For 1500HP Electrical Land Drilling Rig




Typical model




147ft, cantilever, pin type mast


Two-step raising substructure, or box-on-box type structure

Nominal drilling depth

4500m with 5" drill pipe; or, 5000m with 4 1/2" Drill Pipe

Max. hook load of hoist system

3150kN or 708000lbs

3150kN or 708000lbs

Floor Height



Substructure clearance



Max. input power of drawworks



Drive of drawworks

2 each 800Kw,0-750Vdc DC motor

1 each 1120HP AC motor, frequency variable

Shifts and speed of of drawworks

4F+4R, speed continuously adjustable

1F+1R, speed continuously adjustable

Rotary table

37 1/2"

37 1/2"

Drive of rotary table

Independently driven by one each DC motor

Driven through drawworks

Size and quantity of drill line

1 3/8", 12 lines max. RH

No. and power of mud pump

2 x1600HP

2 x1600HP

Drive of mud pump

2 each 800Kw, 0-750Vdc DC motor

1 each 1120Kw VF AC motor

Main rig generator sets

3 each CAT 3512B/SR4 Gen set, 1900KVA

3 each CAT 3512B/SR4 Gen set, 1900KVA

Assistant generator set

1 each 400Kw, 400Vac, 50Hz AC gen. set

1 each 400Kw, 400Vac, 50Hz AC gen. set

Drive system

SCR/MCC system in an air conditioned house unit

VFD/MCC system in two air conditioned house unit

High pressure mud manifold

4"OD, 5000psi, dual standpipe

Mud tanks


Solids control

2 x shale shaker, 1 x degasser, 1 x mud cleaner, 1 x centrifuge, polymer shear unit

Drilling instrument

Analog and digital drilling data watching and recording system

BOP system recommended

13 5/8", 10000psi, 1xbag BOP, 1x single ram BOP, 1xdouble ram BOP, 7-channel BOP close unit

Choke and kill system recommended

4 1/16", 10000psi kill/choke manifolds and lines

Capacity of water


Capacity of fuel tank