THE VIKING


The Viking (460K) Hydraulic Workover Rig is an efficient workover rig that allows all drilling and workover operations to be conducted with a small footprint. With its reduced size, weight and packaging capability, these features can bring down the costs of transportation, as well as maintenance, and make it ideal for equipment areas with spacing limitations.

The rig is an electric powered hydraulic unit capable of creating 460,000 lbs of lift force. The rig, while having powerful lifting capabilities, is also a hydraulic snubbing rig operating with an 11" 5,000 psi, 6 station BOP system. The rig can function very efficiently on both conventional well operations, as well as on all underbalanced situations. Its efficiency contributes to the success of the entire operation. The HWR was also developed to handle sidetrack drilling, milling and conventional drilling applications.

Using "The Viking" in a snubbing operation eliminates the costs of kill fluid. All Systems are PLC controlled (electronic over hydraulic) and computer sequenced. These systems give up to the minute reports of all pertinent well and unit information including: well pressure, tubing depth, weight, tong torque etc.

The Automated Pipe Handling System allows the crew to have very little direct contact with moving parts creating a safe environment for personnel. A four man crew is used to perform all operations with a Rig Manager to ensure service quality and safety standards are maintained.

This HWR can mill or drill while snubbing or in the pipe heavy position. This rotary function is possible throughout the length of the 12' stroke. The rotary system can generate 12,000 ft/lbs torque and up to 70 RPM when required. Specially designed HAES Slips have the advantage of maintaining a full 11" bore without removing slip carriers, greatly speeding up the handling of large diameter tools and reducing accidents.

The Spherical BOP is built into the structure of the Snubbing Unit, eliminating the need for a stripping element. The Spherical BOP is fully accessible, allowing the element to be changed quickly and efficiently. Safety was, and is, the first priority in design and operation.

The Viking Technical Data:

  • 22' overall height
  • Lower Work Basket
  • Lift Capacity 400,000 lbs
  • Snub Capacity 195,000 lbs
  • Hydraulic Jack w/ 12' stroke
  • Built in 2" 5,000 psi Stand Pipe
  • 10,000 ft/lb Rotary Table with Lock
  • All Pipe handling equipment 3 1/2" to 5 1/2" inclusive
  • 4 sets 400K HAES Type "F" Slip Bowls (2 3/8"-8 5/8" and 11" Full Bore capability)
  • Work Basket w/ winch panel and Unit operating controls all PLC (electronic/ hydraulic)
  • 5 1/2" Phoenix Tongs w/ hydraulic backup (2 7/8"-5 1/2" capability)

Sub Structure

  • 13' x 17' base, 30' High

Power Plant

  • 2 Detroit 60 Series Engines, 500 hp each
  • 2 Series 60, 500 hp Marathon Generators
  • 2 Valdor 300 hp electric motors AC
  • 1 Valdor 200 hp electric motors AC
  • 1 200 hp Auxiliary Hydraulic Circuit
  • Total 600 hp Jack, 200 hp Auxiliary, 1,000 hp Generator capability
  • Computer controlled power distribution

Pipe Handling Equipment

  • 58' Derrick rated at 10,000 lbs.
  • Dual counterbalance winches, 6,000 lbs. Capacity 3,000 lbs. per winch/ 5,000 lbs Boom Tugger winch

Well Control Equipment

  • 11" 5M Double Gate (blind rams, pipe rams)
  • 11" 5M Spacer Spool
  • 11" 5M Shaffer Spherical BOP
  • 11" 5M Hydril Stripping Rams

Hydraulic Bleed off/ Equalize Assembly

  • 2" 5M Equalize Loop
  • 2" 5M Bleed Off Loop
  • 11" 5M Kill Spool c/w Two 2 1/1" Gate Valves

3,000 psi Accumulator System w/ Remote Control Station

  • Primary BOP system Ð Class III, 7 station
  • 250 US Gallon usable fluid
  • Secondary BOP system, 6 station
  • Separate high pressure Shear Ram operating circuit

Pumping Equipment

  • Choke Manifold, 62" 5,000 psi w/ 1502 Weco Connections
  • 2-3 1/2" Tubing Safety Valves
  • 1-5,000 psi Circulating Swivel
  • 1-5,000 psi 40 ft. Kelly Hose
  • Pipe Basket w/ 2" 5,000 psi line pipe 100 m., chicksan swivels, crossovers and miscellaneous connections, all piping 1502 Weco connections. All piping integral welded connections

Drilling Mud Pump/Fluid System

  • 400 hp Electric/ Hydraulic
  • 640 Oilwell Triplex Pump
  • 250 bbl, 3 compartment mud tank c/w mud hopper

Auxiliary Equipment

  • Tool Boxes with spare parts and tools
  • Complete lighting system

Safety Equipment

  • Complete Egress System from Work Basket to Deck
  • Complete SCBA equipment for crew
  • 4-60 lb. ABC Fire Extinguishers