Company Profile
Company Charter
Code of Conduct
Press Room
Investor Relations
Newsletters
Health, Safety & Environment
Library
Guest Book
Links

Project Management
Engineering
Fabrication
Marine Installation
SubSea
 

JRM Engineering
Mentor Subsea
FloaTEC

Map

Altamira, Mexico
Baku, Azerbaijan
Batam Island, Indonesia
Chennai, India
Dubai, UAE
Houston, Texas
Jakarta, Indonesia
Morgan City, Louisiana
New Orleans, Louisiana

Our Philosophy
Employment Opportunities

Supplier Registration

Site Map

CompanyServicesTechnologyProjectsLocationsHuman ResourcesSuppliersContact Us Search
 
Home > Projects

DEVILS TOWER

World's Deepest Spar

 
Client Dominion Exploration & Production, Inc.
Region Gulf of Mexico
Location Mississippi Canyon 773
Water Depth 5610 ft.
Services Performed Project Management, Procurement, Front-End Engineering Design, Detailed Engineering, Fabrication, Subsea, Marine Installation
Contractor SparTEC, Inc.
Award June, 2001
Completion 4th Quarter, 2003
Lease Holders

Dominion Exp. & Prod., Inc. and Pioneer Natural Resources USA, Inc.

Project Manager Tom Carr
Key Participants

Engineering - JRME
Deck Outfitting - Harbor Island Fab.
Subsea & Riser Systems - Mentor Subsea
Topsides Structure - TNG
Hull Structure Fab - P.T. McDermott Indonesia

Total Weight

12,278 ST (hull only)

Prod. Capacity

110 MMscfd - gas
60 Mbpd - oil
40 Mbpd - water

Description:

  • 94 ft Hard Tank Diameter with 42 x 42 ft. centerwell for 8 production risers, length 241 ft 6 in. Truss length 304 ft 6 in. Soft tank depth 40 ft. Overall Spar length 586 ft with 50 ft hard tank freeboard.

Scope:

  • EPIC Contract to provide a complete truss Spar based, floating workover and production platform with eight dry tree riser assemblies.

Innovations:

  • Worlds deepest Spar located at Mississippi Canyon Block 773 in 5,610 feet of water.

Technology:

  • The Spar will be moored by a nine line permanent, taut catenary system. The mooring will be composed primarily of jacketed steel spiral strand wire, with 5.75” chain at each end. The mooring system is secured to the seafloor with suction pile anchors.
  • Top tension for the risers will be provided by buoyant air cans. Production Risers are single cased with threaded coupling connectors.