TENSION BUOYANT TOWER FOR SMALL FIELDS IN DEEPWATERS

The paper describes a concept for a deepwater platform capable of supporting surface wellheads and drilling or workover operations and/or production equipment for up to 18 wells. The fundamental principles are described along with the functions of the key components. The previous analytical studies and model tests which have contributed to the concept are shown to confirm and clarify the concept. The concept could be applicable to hydrocarbon reservoirs in water depths from 1500ft to several thousand feet worldwide. The concept can be engineered, fabricated and installed using existing methods and infrastructure. Drilling operations are similar to jack-up drilling technology. The results show that by restraining the buoyant hull against heave, while permitting some amount of pitch, an economical system can be configured. A key factor is the arrangement of well and structural tubular axial stiffnesses in relation to their distance from the centre. The concept allows mean and axial tensions to be optimized to the extent that non-premium threaded connectors may be utilized for the tendons and run by the rig.

  • Supplemental Notes:
    • OTC 95, 27th Annual Offshore Technology Conf; 1-4 May 1995; Houston, Tx, USA. Procs. Vol 3, ppr 7805, p 13 [10 p, 4 ref, 1 tab, 16 fig]
  • Authors:
    • Perryman, S R
    • Horton, E E
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00727712
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Nov 4 1996 12:00AM