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Case Study

Buckskin Moccasin INTECSEA

plant with binary numbers

An integrated team of INTECSEA, WorleyParsons and Chevron personnel executed the FEED and procurement services for the tieback of three subsea drill centers in the Buckskin and Moccasin fields, located on the Outer Continental Shelf of the Gulf of Mexico, to the nearby Anadarko Lucius Spar facility.

 Challenges

  • Successful execution of the co-located integrated team approach between engineering contractor and the client
  • Support of procurement of long-lead items required advanced engineering of specific systems/components during the Pre-FEED phase.
  • The high pressure high temperature (HPHT) subsea system is located in deep water (approx. 7,000 ft.), requiring advanced engineering techniques for the subsea equipment, flowlines, risers and umbilicals (e.g. utilization of SAFEBUCK for flowline lateral buckling design)
  • Long-distance (23 mile) tie-back of Moccasin field to host facility is challenging for flow assurance of the production flowlines, the design of the chemical injection system and umbilicals, and also the transmission of electrical power for the seabed booster pumps.
  • Development has to accommodate the constraints related to tie-back of a green-field development to an existing 3rd-party host facility
  • Subsea boosting and riser base gas lift are both being investigated to improve productivity and recovery

Results

  • Engineering for the support of the major long-lead packages were completed.
  • High level of alignment, minimal rework, and a streamlined technical solution.
  • Major packages were delivered ahead of schedule which allowed the client to leverage market conditions to an optimal technical and commercial outcome.

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