McDermott International announced that the first installation of a rigid reel-lay pipe-in-pipe in the Asia-Pacific region has just been completed at Murphy Oil’s Siakap North-Petai (SNP) development project offshore Malaysia.
At a development depth of more than 3,900 feet, the surrounding water is quite cold and when hydrocarbons flow from the well, the low surrounding temperature can result in wax or methane hydrates to build up inside the pipe resulting in production flow issues. Pipe-in-pipe technology allows heading elements and other technology to maintain the production fluids at a certain temperature and mitigate flow assurance issues.
For this project, McDermott’s McDermott’s Lay Vessel North Ocean 105 was utilized to install the pipe-in-pipe production flowlines and rigid water injection flowlines while flexible risers were installed by McDermott’s North Ocean 102..
The initial turnkey contract was awarded to McDermott in December 2011 which consisted of the design, procurement, fabrication and installation of two complex rigid insulated pipe-in-pipe production flowlines, one rigid water injection and one main umbilical system connecting eight new manifolds and subsea distribution units to existing riser slots.
The overall field development plan consists of eight producing wells and five water injection wells developed as a subsea tie-back to the Kikeh Floating Production Storage and Offloading (FPSO) vessel.