The paper describes the design process for an asymmetric, disconnectable spread mooring system for a tanker-based FPSO offshore West Africa in 50 feet of water. The mooring system design process was driven by cost effective solutions to the challenges of this particular oil reserve. The final mooring design is installed and operating successfully today. This mooring system design was a unique solution using engineering innovations to solve the challenges of ultra shallow water.

and d o a d oil fiom subsea wells in water depths ranging roughly This paper m s prepared tw pmnnWjon at tha 1887 Omhom Technoh~~ Confemnm held in Houston, Texas. 5-8 May 1887. h m 430 to 875 feet. Furthermore, the FPSO was required to be o~erational in the field less than one year h m authorization for T h h p a w m a nlected tw pn+nmt#n by tha OTC P r q~ C o m m b (dkuving W ot information m i n e d in an akb.ct submtbd by the avlhor(s). Conbrnb d tha pepor, u ebendihlres. The project required conventional methods of presented, haw not k e n r w h d by the Omhom Technology Confannos and a n subject to mcsdion byhs.rr(hor(s). The material. u pmaented. dosr not n-ri l y foiled any position project management because such a conversion would normally of tha ~hhors ~echnology Contennos or L of~ico~. ~~ectmnic o prod^, d l m i m , or require approximately 18 months to complete. MEGI awarded a 8tofags cf my part d this p e w tw eannmcial p u m wiltmi the Mtm conwnt cf the O m h m Technology ~onte-ia prohibited. ~ermh*on to nproduca in print ia rsrbictsd to turnkey contract for the supply and operation of the FPSO to an abstract cf not mom than 500 wwds; Illudmt#ns may not b. copbd. The abcb.ct mud contain conspicuous ackmw~gment cf whom and by nmom tha paper m s pmwnbd.Oceaneering Production Systems (OPS) of Houston, Texas. AbstractThis paper describes the design, conversion and installation of a large FPSO as an integral element in the fast-track development of the Zafiro field offshore Equatorial Guinea. The FPSO, Zafiro Producer, was a key part of the critical path associated with achieving the overall goal set by Mobil Equatorial Guinea, Inc.: to begin production within 18 months of drilling the Zafiro 1 discover well. Effectively, this required the FPSO to be operational in approximately one year f b m the start of concept e n g i n b g . As reservoir definition was still evolving, functional specifications and cldcation society's mpimnents were used to guide the &sign. However, as an added challenge, the system required maximum flexibiity for future expansion should the Zafiro field prove to have