Page 69: of Offshore Engineer Magazine (Apr/May 2013)

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Subsea Tiebacks

US, has been involved in 17 subsea “LLOG uses tiebacks because

Eyebrow tieback projects during its history, many of its prospects would and seeks new, proven technology to continue its success. Currently, not support their own foating its Who Dat development in production systems.”

Mississippi Canyon 503/504/547 is tied back to its own foating — Rick Fowler, production system, which is the vice president of deepwater projects, LLOG.

only privately owned foating almost $1 billion of capital invest- ing signifcant time and capital. By production system in the world. ments that would have been associ- leveraging the Constitution spar, the There, LLOG is ramping production ated with the construction and in- company also increased the facil- up to 20,000b/d of oil and about stallation of a new host production ity’s production capabilities from 22mmcf/d of gas from its three facility,” says Beattie. “Anadarko’s a declining asset with 10,000b/d existing wells. Nine more wells are hub-and-spoke approach to develop of production to up to 60,000b/d planned. The foating production area-specifc oil and natural gas from the three existing subsea wells system can handle about 60,000b/d felds involves making an initial in- in the Caesar-Tonga feld and the and 150mmcf/d. vestment in a host facility and pro- nearly completed fourth. Also, the LLOG’s Mandy project in Missis- ducing those discovered reserves as tieback option enabled production sippi Canyon 199 and Goose project the base project.” from the feld to come online two in Mississippi Canyon 751 also Anadarko’s 100%-owned Consti- years earlier that would have been utilize the technology and are tied tution spar, the hub in this devel- possible with a newly constructed back to Total’s Matterhorn platform. opment, began producing in 2006 facility. The three-well Mandy feld is tied from the Constitution and Ticon- back to Matterhorn, and Goose is deroga deepwater felds. Future Subsea experience a single well that is remotely tied discoveries will also tie back to Elsewhere, LLOG, one of the top into another one of LLOG’s existing the existing infrastructure, sav- ten privately owned E&Ps in the subsea systems at MC707, which

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