| US 7,458,425 B2 | ||
| System and method of installing and maintaining an offshore exploration and production system having an adjustable buoyancy chamber | ||
| Keith K. Millheim, The Woodlands, Tex. (US); Eric E. Maidla, Sugar Land, Tex. (US); and Charles H. King, Austin, Tex. (US) | ||
| Assigned to Anadarko Petroleum Corporation, The Woodlands, Tex. (US) | ||
| Filed on Nov. 22, 2004, as Appl. No. 10/994,799. | ||
| Claims priority of provisional application 60/606335, filed on Sep. 01, 2004. | ||
| Prior Publication US 2006/0042800 A1, Mar. 02, 2006 | ||
| Int. Cl. E21B 29/12 (2006.01) | ||
| U.S. Cl. 166—355 [166/350; 166/367] | 71 Claims |
| 1. An offshore exploration and production system, the system comprising:
a well casing disposed in communication with an offshore well;
one or more approximately annular adjustable buoyancy chambers; and
a lower connecting member disposed between said well casing and said one or more approximately annular adjustable buoyancy
chambers.
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