Raymond O Walker

US Patent:

42979650, Nov 3, 1981

Filed:

Sep 6, 1979

Appl. No.:

6/073096

Inventors:

Edward E. Horton - Portuguese Bend CA
Raymond W. Walker - Huntington Beach CA

Assignee:

Deep Oil Technology, Inc. - Irvine CA

International Classification:

B63B 3544

US Classification:

114265

Abstract:

A tension leg structure for use with a tension leg platform or the like to interconnect an anchor on the sea floor and platform in which the tension leg structure comprises interconnected buoyant pipe members for transmitting tension forces and for withstanding hydrostatic pressure. Each member has internal watertight bulkheads defining a buoyancy chamber. Tremie pipe extends through the bulkheads of each member and has ends terminating in a slipover coupling provided within a joint interconnecting adjacent tension buoyant members.

US Patent:

40983331, Jul 4, 1978

Filed:

Feb 24, 1977

Appl. No.:

5/771799

Inventors:

Donald R. Wells - Villa Park CA
Raymond W. Walker - Huntington Beach CA

Assignee:

Compagnie Francaise des Petroles - Paris

International Classification:

E21B 33035
E21B 4301

US Classification:

166 05

Abstract:

A marine riser system for offshore well installations having a plurality of satellite subsea wells wherein production flow is conducted to a composite manifold structure on the sea floor, is raised to a floating platform for processing and processed production fluid is then returned to the manifold for transfer to storage or other facility. A riser pipe system which extends between the manifold structure at the sea floor and a floating platform wherein unprocessed production fluid is transported under high pressure in the riser system by a plurality of satellite or perimeter riser pipes which are arranged in a circle about a central riser pipe and which are separately and independently supported and maintained. Processed production fluid is conducted under low pressure through the central riser pipe at the center of the arrangement of satellite pipes, the central riser pipe providing a main structural member for the riser system. A marine riser pipe system having an upper riser pipe portion including central and satellite riser sections supported and carried by the floating platform and a lower riser pipe portion and buoyant structure associated therewith which include corresponding riser sections and which is capable of independently supporting itself in water when separated from the upper riser portion.