Offshore well system and method

Patent · Tue Feb 26 04:00:00 EST 1991

OSTI ID:5367157

Patteson, R M; Lynch, S C

This paper discusses an offshore well system for conducting fluids between a point above the surface of a body of water and a point within a subterranean formation below the body of water. It comprises an elongated combination drivepipe and caisson extending from the formation to a point above the water surface: means forming a landing surface near an upper end of the caisson, at least a first casing string disposed within the caisson, the first casing string including means forming a casing hanger at an upper end thereof and cooperable with the means forming the landing surface for suspending the casing string in the caisson, a wellbore fluid diverter secured to the caisson at a point above the landing surface and having an internal diameter large enough to permit insertion of the first casing string and the hanger through the diverter for landing the hanger on the landing surface; and a wellhead body having an elongated pipe string connected thereto and insertable through the diverter for landing on a surface formed on the casing hanger.

• Assignee: Atlantic Richfield Co., Los Angeles, CA (USA)
• Patent Number(s): US 4995763; A
• Application Number: PPN: US 7-471191
• OSTI ID: 5367157
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL EQUIPMENT
DESIGN
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
PIPES
WELL INJECTION EQUIPMENT
WELLHEADS
WELLS