Wellhead stabilizing member with deflecting ribs

Patent · Tue Jun 21 04:00:00 EDT 1988

OSTI ID:6835124

Ames, T J; Boehm, Jr, C F

In a subsea well assembly of the type having a tubular housing at the sea floor into which is inserted a tubular wellhead having means on its upper end for connection to riser conduit extending to the surface, an improved means for reducing rocking movement of the wellhead relative to the housing due to bending movement of the riser conduit is described, comprising: a metal support member carried by the wellhead. The support member having circumferentially extending ribs for engaging an inner wall of the housing. Each rib having an outer diameter that prior to engaging the inner wall is greater than the inner diameter of the inner wall of the housing at the point of contact. The support member are a substantially constant inner diameter when mounted to the wellhead, causing the ribs to deflect in an interference fit when the wellhead is inserted into the housing.

• Assignee: Hughes Tool Co., Houston, TX
• Patent Number(s): US 4751968
• OSTI ID: 6835124
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
423000 -- Engineering-- Marine Engineering-- (1980-)
DAMPING
DESIGN
MARINE RISERS
MECHANICAL STRUCTURES
MOTION
NATURAL GAS WELLS
OFFSHORE PLATFORMS
OIL WELLS
PIPES
SHOCK ABSORBERS
SUPPORTS
WELLHEADS
WELLS