Universal flexbowl wellhead and well completion method

Patent · Tue Dec 12 04:00:00 EST 1989

OSTI ID:7017462

Demny, A C; Harwell, J M; Etheridge, R H; Bush, R E

This patent describes a method of providing a hanger for well pipe or the like in a wellhead housing. It comprises: positioning a split flexible support ring in a releasably connected contracted position on a running tool with its outside diameter less than the inside diameter of a wellhead housing in which it is to be mounted; lowering the running tool with the support ring in the contracted position to a point in the wellhead housing opposite an annular recess in the bore of the housing; then engaging the support ring with locking means mounted in the wellhead housing while in position opposite the recess to prevent it from moving relative to the wellhead housing; and thereafter moving the running tool relative to the ring to release it from the support ring and to allow the support ring to expand radially outwardly into a seated position in the recess, but with a shoulder on the support ring extending into the bore of the housing to provide a support thereafter for a pipe hanger or the like; withdrawing the running tool from the wellhead housing; and lowering the pipe hanger into the wellhead housing and seating the hanger on the support ring.

• Assignee: Seaboard-Arval Corp., Houston, TX
• Patent Number(s): US 4886121; A
• Application Number: PPN: US 7-279926A
• OSTI ID: 7017462
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
DESIGN
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
FASTENERS
INSTALLATION
MECHANICAL STRUCTURES
NATURAL GAS WELLS
OIL WELLS
PIPES
SUPPORTS
WELL COMPLETION
WELLHEADS
WELLS