Casing hanger and running apparatus

Patent · Tue Sep 16 04:00:00 EDT 1986

OSTI ID:5376016

Goris, G A; Pettit, J

An apparatus is described for supporting a tubular string extending into a well bore from a surrounding wellhead, which consists of: a hanger body adapted to be located in the wellhead and having internal and external threads thereon and at least one sealing surface; a running tool connectable to a running string; means releasably connecting the hanger body to the running tool to enable the hanger body to be lowered into the wellhead; and packoff means. A method of lowering and sealing a casing hanger in a wellhead is described comprising the steps of: attaching apparatus onto a running tool which has a casing hanger and a packoff assembly thereon; connecting the running tool and apparatus onto a means for lowering and rotating the running tool into a wellhead located subsea; positioning the casing hanger in the wellhead, the casing hanger being adapted for that purpose; rotating the running tool to release the casing hanger and the packoff assembly from the running apparatus and the packoff assembly to become connected to the casing hanger and to seal the casing hanger with respect to the wellhead.

• Assignee: Vetco Offshore Industries, Inc., Ventura, CA
• Patent Number(s): US 4611663
• OSTI ID: 5376016
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
HOISTING
JOINTS
MATERIALS HANDLING
MECHANICAL STRUCTURES
MOTION
NATURAL GAS WELLS
OIL WELLS
PACKINGS
PIPES
POSITIONING
ROTATION
SEALS
SUPPORTS
THREADED JOINTS
UNDERWATER OPERATIONS
WELL CASINGS
WELLHEADS
WELLS