Method and apparatus for connecting a tubular element to an underwater wellhead

Patent · Tue Jan 13 04:00:00 EST 1987

OSTI ID:7001518

Harrington, J P

An apparatus is described for connecting a tubular member to an underwater wellhead of the type including a casing pipe having an annular exterior collar which includes flow-by ports, the apparatus comprising: a housing having an upper end and a lower end, the interior diameter of the lower end being of a size sufficient to fit over the wellhead on the upper end of the casing pipe, the wellhead being adapted for connection to the tubular member; a set of helical threads formed on the radially outer side of the housing; a substantially tubular nut threadably engaged with the helical threads; a set of lugs mounted on the lower end of the nut, the lugs being adapted for engagement with the flow-by ports; and a set of slips mounted on the lower portion of the housing for fixedly engaging the exterior of the casing.

• Assignee: Amoco Corp., Chicago, IL
• Patent Number(s): US 4635728
• OSTI ID: 7001518
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONDUCTOR DEVICES
CONNECTORS
DRILL PIPES
DRILLING EQUIPMENT
ELECTRICAL EQUIPMENT
EQUIPMENT
FASTENERS
INSTALLATION
JOINTS
NATURAL GAS WELLS
OIL WELLS
PIPES
SIZE
THREADED JOINTS
UNDERWATER OPERATIONS
WELL CASINGS
WELLHEADS
WELLS