Metal seal for wellhead apparatus

Patent · Tue Mar 03 00:00:00 EST 1987

OSTI ID:6746654

Boecker, R A

A method is described of effecting a fluid-tight seal between a surface of an oil and/or gas well tubing or casing and a wellhead member, wherein the surface has been unprepared to form the seal, comprising the steps of: positioning the wellhead member circumferentially about a stub of the tubing or casing; positioning a metal-to-metal fluid-tight sealing means of the wellhead member adjacent the unprepared surface of the tubing or casing, the sealing means having at least one metallic projection positioned to extend toward the unprepared surface of the tubing or casing; and forcing the metallic projection into and penetrating the unprepared surface of the tubing or casing to form a seal therebetween.

• Assignee: Cactus Wellhead Equipment Co., Inc., Houston, TX
• Patent Number(s): US 4646845
• OSTI ID: 6746654
• Resource Relation: Patent File Date: Filed date 14 Aug 1984
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS WELLS
DRILL PIPES
SEALS
WELLHEADS
OIL WELLS
METALS
POSITIONING
WELL CASINGS
WELL COMPLETION
DRILLING EQUIPMENT
ELEMENTS
EQUIPMENT
PIPES
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing