Roy J Boeker

US Patent:

46468455, Mar 3, 1987

Filed:

Aug 14, 1984

Appl. No.:

6/640719

Inventors:

Roy A. Boeker - Humble TX

Assignee:

Cactus Wellhead Equipment Co., Inc. - Houston TX

International Classification:

E21B 3303

US Classification:

166387

Abstract:

Methods and apparatus for effecting a fluid-tight seal between a surface of an oil and/or gas well tubing or casing and a wellhead member are provided, wherein the surface has been unprepared to form the seal. The wellhead member is positioned circumferentially about a stub of the tubing or casing. A metal-to-metal fluid-tight sealing means of the wellhead member is positioned adjacent the unprepared surface of the tubing or casing. The sealing means has at least one metallic projection positioned to extend toward the unprepared surface of the tubing or casing. The metallic projection is forced into the unprepared surface of the tubing or casing thus to form a seal therebetween.