The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 1990
Filed:
Apr. 07, 1989
Vecto Gray Inc., Houston, TX (US);
Abstract
An emergency casing hanger and packoff allows casing to be set when it has been stuck. The hanger has a slip body that slides over the casing after the casing is cut. The slip body lands in a wellhead housing. The slip body has a bowl which carries slips for gripping the casing. A split ring carried by the body engages a recess in the wellhead housing to lock the hanger in place. A wedge moves the split ring outward when rotated by a running tool. An energizing ring carried by the slip body moves the slips downward to energize them. The packoff has a metal seal ring with an annular cavity, defining inner and outer faces. The inner face contains a plurality of deformable bands. A wedge member urges the faces apart, causing the bands to deform and seal against the casing.