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:
Feb. 22, 1994
Filed:
Mar. 30, 1993
Charles D Bridges, Cypress, TX (US);
ABB Vetco Gray Inc., Houston, TX (US);
Abstract
An emergency casing hanger can be lowered over casing collars and into a wellhead housing to support a string of casing. The casing hanger has a slip bowl which is slotted so that it can be radially expanded to insert over the casing collar. Slips are carried in the interior of the bowl for gripping the casing once the slip bowl is in position. The running tool has an inner sleeve that holds the slips in a retracted position and holds the slip bowl in an expanded position until the slip bowl clears the collar. Once the running tool has been removed, a honing tool is then lowered over the casing. The honing tool has honing stones mounted in a housing and biased inward for smoothing the exterior of the casing to receive a seal.