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:
Mar. 20, 2001
Filed:
Oct. 07, 1998
Larry E. Reimert, Houston, TX (US);
Charles E. Robinson, Katy, TX (US);
Dril-Quip, Inc, Houston, TX (US);
Abstract
Wellhead apparatus is shown to comprise a casing hanger releasably latched to a running tool for lowering, landing and locking within the bore of a housing so as to suspend an inner casing which is suspended from the hanger within an outer casing string to which the housing is connected. The hanger includes a mandrel carrying a lock ring for locking in a recess in the housing bore, and a seal sleeve is carried by the mandrel for movement between an upper position to permit cement to be circulated through a space between the mandrel and a lower position closing the space. The tool includes a body carrying a latch ring which is held within a groove in the bore of the mandrel as the hanger is lowered and locked within the housing bore, and which may be actuated to lower the sleeve into sealed position and release the latch ring for retrieval of the tool, from the hanger within the well bore.