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:
Sep. 14, 1982
Filed:
Nov. 07, 1980
David W Fish, Carrollton, TX (US);
Dresser Industries, Inc., Dallas, TX (US);
Abstract
A well tool assembly comprising a drillable cement retainer and setting tool includes a connection between a setting-tool mandrel and a retainer mandrel allowing for opening and closing of a cement valve in the retainer without disconnecting the setting tool from the retainer. A releasable locking mechanism in the connection keeps a tubular connector between the setting-tool mandrel and the retainer mandrel locked against sliding relative to one of the mandrels prior to deploying an upper slip set of the cement retainer. Additionally, a carrier in the setting tool includes radially resilient lugs connected between the setting-tool mandrel and a retaining sleeve for the upper slip set for sliding upwardly on the setting-tool mandrel to carry the sleeve into an upper position releasing the upper slip set for deployment. A set lock in the retainer holds the retainer mandrel against movement downwardly once the retainer is anchored in the well.