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:
May. 25, 2004
Filed:
Dec. 04, 2001
John M. Yokley, Kingwood, TX (US);
Larry E. Reimert, Houston, TX (US);
Dril-Quip, Inc., Houston, TX (US);
Abstract
The liner hanger running tool includes improvements to the running tool release mechanism, the packoff bushing, and the packer setting assembly. The release mechanism may be operated hydraulically in response to fluid pressure, although the tool may also be released mechanically by right-hand rotation of the running string. The releasing mechanism includes inner piston , an outer piston , and a clutch . The packoff bushing includes a C-shaped lock ring which allows the packoff bushing to be repeatedly restabbed into the top of the liner hanger. The packer setting assembly includes a C-shaped ring for applying set-down weight to a setting sleeve, with pressure assist provided by seals for engaging the mandrel and the setting sleeve . A method is provided for reliably releasing a running tool from a liner hanger, for allowing stabbing of the running tool packoff bushing into the top of the liner hanger, and for reliably setting the radial set packer element.