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:
Jul. 17, 1979
Filed:
Sep. 27, 1978
Amareswar Amancharla, League City, TX (US);
Baker International Corporation, Orange, CA (US);
Abstract
An apparatus is provided for selective mechanically activated latching and fluid activated locking and unlocking of a tubular string within an anchor assembly in a subterranean bore, wherein the anchor assembly has defined thereon co-engaging elements for selectively latching and locking of a tubular string with the anchor assembly. The apparatus comprises a housing which contains second co-engaging means which are complimentarily operational with the first co-engaging means. A longitudinally shiftable sleeve is initially secured to at least one of the housing and the second co-engaging means and is initially positioned with respect to the second co-engaging means whereby the second co-engaging means is selectively and repeatably latchable with respect to the first co-engaging means. A first seat is provided within said shiftable sleeve for sealing receipt of a first sealing element whereby the sleeve is converted to a fluid responsive piston for longitudinal shifting of the sleeve or the second co-engaging means relative to the other of the sleeve and the co-engaging means to a first position whereby the first relative shifting to the first position locks the second co-engaging means with the first co-engaging means. Second seat means for sealing receipt of a second sealing element is provided whereby the sleeve means is again converted to a piston to longitudinally shift either the sleeve means or the co-engaging means relative to the other of the sleeve means and the co-engaging means to a second position to unlock the first and second co-engaging means.