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:
Apr. 18, 2017
Filed:
Jul. 22, 2013
Baker Hughes Incorporated, Houston, TX (US);
David P. Gerrard, Montgomery, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
A coiled spring is extended axially and its outside diameter is reduced for the run in position of a tool preferably a liner hanger. Upon release of the stored potential energy the diameter of the spring grows so that contact of the surrounding tubular is made by the spring to at least in part support one string to another. Alternatively, the rotational force from unwinding the spring can drive a slip or other support member radially outwardly into contact with the surrounding tubular and if desired lock the gripping position between the tubulars. Unexpended potential energy of the unwinding spring can also be a residual force to hold the expanded spring to the surrounding tubular. The axial shrinkage of the coiled spring can also be deployed in actuation of the slip in conjunction with rotational movement to advance the slip radially for a grip of the surrounding tubular.