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. 27, 2010
Filed:
Nov. 14, 2005
Applicant:
Michael Wardley, Laurencekirk, GB;
Inventor:
Michael Wardley, Laurencekirk, GB;
Assignee:
Caledus Limited, Aberdeen, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/00 (2006.01); E21B 33/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
Apparatus for use above and below a restriction in a well bore and a method of operation is described. The apparatus comprises an upper element, such as a wiper, operable in the well bore above the restriction and a lower element, which may be a lower wiper, operable in the well bore below the restriction. A drop ball sized to pass through the restriction is released from the upper element and thereby passes through the restriction to operate the lower element. In one embodiment, the apparatus is incorporated into a running tool, which may be used to hang liners by dimple forming.