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:
Oct. 25, 2005
Filed:
May. 12, 2003
Applicants:
Paul John Feluch, Okotoks, CA;
Boris Timoffee, Calgary, CA;
Inventors:
Paul John Feluch, Okotoks, CA;
Boris Timoffee, Calgary, CA;
Assignee:
Stellar Tech Energy Services Inc., Calgary, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B034/06 ;
U.S. Cl.
CPC ...
Abstract
The invention provides a downhole shut-in tool for obtaining formation pressure data. The tool includes a fast-closing main valve and a pressure-relief valve operable between open and closed positions to effect periodic sealing and release of formation pressure with respect to the surface.