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. 17, 2007
Filed:
Oct. 17, 2001
Giancarlo Tomasso Pietro Pia, Aberdeen, GB;
Giancarlo Tomasso Pietro Pia, Aberdeen, GB;
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
A method of isolating a reservoir of production fluid in a formation comprises providing a pair of valves () in a bore intersecting a production formation and in which the hydrostatic pressuer in the bore at the formation is normally lower than the formation pressure, and then ontrolling the valves () from surface such that the valves () will only move from a closed configuration to an open configuration on experiencing a predetermined differential pressure across the valves.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile