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. 23, 2007
Filed:
Jul. 21, 2004
Wanchai Ratanasirigulchai, Shanghai, CN;
Lawrence A. Behrmann, Houston, TX (US);
Andrew J. Martin, Aberdeen, GB;
Kenneth R. Goodman, Cypress, TX (US);
Wanchai Ratanasirigulchai, Shanghai, CN;
Lawrence A. Behrmann, Houston, TX (US);
Andrew J. Martin, Aberdeen, GB;
Kenneth R. Goodman, Cypress, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A method and apparatus for use in a wellbore includes running a tool string to an interval of the wellbore, and activating a first component in the tool string to create a transient underbalance pressure condition in the wellbore interval. Additionally, a second component in the tool string is activated to create a transient overbalance pressure condition in the wellbore interval, or vice versa.