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:
May. 20, 2014
Filed:
May. 28, 2010
Adil Mahallab AL Busaidy, Seeb, OM;
Karim AL Sayed, La Defence Cedex, FR;
Fokko H. C. Doornbosch, Oegstgeest, NL;
Carlos E. Baumann, Austin, TX (US);
Lawrence A. Behrmann, Houston, TX (US);
Harvey Williams, Houston, TX (US);
Andrew J. Martin, Barton, GB;
Adil Mahallab Al Busaidy, Seeb, OM;
Karim Al Sayed, La Defence Cedex, FR;
Fokko H. C. Doornbosch, Oegstgeest, NL;
Carlos E. Baumann, Austin, TX (US);
Lawrence A. Behrmann, Houston, TX (US);
Harvey Williams, Houston, TX (US);
Andrew J. Martin, Barton, GB;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A downhole tool assembly for use in a wellbore includes a tubular body carrying an explosive which is selectively detonated to create a dynamic underbalance or overbalance effect in the wellbore. The tubular body has opposite ends provided with plug assemblies including plug elements movable between a normally collapsed state and an actuable expanded state. The plug elements are adapted to be actuated to the expanded state between the tubular body and an outer extent of the wellbore before the creation of the dynamic underbalance or overbalance effect to isolate a discrete segment of the wellbore to which the dynamic underbalance or overbalance effect is confined.