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:
Sep. 09, 2014
Filed:
Aug. 16, 2010
Applicant:
David C. Herrick, Cody, WY (US);
Inventor:
David C. Herrick, Cody, WY (US);
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 47/00 (2012.01); E21B 49/00 (2006.01); E21B 49/08 (2006.01);
U.S. Cl.
CPC ...
E21B 49/08 (2013.01);
Abstract
A bottomhole assembly is provided with a cathode. The cathode produces a static field in the earth formation and by the electroosmotic effect, inhibits the invasion of the formation by borehole fluids and reduces formation damage. The cathode also results in improved estimates of formation permeability using flow tests. A cathode on a wireline string may be used to reduce water saturation in an invaded zone near a borehole.