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:
Feb. 19, 2019
Filed:
Mar. 30, 2015
Applicant:
M-i L.l.c., Houston, TX (US);
Inventors:
Guido De Stefano, Houston, TX (US);
James Friedheim, Spring, TX (US);
Steven Young, Cypress, TX (US);
Assignee:
M-I L.L.C., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/138 (2006.01); E21B 21/00 (2006.01); C09K 8/50 (2006.01); C09K 8/03 (2006.01); C09K 8/36 (2006.01); C09K 8/502 (2006.01); C09K 8/506 (2006.01); C09K 8/508 (2006.01); C09K 8/512 (2006.01); C09K 8/516 (2006.01); C09K 8/32 (2006.01); C09K 8/035 (2006.01);
U.S. Cl.
CPC ...
E21B 33/138 (2013.01); C09K 8/032 (2013.01); C09K 8/035 (2013.01); C09K 8/32 (2013.01); C09K 8/36 (2013.01); C09K 8/502 (2013.01); C09K 8/506 (2013.01); C09K 8/508 (2013.01); C09K 8/512 (2013.01); C09K 8/516 (2013.01); E21B 21/003 (2013.01);
Abstract
A method of sealing a formation that includes drilling a wellbore through the formation while pumping a non-aqueous based wellbore fluid comprising an encapsulated first component into the wellbore, the non-aqueous based wellbore fluid forming a filter cake on the walls of the wellbore; and adding a second component to the wellbore fluid when fluid losses are registered during drilling, whereby the first and second components react to form a chemical sealing layer in the filter cake is disclosed.