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:
Aug. 05, 2025
Filed:
Jan. 05, 2024
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Dimitri Khramov, Katy, TX (US);
Evgeny Barmatov, Cambridge, GB;
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 21/00 (2006.01); C09K 8/44 (2006.01); E21B 43/34 (2006.01);
U.S. Cl.
CPC ...
C09K 8/44 (2013.01); E21B 21/003 (2013.01);
Abstract
A method of forming a fluid loss material for a wellbore fluid includes mixing tannin at least one modifier to form a mixture, heating the mixture to a temperature greater than about 100° C. to react the tannin with the at least one modifier to form a modified tannin, and reacting the modified tannin with an amine to form an organophilic fluid loss material comprising the amine bonded to the modified tannin. Related organophilic fluid loss materials and methods of operating a wellbore are also disclosed.