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:
Jul. 08, 2025
Filed:
Feb. 03, 2022
Applicant:
Saudi Arabian Oil Company, Dhahran, SA;
Inventors:
Sivaprakash Shanmugam, Houston, TX (US);
Ashok Santra, Houston, TX (US);
Carl Thaemlitz, Houston, TX (US);
Assignee:
Saudi Arabian Oil Company, Dhahran, SA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/24 (2006.01);
U.S. Cl.
CPC ...
C09K 8/24 (2013.01);
Abstract
A drilling fluid includes an aqueous phase, a clay-based component, and an amphiphilic branched star polymer. The amphiphilic branched star polymer is a crosslinked, polymerized reaction product of crosslinker C, hydrophobic monomer B, and hydrophilic monomer A. The crosslinked polymerized reaction product includes a plurality of block copolymer segments of hydrophobic monomer B and hydrophilic monomer A interconnected via crosslinker C.