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:
Jan. 05, 2021
Filed:
Dec. 19, 2018
Halliburton Energy Services, Inc., Houston, TX (US);
Hui Zhou, The Woodlands, TX (US);
Jay Paul Deville, Spring, TX (US);
Chesnee Lae Davis, The Woodlands, TX (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
Compositions of crosslinked polymers and methods of using such compositions as viscosifiers and fluid-loss control additives in drilling and treatment fluids for subterranean applications are provided. In some embodiments, the methods include: (A) forming a treatment fluid comprising a divalent brine and a crosslinked polymer composition, wherein the crosslinked polymer composition includes: (i) at least one polymer that includes at least a first monomeric unit of one or more N-vinyl lactams; and (ii) a crosslinker selected from the group consisting of: divinyl ether, diallyl ether, vinyl or allyl ethers of polyglycols or polyols, divinylbenzene, 1,3-divinylimidazolidin-2-one, divinyltetrahydropyrimidin-2(1H)-one, dienes, allyl amines, N-vinyl-3(E)-ethylidene pyrrolidone, ethylidene bis(N-vinylpyrrolidone), and any combination of any of the foregoing; and (B) introducing the fluid into a portion of a well bore penetrating at least a portion of a subterranean formation.