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. 27, 2026
Filed:
Apr. 10, 2024
Saudi Arabian Oil Company, Dhahran, CN;
Xuan Zhang, Beijing, CN;
Tianping Huang, Beijing, CN;
Limin Xu, Beijing, CN;
Vikrant B. Wagle, Dhahran, SA;
Saudi Arabian Oil Company, Dhahran, SA;
Abstract
A method for cementing a wellbore may include introducing a spacer fluid into the wellbore such that at least a portion of a drilling fluid positioned in the wellbore is displaced by the spacer fluid, the spacer fluid including from 80 wt. % to 99 wt. % of an aqueous based fluid, based on the total weight of the spacer fluid, from 1 wt. % to 20 wt. % of a surfactant package, based on the total weight of the spacer fluid, wherein the surfactant package comprises at least 99 wt. %, based on the total weight of the surfactant package, of the combination of one or more alkyl ether carboxylates, one or more alcohol ethoxylates, and one or more zwitterionic surfactants, and introducing a cement slurry into the wellbore such that at least a portion of the spacer fluid is displaced by the cement slurry.