US Patent Issued to Saudi Arabian Oil on Jan. 27 for "Methods for cementing wellbores utilizing spacer fluids that include surfactant packages" (Chinese, Saudi Arabia Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,660, issued on Jan. 27, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).

"Methods for cementing wellbores utilizing spacer fluids that include surfactant packages" was invented by Xuan Zhang (Beijing), Tianping Huang (Beijing), Limin Xu (Beijing) and Vikrant B. Wagle (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "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 weigh...