US Patent Issued on June 2 for "Set on demand cement" (Texas Inventors)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,036, issued on June 2.

"Set on demand cement" was invented by Radhika Suresh (Sugar Land, Texas), Angela Doan (Spring, Texas), Rostyslav Dolog (Houston) and Oleg Mazyar (Katy, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of cementing a wellbore includes injecting into the wellbore a cement slurry containing: an accelerator composite having a shell encapsulating a core including an accelerator and a disintegrating agent, the disintegrating agent including at least one of a phase change material or a gas-producing material; a cementitious material; and an aqueous carrier; and releasing the accelerator from the accelerator composite." ...