ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,389, issued on June 24, was assigned to OIL AND NATURAL GAS CORPORATION LIMITED (New Delhi).
"Process for preparing non-cementitious loss control composition" was invented by Kishori Lal (Dehradun, India), Abhinav Hazra (Dehradun, India), Deepak Painuly (Dehradun, India) and Parvinder Singh (Dehradun, India).
According to the abstract* released by the U.S. Patent & Trademark Office: "A non-cementitious loss control composition and a method for preparing a non-cementitious loss control composition is provided. The method comprises adding bentonite to water to form a gel slurry and adding a cross linking agent to the gel slurry. The method further comprises adding a binding agent t...