US Patent Issued to Schlumberger Technology on Oct. 28 for "Drilling fluids including a viscosifier, and related methods" (Texas Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,638, issued on Oct. 28, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).

"Drilling fluids including a viscosifier, and related methods" was invented by Kristina Daeffler (Sugar Land, Texas), Linus Sebelin (Houston) and Balakrishnan Panamarathupalayam (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drilling fluid for drilling a subterranean wellbore includes water, salt, and a viscosifier comprising a first component comprising a reaction product of at least one acrylamide monomer and at least one sulfonated anionic monomer, and a second component comprising styrene-butadiene polymer. Related methods of operating a wellbor...