ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,404, issued on April 7, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).
"Low density oil-based wellbore fluids and methods thereof" was invented by Roger Daniloff (Sandnes, Norway), Arne Asko (Sandnes, Norway), Nicholas Hilbig (Sandnes, Norway) and Jerome Pic (Tananger, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wellbore fluid may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; an emulsifier stabilizing the non-oleaginous phase within the oleaginous phase; a low density material selected and in an amount to result in a specific gravity of the wellbore fluid that is less than 0.83; and at ...