US Patent Issued to SAUDI ARABIAN OIL on April 29 for "High-performance primary emulsifier for invert-emulsion oil based mud" (Saudi Arabia Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,584, issued on April 29, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).

"High-performance primary emulsifier for invert-emulsion oil based mud" was invented by Jothibasu Ramasamy (Dhahran, Saudi Arabia) and Mujtaba M. Alsaihati (Dammam, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "An invert oil-based mud (OBM) includes an oleaginous continuous phase, an aqueous internal phase, and an emulsifier that has two hydrophilic head groups and a hydrophobic tail group. A method of using an invert oil-based mud (OBM) in a wellbore is provided. The method includes introducing the invert OBM, which includes an oleaginous contin...