ALEXANDRIA, Va., March 24 -- United States Patent no. 12,584,391, issued on March 24, was assigned to SAUDI ARABIAN OIL COMPANY (Dhahran, Saudi Arabia).

"Methods and systems of clean-up for a fracturing fluid" was invented by Ali Abdullah Al-Taq (Qatif, Saudi Arabia), Murtada Saleh Al-Jawad (Dhahran, Saudi Arabia), Sajjad Saeed Aldarweesh (Dhahran, Saudi Arabia) and Hussain A. Abbas (Dhahran, Saudi Arabia).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems are disclosed herein. A method may include emulsifying a first emulsion, wherein the first emulsion includes a first aqueous phase, a first hydrocarbon phase, and a first surfactant. The method may include pumping the first emulsion into the...