US Patent Issued to Eavor Technologies on July 14 for "Cooling for geothermal well drilling" (Canadian Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,391, issued on July 14, was assigned to Eavor Technologies Inc. (Calgary, Canada).

"Cooling for geothermal well drilling" was invented by Matthew Toews (Calgary, Canada), Michael Holmes (Calgary, Canada), Ariel Torre (Calgary, Canada), Aleksandr Vetsak (Calgary, Canada) and Mark Hodder (Calgary, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for drilling a geothermal well in a subterranean zone includes drilling, with a drill string, a wellbore of the geothermal well in the subterranean zone. An inherent temperature of the rock adjacent a rock face at a downhole end of the wellbore is at least 250 degrees Celsius. While drilling, a d...