ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,649, issued on Oct. 27, was assigned to Eavor Technologies Inc. (Calgary, Canada).

"Method for thermal profile control and energy recovery in geothermal wells" was invented by Paul Cairns (Calgary, Canada), Matthew Toews (Calgary, Canada) and John Redfern (Los Angeles).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for controlling temperature maxima and minima from the heel to toe in geothermal well lateral sections. The method includes disposing at least a pair of wells proximately where thermal contact is possible. Working fluid is circulated in one well of the pair in one direction and the working fluid of the second well is circulated in...