US 11,674,504 B2
Geothermal loop energy production systems
Mark P. Muir, Emeryville, CA (US); and Alan D. Eastman, Emeryville, CA (US)
Assigned to GreenFire Energy Inc., Emeryville, CA (US)
Filed by GreenFire Energy Inc., Emeryville, CA (US)
Filed on Jun. 12, 2020, as Appl. No. 16/900,248.
Application 16/900,248 is a division of application No. 15/318,606, abandoned, previously published as PCT/US2015/035573, filed on Jun. 12, 2015.
Claims priority of provisional application 61/997,904, filed on Jun. 13, 2014.
Prior Publication US 2020/0309101 A1, Oct. 1, 2020
Int. Cl. F03G 7/04 (2006.01); E21B 47/07 (2012.01); F24T 10/10 (2018.01); E21B 47/06 (2012.01); E21B 47/09 (2012.01); E21B 49/00 (2006.01); E21B 7/04 (2006.01)
CPC F03G 7/04 (2013.01) [E21B 47/06 (2013.01); E21B 47/07 (2020.05); E21B 47/09 (2013.01); E21B 49/003 (2013.01); F24T 10/10 (2018.05); E21B 7/04 (2013.01); F24T 2201/00 (2018.05); Y02E 10/10 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of producing geothermal energy, comprising:
disposing two or more closed-loop pipe systems within a geologic formation at targeted locations having different heat flow characteristics to form a tiered or stacked loop energy system, wherein each of the two or more closed-loop pipe systems comprises an injection well, a production well spaced a distance from the injection well, and a horizontal well fluidly coupling the injection well to the production well,
wherein the disposing of at least one of the two or more closed-loop pipe systems comprises targeting un-stimulated convection areas of the geologic formation, and wherein the method does not comprise stimulating the formation;
harvesting energy from the geologic formation via the two or more closed-loop pipe systems;
converting the harvested energy via a conversion system configured to utilize the two or more closed-loop pipe systems.