US 12,454,482 B2
High thermal coefficient grout compositions and methods therefor
Piotr D. Moncarz, Palo Alto, CA (US); Daniel Bour, Granite Falls, WA (US); Gerald Fuller, Palo Alto, CA (US); Axel-Pierre Bois, Curis-au-Mont-d'Or (FR); Poodipeddi V. Suryanarayana, Plano, TX (US); and Mark McGilvray, Jr., Katy, TX (US)
Assigned to XGS Energy Inc., Palo Alto, CA (US)
Filed by XGS Energy, Inc., Palo Alto, CA (US)
Filed on Jul. 25, 2024, as Appl. No. 18/784,599.
Application 18/784,599 is a continuation of application No. PCT/US2023/061279, filed on Jan. 25, 2023.
Claims priority of provisional application 63/305,599, filed on Feb. 1, 2022.
Prior Publication US 2024/0400445 A1, Dec. 5, 2024
Int. Cl. C04B 7/02 (2006.01); C04B 7/32 (2006.01); C04B 103/20 (2006.01); C04B 111/70 (2006.01); E21B 33/13 (2006.01)
CPC C04B 7/02 (2013.01) [C04B 7/32 (2013.01); E21B 33/13 (2013.01); C04B 2103/20 (2013.01); C04B 2111/70 (2013.01); C04B 2201/32 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A high-thermal conductivity grout composition for heat transfer from a hot rock formation into a working fluid of a geothermal heat harvesting system for electrical or thermal energy generation, comprising:
a grout mixture comprising a cementitious material, a retarder, and a high-thermal k material;
wherein the retarder is present in an amount effective that delays setting of the grout mixture at a target location having a geostatic target temperature of at least 300° F. for at least two hours; and
wherein the high-thermal k material is present in an amount effective such that the grout mixture has, upon setting at the target location, a thermal conductivity of at least 10 W/m° K.