US 11,981,864 B1
Temporary isolation system for reservoirs
Mohamed Dawara, Tomball, TX (US); Robert Comer, Tomball, TX (US); Julio R. Gomez, Cypress, TX (US); Naima Bestaoui-Spurr, The Woodlands, TX (US); Kimberly Spurlock-Lant, The Woodlands, TX (US); Ahmed Shehata, Houston, TX (US); Camilo Andres Franco Ariza, Medelin.Antioquia (CO); Samira Heidari, Shiraz (IR); and Farid Bernardo Cortes Correa, Medelin.Antioquia (CO)
Assigned to Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed by Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed on Feb. 22, 2023, as Appl. No. 18/112,895.
Int. Cl. C09K 8/68 (2006.01); C09K 8/70 (2006.01)
CPC C09K 8/706 (2013.01) [C09K 8/685 (2013.01); C09K 2208/10 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method of stimulating a subterranean formation penetrated by a geothermal well, the method comprising:
(a) introducing into the well a first aqueous fluid comprising:
(i) nanoparticles;
(ii) a polyacrylamide having a weight average molecular weight from about 1.5 million to 22 million Dalton; and
(iii) an encapsulated liquid crosslinking agent
(b) gelling the aqueous fluid and forming a plug in a targeted zone within the formation wherein the plug constitutes a fluid impermeable barrier over a period of one hour to two weeks at a downhole temperature of 125° C. to 350° C.;
(c) pumping one or more second fluids into the geothermal well; and
(d) diverting flow of the one or more second fluids from the targeted zone to one or more second zones, wherein a permeability of the targeted zone is higher than a permeability of the one or more second zones.