US 12,291,672 B2
Blowing agent incorporated resin systems for consolidating subterranean oil and gas bearing formations
Fakuen Frank Chang, Houston, TX (US); Wenwen Li, Pearland, TX (US); and Feng Liang, Houston, TX (US)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by ARAMCO SERVICES COMPANY, Houston, TX (US)
Filed on Dec. 14, 2021, as Appl. No. 17/644,119.
Prior Publication US 2023/0183556 A1, Jun. 15, 2023
Int. Cl. C09K 8/575 (2006.01); E21B 43/02 (2006.01)
CPC C09K 8/5755 (2013.01) [E21B 43/025 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A productive consolidated sand pack product, comprising:
a productive consolidated sand pack that contains a cured resin bound to sand particles having a porous structure that is obtained from curing of a resin treatment composition comprising a resin, a curing agent, a chemical blowing agent comprising a chemical ingredient or multiple chemical ingredients incorporated into the resin treatment composition that will generate a gas by an activation means, a carrier fluid, a surfactant, and optionally one or more of a pH adjusting agent, a second surfactant, and a salt,
wherein the resin is a curable epoxy resin and the curable epoxy resin has an epoxy equivalent weight of about 100 g to about 400 g, and
wherein the resin treatment composition comprises the curable epoxy resin in an amount in a range of 1 to 75 wt % and the curing agent in an amount in a range of 0.5 to 33 wt %,
where the productive consolidated sand pack includes one or more of trapped gas, bubbles, and open and connected pore space,
wherein the carrier fluid comprises a mixture of an aqueous based solution and an organic solvent selected from the group consisting of glycol ethers, ethylene glycol, dimethyl sulfoxide, dimethyl formamide, acetone, and methyl ethyl ketone, and
wherein including the organic solvent in the mixture disperses the chemical blowing agent within the resin.