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US 12,291,672 B2Granted
Blowing agent incorporated resin systems for consolidating subterranean oil and gas bearing formations
AssigneeSaudi Arabian Oil Company
InventorsFakuen Frank Chang, Wenwen Li, Feng Liang
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Abstract
One or more embodiments relates to a productive consolidated sand pack product. The sand pack product may be a cured resin that is bound to sand particles and has a porous structure. The sand pack product is obtained from curing a resin composition which may include a resin, a curing agent, a chemical blowing agent, a surfactant, a carrier fluid, a pH agent, and a salt. The porous volume may include one or more of trapped gas, bubbles, and open or connected pore space.
Claims12
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.
3 more elements
Dependencies are inferred from the claim text.