Curable hybrid chemical resin for sand consolidation
AssigneeSaudi Arabian Oil Company
InventorsWenwen Li, Fakuen Frank Chang, Feng Liang
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Abstract
A treatment fluid composition includes a carrier fluid and a curable hybrid resin. The curable hybrid resin includes a first curable resin (A) including a reactive silyl group that reacts with water downhole, a second curable resin (B), and a curing agent for the second curable resin (B). A method of treating a subterranean formation includes injecting a treatment fluid including a curable hybrid resin into a target zone of the subterranean formation. The target zone may have unconsolidated or weakly consolidated sand. The method then includes maintaining the treatment fluid in the target zone for a period of time such that the curable hybrid resin cures and forming a consolidated formation in the target zone.
Claims17
A treatment fluid composition comprising:
- a carrier fluid, wherein the carrier fluid is an oil-based fluid selected from the group consisting of crude oil, base oil, aliphatic hydrocarbons, aromatic hydrocarbons, kerosene, naphtha, diesel, and combinations thereof, wherein the carrier fluid is present in an amount of 40 to 95 wt % of the total treatment fluid composition;
- and
- a curable hybrid resin, wherein the curable hybrid resin comprises a first curable resin (A), a second curable resin (B), and a curing agent for the second curable resin (B), wherein the first curable resin (A) comprises a reactive silyl group that reacts with water downhole, wherein first curable resin (A) has a main chain polymer selected from the group consisting of polyether, polyurethane, polyacrylate, polyester, polycarbonate, or combinations thereof, and wherein the second curable resin (B) comprises an epoxy resin.
A method of treating a subterranean formation comprising:
- injecting a treatment fluid comprising a carrier fluid and a curable hybrid resin into a target zone of the subterranean formation, wherein the target zone has unconsolidated or weakly consolidated sand;
- wherein the carrier fluid is an oil-based fluid selected from the group consisting of crude oil, base oil, aliphatic hydrocarbons, aromatic hydrocarbons, kerosene, naphtha, diesel, and combinations thereof, wherein the carrier fluid is present in an amount of 40 to 95 wt % of the total treatment fluid composition;
- and
- wherein the curable hybrid resin comprises a first curable resin (A), a second curable resin (B), and a curing agent for the second curable resin (B), wherein the first curable resin (A) comprises a reactive silyl group that reacts with water downhole, wherein first curable resin (A) has a main chain polymer selected from the group consisting of polyether, polyurethane, polyacrylate, polyester, polycarbonate, or combinations thereof, and wherein the second curable resin (B) comprises an epoxy resin;
- and
- maintaining the treatment fluid in the target zone for a period of time such that the curable hybrid resin cures;
- and
- forming a consolidated formation in the target zone.
Dependencies are inferred from the claim text.