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US 11,939,517 B2Granted
Porous polyurethane for consolidation of material in subterranean formations
AssigneeSaudi Arabian Oil Company
InventorsWenwen Li, Fakuen Frank Chang, Feng Liang
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Abstract
A method and a system for consolidating a subterranean formation are provided. An exemplary method includes injecting a water-in-oil emulsion into an unconsolidated subterranean formation, wherein the water-in-oil emulsion includes comonomers in an oil phase to form a polyurethane resin, and a catalyst in an aqueous phase. The method also includes allowing the polyurethane resin to cure to form a porous polymeric network.
Claims8
A method for consolidating a subterranean formation, comprising:
- injecting a water-in-oil emulsion into an unconsolidated subterranean formation, wherein the water-in-oil emulsion comprises comonomers in an oil phase to form a polyurethane resin, and a catalyst in an aqueous phase, and wherein the catalyst is added to the aqueous phase before mixing the aqueous phase into the oil phase;
- and
- allowing the polyurethane resin to cure to form a porous polymeric network;
- wherein the subterranean formation after consolidation has a permeability of from 0.010 Darcy to 10 Darcy.
1 more element
Dependencies are inferred from the claim text.