Patent ID: 7723273
Filing Date: 2010-05-25
Classification: C04B,C08G,C08L,C09K,E21B

Abstract:
1. A composition for injection into an oil or gas well having a well bore and a well casing within the well bore, said composition comprising an epoxy component and a curing agent, said epoxy component present at a level of from about 70-97% by weight, said epoxy component including an epoxy resin and a glycidyl ether modifier different than said epoxy resin, said curing agent comprising an ethoxylated alkyl monoamine or diamine having a C10-C20 carbon alkyl chain, and a degree of ethoxylation of from about 0.1-30 moles of ethylene oxide per mole of alkyl monoamine or diamine, said curing agent being present at a level of from about 1.5-12% by weight, said weight percentages based upon the total weight of the composition on a solvent-free basis taken as 100% by weight, said composition operable to cure within said well upon said injection thereof at an elevated downhole bore temperature of from about 75-300° F. in order to create a cured, resilient body adjacent at least a portion of the well casing, said body having a compressibility of at least about 20% and a resiliency of at least about 60% at said elevated downhole bore temperature.