Patent ID: 8387695
Filing Date: 2013-03-05
Classification: C04B,C09K,E21B

Abstract:
1. A method of cementing a well comprising pumping a suspension comprising: (1) a filler mixture; (2) at least about 5 weight percent of a thermosetting resin selected from the group consisting of polyester resin, a vinyl ester resin, and mixtures thereof based on the total weight of resin and filler mixture; and mixing a catalyst with the suspension wherein the suspension cures when said catalyst is mixed with the suspension and wherein the cured composition comprises one or more of the following characteristics: (a) a tensile strength of at least about 30 psi according to ASTM C1273 with a 0.01 inch/min of cross-head speed at ambient 25C at 50% humidity; (b) a compression strength of at least about 1500 psi according to ASTM C873 with a 0.01 inch/min of cross-head speed at ambient 25C at 50% humidity; (c) a flex strength of at least about 500 psi according to ASTM C873 with a 0.01 inch/min of cross-head speed at ambient 25C at 50% humidity; (e) a fracture toughness of at least about 0.3 Mpa root meter according to ASTM C1421; (f) a ratio of tensile strength to compressive strength of at least about 10% wherein the tensile strength is measured according to ASTM C1273 with a 0.01 inch/min of cross-head speed at ambient 25C at 50% humidity and the compression strength is measured according to ASTM 873 with a 0.01 inch/min of cross-head speed at ambient 25C at 50% humidity; and (g) a flex fatigue resistance such that the cured composition can be subjected to a stress of 50% of the cured composition's ultimate failure strength for at least 1000 cycles without breaking.