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    • 109. 发明授权
    • Methods of using wellbore servicing compositions
    • 使用井筒维修组合物的方法
    • US07530395B2
    • 2009-05-12
    • US11691394
    • 2007-03-26
    • B. Raghava ReddyRickey Morgan
    • B. Raghava ReddyRickey Morgan
    • E21B33/138C04B7/32
    • C04B28/06C04B2111/00215C09K8/467Y02W30/92C04B18/08C04B22/085C04B22/124C04B22/16C04B24/06C04B24/163C04B24/2641C04B24/2688
    • A method of servicing a wellbore comprising placing in the wellbore a composition comprising a calcium aluminate cement and at least one gelation inhibitor, and allowing the composition to set. A method of servicing a wellbore comprising adjusting the thickening time of calcium aluminate cement by contacting the cement with a salt and a gelation inhibitor, wherein the gelation inhibitor comprises a copolymer comprising one or more sulfonated aromatic monomers and one or more acrylate monomers, placing the cement in the wellbore, and allowing the cement to set. A method of servicing a wellbore comprising preventing premature gelation of calcium aluminate cement by contacting the calcium aluminate cement with a gelation inhibitor comprising a copolymer, wherein the copolymer comprises alkylbenzene sulfonic acid, at least one methallyl sulfonic acid monomer, at least one copolymerizable nonionic monomer, and at least one copolymerizable olefinically unsaturated carboxylic acid monomer, placing the cement in the wellbore, and allowing the cement to set.
    • 一种维修井孔的方法,包括将井眼中的包含铝酸钙水泥和至少一种凝胶化抑制剂的组合物放置在井眼中,并使组合物凝固。 一种维修井孔的方法,包括通过使水泥与盐和凝胶化抑制剂接触来调节铝酸钙水泥的增稠时间,其中所述凝胶化抑制剂包括含有一种或多种磺化芳族单体和一种或多种丙烯酸酯单体的共聚物, 水泥在井眼中,并允许水泥固化。 一种维修井筒的方法,其包括通过使铝酸钙水泥与包含共聚物的凝胶抑制剂接触来防止铝酸钙胶泥的过早凝胶化,其中所述共聚物包含烷基苯磺酸,至少一种甲代烯丙基磺酸单体,至少一种可共聚的非离子单体 ,和至少一种可共聚的烯属不饱和羧酸单体,将水泥放置在井眼中,并允许水泥固化。