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1. 发明申请

WO2015058170A3 ALKALI METAL SILICIDES FOR HIGH TEMPERATURE WETTABILITY IMPROVEMENT IN CARBONATE RESERVOIRS 审中-公开
标题翻译：碱性金属硅化物改善碳酸盐岩储层的高温润湿性
公开(公告)号：WO2015058170A3
公开(公告)日：2015-10-29
申请号：PCT/US2014061273
申请日：2014-10-17
申请人： SIGNA CHEMISTRY INC
发明人： KRUMRINE PAUL H , LEFENFELD MICHAEL , ROMNEY GREGORY ARTHUR , IMRAN MUHAMMAD , KNORR KELVIN DEAN , JONASSON RALPH GEORGE
IPC分类号： E21B43/241
CPC分类号： E21B43/25 , C09K8/58 , C09K8/592 , C09K8/594 , E21B43/16 , E21B43/24 , E21B43/255
摘要： A process for altering a wettability characteristic of a carbonate formation to stimulate oil production includes selecting an oil bearing carbonate formation, injecting a silicide dispersion into the carbonate formation, and reacting the injected silicide dispersion with water. The reaction alters the wettability characteristic of the carbonate formation toward water wettability. The silicide dispersion can include an alkali metal silicide, such as sodium silicide. The reaction generates hydrogen, silicate, and heat that pressurizes the carbonate formation with the generated hydrogen, heats the carbonate formation with the generated heat, and reduces the viscosity of the hydrocarbons in the carbonate formation with the generated silicate. The reaction re-mineralizes the surfaces in the carbonate formation and alters the wettability characteristics of the carbonate formation as a calcium-silicon phase is formed. The hydrocarbons are recovered from the carbonate formation with a production well.
摘要翻译：一种改变碳酸盐岩层的润湿性特征以刺激石油生产的方法包括选择含油碳酸盐岩层，将硅化物分散体注入碳酸盐岩层中，以及使注入的硅化物分散体与水反应。该反应改变了碳酸盐岩层对水润湿性的润湿性特征。硅化物分散体可以包括碱金属硅化物，例如硅化钠。该反应产生氢气，硅酸盐和热量，其利用产生的氢气加压碳酸盐岩层，利用产生的热量加热碳酸盐岩岩层，并降低碳酸盐岩层中生成的硅酸盐的粘度。该反应使碳酸盐岩地层中的表面重新矿化，并在钙 - 硅相形成时改变碳酸盐岩层的润湿性特征。用生产井从碳酸盐岩地层中回收碳氢化合物。

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