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Compositions and methods for water shut-off in subterranean wells
Compositions and methods for water shut-off in subterranean wells
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机译:地下井中的堵水组合物和方法
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摘要
A fluid system and method to control downhole water problems in oilfield applications are provided. The system includes a sodium silicate solution and a hardener that is added just prior to pumping downhole in a single stage treatment. The hardener may be one or more esters such as dimethyl succinate, dimethyl glutarate, and/or dimethyl adipate. Permanent lost circulation control may be provided by the consequent silica gel formed. Once the treatment is placed, a specified amount of time can be adjusted to meet the needs of the well parameters.
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