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煤层气多分支水平井的最新进展及发展趋势

Wen-li JIANG, Jiang-ping YE,De-wu QIAO

China Mining Magazine(2010)

Cited 10|Views10
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Abstract
多分支水平井是开采煤层气的重要手段.多适用于中、高煤阶煤层,煤层机械强度较高,力学性质稳定;地质条件要求埋深适中,煤层厚度适中,横向连续稳定分布,煤层中夹矸不发育,构造稳定,避开断层和破碎带.煤层气多分支水平井技术最主要的优点表现在,单井产气量高、采收率高、生产周期短、井场占地面积少.不同地质条件需采用不同井型多分支水平井,其经济效益与社会效益不同.
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Key words
coalbed methane,coalbeds,Multi-branch horizontal well
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