临兴地区深部煤层气及致密砂岩气资源潜力评价
Coal Science and Technology(2015)
Abstract
针对鄂尔多斯盆地东缘临兴地区主煤层埋深较深、致密砂岩产气层数较多的特点,分析了区内煤储层特征,评价了深部煤层气及致密砂岩气的资源潜力.研究表明,区内构造简单,以单斜构造为主,东中部局部地区发育断裂,煤储层相对稳定,储层压力呈欠压-常压状态,有利于煤层气的富集;深部5号和9号煤层以半亮型的肥煤到焦煤为主,储层物性较好,且9号煤层资源潜力较大,是深部煤层气勘探的主要煤层;致密砂岩展布主要受控于煤系地层沉积特征,在北部地区相对发育.研究认为,该区有利于深部煤系煤层气与致密砂岩气多层共采,而中南部地区为煤层气单采有利区.
MoreKey words
potential resources,coal reservoir,deep seam,coalbed methane,compact sandstone gas
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