李玲;姚海鹏;李文华;吕伟波;斯琴毕力格;

• 1:内蒙古自治区煤田地质局

• 2:内蒙古自治区非常规天然气工程技术研究中心

• 3:内蒙古煤勘非常规能源有限责任公司

摘要(Abstract)：

为明确海拉尔盆地伊敏凹陷中低煤阶煤层气成藏富集条件,研究主力煤组的煤岩煤质、厚度、埋深、煤储层物性、含气性、顶板封盖性,以及水文地质条件,类比国内外中低煤阶成熟勘探区成藏地质条件,综合构造、煤储层分布、含气性、保存条件和水文地质条件,建立煤层气成藏模式,提出勘探选区建议。结果表明:伊敏凹陷西南部和中南部主力煤组(16号煤组、27号煤组)煤层厚度大,埋深适中,储层物性较好,顶板封闭性强,水文地质条件处于缓流区,适合煤层气富集成藏;研究区成藏条件与国内外中低煤阶成熟勘探区对比具有一定相似性,具备良好煤层气富集成藏基础,建立断层—地层封盖型热成因气和缓坡带晚期生物气型或混合型两种成藏模式,且前者优于后者;五牧场等地埋藏较深的大磨拐河组为煤层气勘探首选目标区,西南部埋藏较浅的大磨拐河组和伊敏组为煤层气勘探的第二选择。

关键词(KeyWords)：海拉尔盆地;伊敏凹陷;中低煤阶;煤层气成藏条件;类比分析;成藏模式

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2016ZX05041-003-002)

作者(Author):李玲;姚海鹏;李文华;吕伟波;斯琴毕力格;

Email:

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