摘要
对沁水盆地和顺区块13口煤层气参数井和32口煤田钻孔的含气量实验数据统计分析,发现单井含气量普遍变化较大,煤的灰分产率控制了单井15号煤层含气量的变化。1 000 m以浅太原组15号煤层单井平均含气量分布与煤层埋深相关关系不明显,受构造陡坡带影响较大;深部随埋深加深,含气量有增大的趋势。陡坡带、顶板泥岩和煤层厚度共同控制15号煤层含气量平面上的变化。
It is found that gas content of 15# coal seam changes obviously and coal ash content controls the changes of gas content of 15# coal seam by analyzing the gas content of 13 CBM parameter wells and 32 coalfield drilling in Heshun block of Qinshui basin. Above 1 000 meters, the relationship of average gas content distribution and coal seam depth is not obvious. The gas content is greatly impacted by tectonic steep slope zone. Apart from this, the deeper the coal seam depth is, the greater the gas content will be. Steep slope zone, thickness of roof mudstone and coal seam control the lateral change of gas content of 15# coal seam together.
出处
《油气藏评价与开发》
2013年第2期66-70,共5页
Petroleum Reservoir Evaluation and Development
基金
国家科技重大专项"物探技术在煤层气勘探开发中的应用"(2011ZX05035006)
关键词
含气量
分布特征
灰分产率
陡坡带
埋深
煤层顶板
gas content, distribution characteristics, ash content, steep slope zone, depth of coal seam, coal roof
