延川南地区煤层气资源潜力分析

延川南地区是鄂尔多斯盆地石炭-二叠系含煤系的主要分布区，本文通过研究延川南地区的主力煤层厚度、埋深、煤岩煤质特征及演化程度、煤层吸附性、煤储层物性及含气性、煤层气保存条件等因素，认为延川南地区煤层层数多、主力煤层厚度大、储层含气量高、顶底板封盖性能好、构造简单等特点，具有很好的煤层气富集成藏条件，是中高煤阶煤层气勘探有利目标区。并通过与已获得较好煤层气勘探开发先导试验效果的大宁-吉县和韩城地区的对比。认为延川南地区具有较高的煤层气勘探开发潜力。

Analysis of Potentials of CBM Resources in Yanchuannan Region

Yanchuannan is a region where Ordos Basin of Permo-carboniferous period is mainly distributed. Based on study on many factors of the major coal seams in Yanchuannan region, such as thickness, burial depth, petrographical and coal quality characteristics, degree of evolution, adsorption of coal seams, physical properties and gas content of coal reservoir, and CBM retention conditions, the paper holds that yanchuannan region is a favorable target zone of moderate and high rank CBM for exploration, because of large number of coal seams, great thickness of major coal seams, high gas content of reservoir, good capping capacity roof and floor and simple structure, etc. and that it has good conditions for CBM enrichment and for forming reservoir. Based on comparison of the pilot test results of CBM exploration obtained in Da-Ning-Jixian and H_ancheng, it is considered that Yanchuannan region has high potentials for CBM exploration and development.