新疆准南某井田煤层气资源评价及有利区优选

CBM Resource Evaluation and Favorable Area Analysis in A Well Field of Southern Junggar in Xinjiang Province

在分析准南某井田的煤层结构、煤层物性及含气性的基础上,对该区煤层气资源特征进行了评价并优选了有利含气区。结果表明,该井田主力煤层厚度稳定、埋深适中且含气量较高,适合进行煤层气开采;同时主力煤层割理裂隙发育,适合压裂增产改造。井田总体属于中型、高丰度、高产能煤层气田,可分为西部构造缓倾区和东部构造陡倾区两个有利煤层气开发区。

On the basis of analyzing the coal structure,physical properties and gas-bearing properties in a well field of Southern Junggar,the characteristics of CBM resources in this area are evaluated and the favorable gas-bearing areas are optimized. The results show that the main coal seams in the studied area is stable in thickness,moderate in depth,and high in gas content,which is suitable for CBM development. The cleat fractures in the coal seams are well developed,which is favorable for fracturing. The studied area is generally a medium-sized,high abundance and high-yielding CBM field,which can be divided into two favorable areas： western structurally gentle area and eastern structurally steep area.