沁水盆地沁源区块煤层气勘探开发有利区预测研究

Prediction of favorable areas for CBM exploration and development in Qinyuan block of Qinshui basin

沁源区块山西组2号煤层、太原组9+10号煤层整体埋深大于1000 m、单煤层厚度较薄,勘探程度较低。为使沁源区块早日获得勘探突破,本文从构造分区研究入手,分析主力煤层厚度、含气性、埋深等重要勘探开发指标,阐明了单煤层勘探有利区,并利用多煤层叠合的方法,同时考虑后期开发的可行性,得出沁源区块整体勘探开发有利区,为该区块下一步勘探工作奠定了基础。

No.2 coal seam of Shanxi Formation and No.9+10 coal seam of Taiyuan Formation in Qinyuan block have overall buried depth of more than 1000 m,single coal seam thickness is relatively thin and exploration degree is relatively low.In order to make an early breakthrough in exploration in Qinyuan block,this paper analyzes the important exploration and development indexes such as the thickness,gas content and burial depth of the main coal seam.The paper obtains the favorable exploration area of single coal seam,and using the method of multi-seam superposition and considering the possibility of later development,the favorable exploration and development area of Qinyuan block is obtained.At the same time,it laid a foundation for the future exploration work in this block.