高校地质学报2012，Vol.18Issue(3)：438-446,9.
鄂尔多斯盆地东缘构造-水文地质控气特征
Structural and Hydrogeological Controls of Coalbed Methane Preservation in the Eastern Ordos Basin
摘要
Abstract
Based on field investigation and data of borehole pumping test, the structure, hydrogeology and their controls to the coalbed methane (CBM) preservation in eastern margin of the Ordos basin were discussed. Results showed that the compression faults and folds with nearly south-north direction develop well in the basin margins, and the tectonic deformation weaken gradually towards the center of the basin, which indicates the structure both in the margin and center of the basin is all conducive to the CBM preservation. Five hydrological units in the area were distinguished based on the geomorphological and geological conditions such as the structure and groundwater recharge and discharge. Hydrodynamic in southwestern Hancheng unit is stronger than that in other units in the eastern, and that in the Liulin unit is strongest among the eastern units. Superposition of the hydrodynamic variation on the tectonic setting makes the differentiation of CBM preservation conditions. CBM content in middle Yellow River depression increases with the increase of the burial depth. Hydrodynamic favorable to CBM preservation in northern Liulin unit occurs at the western part of the Liulin Spring in the unit. Groundwater dynamic at the northern part of the Longmenshan unit may be favorable to CBM preservation. Good CBM preservation occurs in the northwest part of the Hancheng unit due to the stagnant groundwater.关键词
鄂尔多斯盆地/煤层气/构造/水文Key words
Ordos Basin/ coalbed methane/ structure/ hydrology分类
天文与地球科学引用本文复制引用
姜波,许进鹏,朱奎,汪吉林,王继尧,屈争辉,李明..鄂尔多斯盆地东缘构造-水文地质控气特征[J].高校地质学报,2012,18(3):438-446,9.基金项目
国家科技重大专项(2008ZX05034)资助项目 （2008ZX05034）
