鄂尔多斯盆地镇原-泾川地区三叠系延长组构造裂缝分布定量预测

根据露头地层、钻井岩心、岩石薄片等对构造裂缝进行了详细观测统计,分析了镇原-泾川地区三叠系延长组储层构造裂缝的基本特征、力学构成和成因。以研究区目的层构造裂缝的实际情况为依据,以有限元数值模拟方法为基础,应用岩石破裂法,对延长组构造裂缝分布和发育程度进行了初步定量预测研究,为鄂尔多斯盆地镇原-泾川地区石油勘探提供了有利区评价依据。 

QUANTITATIVE PREDICTION OF DISTRIBUTION OF TECTONIC FRACTURES IN THE YANCHANG FORMATION IN THE ZHENYUAN-JINGCHUAN AREA, ORDOS BASIN

Detailed observations and statistics of tectonic fractures in outcrops, drilling cores and thin sections have been made and the basic characteristics, mechanics and origin of tectonic fractures in reservoirs of the Triassic Yanchang Formation in the Zhenyuan-Jingchuan area have been analyzed. According to the actual conditions of tectonic fractures in the target strata in the Zhenyuan-Jingchuan area and on the basis of finite element simulation, the authors have quantitatively predicted and evaluated the distribution and development degree of the tectonic fractures by using the rock breaking method, which may be used as a reference for evaluation of a favorable target area in petroleum exploration in the Zhenyuan-Jingchuan area.