【摘要】 随着勘探程度的提高,乌伦古坳陷多年来沿用的构造单元划分方案开始凸显其不适应性。文章对原方案存在的问题进行了剖析,根据近年来钻探和地震解释成果,提出了新的构造单元划分方案。新方案以中生代沉积构造背景为主要依据将乌伦古坳陷划分为红岩断阶带、索索泉凹陷和乌伦古南斜坡等3个二级构造单元。与原方案相比,新方案中乌伦古坳陷的面积有所扩大,斜坡带的界定使坳陷的形态及含油气差异性更趋合理。更多还原

【Abstract】 Based on the whole structural evolution in Wulungu depression,considering the differences in the structural evolution and petroliferous nature in each area,this report analyzes all the classification conceptions for the structural units and relevant comprehensive geologic reports and seismic profiles,and proposes a set of new and regular concept suitable for classification of the depression and regional structural units.Wulungu Depression are sub-classified in this report.The concept includes 3 Class-II units.In comparison with previous concepts,the east part of Sangequan sag is classified into the Wulungu depression.更多还原