东濮凹陷及其邻区下古生界碳酸盐岩储集层特征及其控制因素分析

CHARACTERISTICS AND CONTROL FACTORS ANALYSIS OF LOWER PALEOZOIC CARBONATE RESERVOIR IN THE DONGPU DEPRESSION AND ITS NEIGHBOR REGIONS

分析了东濮凹陷及邻区下古生界碳酸盐岩储集层的特征及控制因素 ,并通过与任丘潜山和鄂尔多斯盆地古风化壳的对比 ,指出成岩演化、沉积相带、构造应力作用等是控制本区下古生界储集层发育的关键因素。本区发育潜山和古风化壳两种类型的风化壳储层。东濮凹陷南部—中牟凹陷与鄂尔多斯地区奥陶系成岩演化历史、沉积相带相似 ,古风化壳储层发育 。

The characteristics and control factors of Lower Paleozoic carbonate reservoir in the Dongpu depression and its neighbor regions are analysed systematically in this paper. As comparied with Renqiu buried hills and palaeocrust of weathering in the Ordos Basin,the authors point out that the key factors of controlling the Lower Paleozoic reservoir in the area are diagegtic evolution,sedimentary facies and structural stress. There are two kinds of well developed crust reservoirs of weathering in the area:buried hills and palaeocrust of weathering.Being near to the Paleozoic and Mesozoic hydrocarbon generating center and having well developed paleocrust reservoir of weathering,the south part of the Dongpu depression to the Zhongmou depression,with similar Ordovician diagenetic evolution and sedimentary facies to the Ordos Basin,is the favorable hydrocarbon exploration region for carbonate rock in the area.