摘要
依据陆相层序地层在地震剖面、电测曲线和岩石组合类型等方面的特征,将孔南地区孔店组地层划分出了2个二级层序、4个三级层序,其中各层序又可划分为3个体系域。并结合研究区构造特点,总结了本区不同层序界面的类型,其中区域性的角度不整合为二级层序边界,局部构造不整合和沉积-构造不整合则为三级层序边界。根据层序和沉积特点,初步分析了不同层序各体系域储层特点,并预测了不同层序体系域的油气圈闭类型。
Based on the characters of terrestrial sequence stratigraphy showed from seismic section, electric logging curves and types of rock association, the Kongdian Formation in the downthrow block of Kongdong Fault of Kongnan area can be divided into two second order sequences and four third order sequences, and three system tracts can be identified in each sequence. Combined with the structure characters, the types of different sequence boundaries are summed up. It concludes that the territorial angle unconformity is second order sequence boundary and the local structural unconformity and sedimentary- structural unconformity are third-order sequence boundary. On the basis of the characters of sequence and sedimentary, the reservoir distribution characters of each system tract of different sequences are analyzed preliminarily, and also the oil and gas reservoir types are predicted accordingly.
出处
《内蒙古石油化工》
CAS
2008年第5期134-137,共4页
Inner Mongolia Petrochemical Industry
关键词
孔南地区
层序地层格架
体系域
层序界面
Kongnan area
sequence stratigraphic framework
system tract
sequence boundary
