中国石油大学学报（自然科学版）2017，Vol.41Issue(5)：1-8,8.DOI:10.3969/j.issn.1673-5005.2017.05.001
车排子地区石炭系挤压逆冲构造区断层共生裂缝发育程度定量表征
Quantitative characterization of development degree of fault-related fracture in compressional thrust structure block of the Carboniferous in Chepaizi area
摘要
Abstract
Under the multi-phase compressional thrust structure setting in Chepaizi area, Junggar Basin, a large amount of fractures associated with local fault systems were formed within the Carboniferous volcanic rock. Using a comprehensive anal-ysis of core, thin sections, image logs and seismic profiles data, a quantitative characterization and prediction of fault-related fracture development in Carboniferous of Chepaizi area was performed. The results show that the high angle shearing fractures and tensional fractures are the main types in Carboniferous. The fracture parameters, such as direction, dip angle, density, and opening width are closely correlated with the fault. Based on the derived fault-control fracture density function, the fault grades of the study area can be divided intoⅠ, Ⅱ, and Ⅲ,with the effective control distancesas 5. 5, 3. 0 and 0. 9 km,re-spectively. A quantitative analysis of fault strength was also conducted, mainly using statistical and analytic methods to trans-form the regional fault information into the fracture information, resulting in a detailed description and a quantitative charac-terization of fault-related fracture development in the Carboniferous of Chepaizi area.关键词
挤压逆冲构造/断裂级别/裂缝密度/定量表征/车排子地区Key words
compressional thrust structure/fault grade/fracture density/quantitative characterization/Chepaizi area分类
能源科技引用本文复制引用
杨少春,牛海瑞,宋明水,赵永福,汪勇..车排子地区石炭系挤压逆冲构造区断层共生裂缝发育程度定量表征[J].中国石油大学学报（自然科学版）,2017,41(5):1-8,8.基金项目
国家科技重大专项(2017ZX05009001) （2017ZX05009001）
