摘要
在准噶尔盆地车排子地区多期挤压逆冲构造背景下,石炭系火山岩断裂伴生大规模构造裂缝。综合利用岩心、薄片、成像测井和地震等资料,对车排子地区石炭系断层共生裂缝的发育程度进行定量化表征及预测。研究结果表明:与逆断层伴生的高角度剪切缝和扩张裂缝是石炭系发育的主要裂缝类型,构造裂缝的走向、倾角、密度及张开度等参数与断层密切相关;研究区断裂级别可划分为Ⅰ~Ⅲ级,通过建立断层共生裂缝密度分布函数,得出3类断层对裂缝发育的控制范围分别为5.5、3.0、0.9 km。在充分考虑不同级别断层对裂缝发育控制作用的基础上,采用统计和回归分析的方法定量分析石炭系断裂强度,通过全区断裂信息维到裂缝信息维的转换,最终实现对车排子地区石炭系断层共生裂缝发育程度的精细刻画和定量表征。
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 analysis 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,andⅢ,with the effective control distancesas5.5,3.0and0.9km,respectively.A quantitative analysis of fault strength was also conducted,mainly using statistical and analytic methods to transform the regional fault information into the fracture information,resulting in a detailed description and a quantitative characterization of fault related fracture development in the Carboniferous of Chepaizi area.
作者
杨少春
牛海瑞
宋明水
赵永福
汪勇
YANG Shaochun;NIU Hairui;SONG Mingshui;ZHAO Yongfu;WANG Yong(School of Geosciences in China University of Petroleum, Qingdao 266580, China;Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology,Qingdao 266071, China;SINOPEC Star Shandong New Energy Coompany Limited, Dongying 257000, China;Management Center of Oil and Gas Exploration, SINOPEC Shengli Oilfield, Dongying 257017, China)
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2017年第5期1-8,共8页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家科技重大专项(2017ZX05009001)
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
compressional thrust structure
fault grade
fracture density
quantitative characterization
Chepaizi area
