摘要
准噶尔盆地车排子地区石炭系火山岩储层裂缝发育,利用岩心、薄片、常规测井资料和成像测井资料,分析研究区不整合结构特征和各结构层的裂缝发育特征。结果表明,车排子地区石炭系顶面不整合各结构层发育,自上而下依次为不整合面之上的岩石、风化黏土层、水解层、淋滤层、崩解带Ⅰ、崩解带Ⅱ,不整合面下各结构层的裂缝发育特征具有明显差异,裂缝充填程度由低到高为淋滤层、水解层、崩解带Ⅰ、崩解带Ⅱ;裂缝发育由好到差为淋滤层、崩解带Ⅰ、崩解带Ⅱ、水解层;结构层内裂缝发育特征与火山岩岩性、风化淋滤作用和充填作用有关,玄武岩、安山玄武岩等裂缝发育程度较高的火山岩,在淋滤层和崩解带Ⅰ所占比例较大;淋滤层内,黏土化作用弱于风化淋滤作用,因此淋滤层裂缝发育程度最好。
The fractures of volcanic rock are studied in the Carboniferous Chepaizi area of Junggar Basin.Using drilling cores,thin section,conventional logging and image logging,the characteristics of the structural unconformity and the characterization of fracture in each structure are statistically analyzed.The results show that the structure of the Carboniferous top unconformity has a six-layer structure,which includes overlying rock,soil layer,hydrolysis zone,leached zone,brokendown zone I,and broken-down zoneⅡfrom top to bottom.Under the unconformity,the characterization of the fractures in individual structures differs.The degree of fracture filling increases gradually from the leached zone,the hydrolysis zone,the broken-down zone I,to the broken-down zoneⅡ.The fracture development is the best in the leached zone,but downgrades gradually from the broken-down zoneⅠ,the broken-down zone II,to the hydrolysis zone,respectively.The characterization of the fractures in the structure is clearly related to volcanic rock,weathered leaching and argillazation.Basalt and andesitic basalt have well developed fractures,and account for a large proportion in the leached zone and the broken-down zone I.Argillazation is less developed than weathered leaching in leached zone,where fractures are well developed.
作者
杨少春
何妮茜
宋明水
牛海瑞
欧阳黎明
YANG Shaochun;HE Niqian;SONG Mingshui;NIU Hairui;OUYANG Liming(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 Fuling Chongqing Shale Gas Exploration and Development Company Limited,Chognqing 408000,China;SINOPEC Shengli Oilfield Company,Dongying 257017,China;SINOPEC Star Shandong New Energy Company Limited,Dongying 257000,China)
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2018年第2期1-9,共9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
不整合结构
裂缝
火山岩
车排子地区
石炭系
unconformity structure
fracture
volcanic rock
Chepaizi area
Carboniferous
作者简介
杨少春(1962-),男,教授,博士,博士生导师,研究方向为油气地质及油藏描述。E-mail:scyang@upc.edu.cn.;通讯作者:何妮茜(1994-),女,硕士,研究方向为油气藏开发地质。E-mail:heniqian_2010@163.com。
