摘要
走滑断裂及其控藏规律已经成为油气勘探的热点,但不同类型走滑断裂内部结构单元、输导特征及其控藏规律,目前还不甚清楚.通过野外精细表征、物理模拟实验和典型实例剖析,揭示走滑断裂内部结构及其控藏特征:走滑断裂内部结构包括断层核、其两侧的滑动破碎带和诱导裂缝带3个单元5个带;张扭性走滑断裂的断层核输导性最好、其次是滑动破碎带,再次是诱导裂缝带;压扭或纯扭性走滑断裂的断层核封闭性最好,其次是诱导裂缝带,滑动破碎带输导性最好.张扭性走滑断裂纵横向输导性要好于压扭和纯扭性走滑断裂,主动盘输导性好于被动盘,活动时期的输导性好于静止时期.走滑断裂的主动盘以输层油气垂向运移为主、被动盘以横向遮挡油气为特征.构建了准噶尔盆地吉木萨尔凹陷西部走滑断裂的控藏模式.
Strike-slip faults and their reservoir-controlling rules have become the focus of oil and gas exploration,but the internal structural units,transport characteristics and reservoir-controlling rules of different types of strike-slip faults are still unclear.Through detailed fields characterization,physical simulation experiments and typical case analysis,the internal structure of the strike-slip fault and its reservoir control characteristics are revealed.The internal structure of the strike-slip fault includes three units and five zones,including the fault core,the sliding fracture zone on both sides and the induced fracture zone.The fault core of tension-shear strike-slip fault has the best transport,followed by the slip fracture zone and the induced fracture zone.The fault core of compressional or pure torsional strike-slip fault has the best sealing property,followed by induced fracture zone and slip fracture zone.The longitudinal and horizontal transport of tension-shear strike-slip faults is better than that of compression-torsional and pure torsional strike-slip faults.The transport of active disks is better than that of passive disks.The transport of active disks is better than that of static faults.The active disk of the strike-slip fault is characterized by vertical migration of oil and gas in the transport layer while the passive disk is characterized by transverse blocking of oil and gas.The reservoir controlling model of the western strike-slip fault in Jimsar sag,Junggar basin was constructed.
作者
罗群
王千军
杨威
王耀华
许倩
张子隆
邱兆轩
Luo Qun;Wang Qianjun;Yang Wei;Wang Yaohua;Xu Qian;Zhang Zilong;Qiu Zhaoxuan(State Key Laboratory of Petroleum Resources and Prospecting,Beijing 102249,China;Institute of Unconventional Oil and Gas Science and Technology,China University of Petroleum,Beijing 102249,China;Research Institute of Exploration and Development,SINOPEC Shengli Oilfield Company,Dongying 257000,China)
出处
《地球科学》
EI
CAS
CSCD
北大核心
2023年第6期2342-2360,共19页
Earth Science
基金
中国石油-中国石油大学战略合作科技专项课题(No.ZLZX2020⁃01⁃6)
胜利油田技术项目(No.30200018⁃20⁃ZC0613⁃0104)
大港油田科技项目(No.2021DJ0702⁃1).
关键词
走滑断裂
内部结构
渗透性
输导
遮挡
控藏模式
石油地质.
strike-slip fault
internal structure
permeability
transmissibility
shield
control accumulation mode
petroleum geology.
