断陷盆地边界断裂结构特征及物性差异定量评价——以车镇凹陷埕南断裂为例  

The development of fault zone architecture of deep buried boundary faults in the rift basin:A case from the Chengnan Fault of the Chezhen depression

作　　者：杜彦男 吴孔友[1] 刘寅[1] 林红梅[3] 党思思 李彦颖 徐进军 Du Yannan;Wu Kongyou;Liu Yin;Lin Hongmei;Dang Sisi;Li Yanying;Xu Jinjun(School of Geoscience,China University of Petroleum,Qingdao,266580,China;Drilling Technology Research Institute of Shengli Petroleum Engineering Corporation Limited,SINOPEC(SLDTI)Dongying,257000,China;Research lnstitute of Petroleum Exploration and Development,Shengli Oilfield Company Ltd.,SINOPEC,Dongying,257015,China;Luliang Oil Field Operation Area,Xinjiang Oilfield Branch,Petro China,Karamay,834000,China)

机构地区：[1]中国石油大学(华东)地球科学与技术学院,青岛266580 [2]中石化胜利石油工程有限公司钻井工艺研究院,东营257000 [3]中国石化胜利油田分公司勘探开发研究院,东营257015 [4]中国石油新疆油田分公司陆梁油田作业区,克拉玛依834000

出　　处：《南京大学学报（自然科学版）》2020年第3期405-417,共13页Journal of Nanjing University（Natural Science）

基　　金：国家科技重大专项(2017ZX05001003);中国科学院先导科技A类专项(XDA14010301);山东省自然科学基金(ZR2017BD036)。

摘　　要：利用地震、测井、岩心以及物性测试数据等资料,从断裂规模和断层生长连接分段性特征入手,分析了埕南断裂构造发育特征及分段性,精细划分了埕南断裂不同段的断裂带结构及差异性,对比了不同断裂带结构单元物性差异性.研究认为:(1)埕南断裂在车西洼陷内具有明显的分段性构造发育特征,可划分为北西向、北西西向、北东向和北东东向四个走向段,其中北西向和北西西向段断裂呈板式,所控洼陷内断裂发育稀疏,北东向和北东东向段断裂呈铲式或坡坪式,所控洼陷内断裂发育密集,构造样式丰富;(2)埕南断裂内部结构发育较为完整,断裂带结构在深浅测向、井径、密度、声波时差和补偿中子测井曲线上具有良好的可识别性;(3)断裂的生长连接过程与断裂带各结构单元厚度变化具有一定的相关性,在落差较大的走向分段上,断裂带各结构单元发育厚度更大,而在各走向段连接点处,断裂带各结构单元厚度较小;(4)各结构单元物性差异明显,诱导裂缝带孔渗性高于围岩,诱导裂缝带孔渗性高于滑动破碎带1~2个数量级.综合研究表明,断裂带结构的发育对流体输导起到重要的控制作用.Based on the data of seismic,well logging,drill core and physical property,we analyzed the structural characteristics,internal architecture and physical properties of different structural components of each segments of the Chengnan Fault.The results show that:(1)the Chengnan Fault can be dividied into four segments based on the strike of the fault,including the NW,NWW,NE and NEE segments.Among these segments,the fault planes of the NW and NWW segments shows planner shape with less faults developed inner corresponding areas,however,the fault planes of the NE and NE segments show as listric shape in the profile with the faults highly developed in the corresponding area of the Chexi Depression;(2)the internal architecture of the Chengnan Fault is highly developed,different types of well logs are used to identify the different internal components of the Chengnan Fault,including the deep and shallow laterologs,well diameter,density,acoustic log and compensated neutron logging curves;(3)the thickness of each structural components of the fault zone is controlled by the fault growth and linkage processes,and in the segment with large drop,the thickness of each structural unit of the fault zone is larger,while in the joint point of each strike segment,the thickness of each structural unit of the fault zone is smaller;(4)the physical properties of each components of the fault zone are quite different,the porosity and permeability of the damage zone is higher than that of protolith rocks,and it also has 1~2 orders of magnitude higher than that of the fault core.Our studies reflect that the internal architecutre of the fault zone can affect the migration of the fluids.

关 键 词：断裂分段 断裂带结构 断裂带物性特征 车西洼陷 

分 类 号：P548[天文地球—构造地质学] TE121[天文地球—地质学]