多参数评价准噶尔盆地车莫古隆起北部断层封闭性  

Multi parameter evaluation of fault sealing of northern part ofChemo Plaeo-uplift in Junggar Basin

作　　者：赵世豪 张奎华[2] 吴孔友[1] 李彦颖 Zhao Shihao;Zhang Kuihua;Wu Kongyou;Li Yanying(School of Geosciences,China University of Petroleum(East China),Qingdao 266580,China;Exploration and Development Research Institute,Sinopec Shengli Oilfield Branch,Dongying 257015,China)

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]中国石化胜利油田分公司勘探开发研究院,山东东营257015

出　　处：《能源与环保》2024年第9期120-126,132,共8页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金面上项目(42272155)。

摘　　要：车莫古隆起北部地区在侏罗系中相继发现了一系列断块油气藏,断层封闭性的好坏控制了研究区油气的生成和聚集。为了研究多类型断层封闭能力,利用地震、测井等资料,采用断面正应力、断面紧闭指数、泥质含量和泥岩削刮比等参数,针对不同性质的断裂优选多种参数组合方式,开展断层封闭性评价,结合3Dmove软件虚拟井法进行封闭性分析,最后运用模糊数学评价方法得到综合评价指标,总结影响断层封闭能力的各种因素,预测有利断层。研究结果表明,车莫古隆起北部地区断层封闭性中等偏差,其中,现今封闭性好于成藏期。断层封闭能力主要受走向、规模以及泥岩与砂岩的厚度影响,与断面正压力无明显关系。沙窝地地区断层封闭性好于莫西庄地区,庄北地区断层封闭性最差。通过多种方法综合研究车莫古隆起北部断层封闭性,对预测有利断层、寻找油气富集的断块油气藏具有重要意义。A series of fault block oil and gas reservoirs have been discovered in the Jurassic system in the northern part of Chemo Plaeo-uplift,and the production and accumulation of oil and gas are controlled by the fault sealing.In order to study the sealing ability of multiple types of faults,seismic and well logging data were used to evaluate fault sealing by using normal stress of fracture,closure index of fracture,shale content and mudstone scraping ratio,and multiple parameter combination methods were selected for faults of different properties.Virtual well method with 3Dmove software was used for sealing analysis.Finally,the fuzzy mathematics evaluation method was used to obtain the comprehensive evaluation index,sum up the factors affecting the fault sealing ability,and predict the favorable fault.The results show that the fault sealing in the northern area of Chemo Plaeo-uplift has a moderate deviation,and the current sealing is better than that in the accumulation period.The sealing ability of the fault is mainly affected by the strike,scale and thickness of mudstone and sandstone,but has no obvious relationship with the positive pressure of the fault.The fault sealing in Shawodi area is better than that in Moxizhuang area,and the fault sealing in Zhuangbei area is the worst.It is of great significance to study the sealing property of faults in the north of Chemo Plaeo-uplift by various methods for predicting favorable faults and finding fault block oil and gas reservoirs with oil and gas enrichment.

关 键 词：车莫古隆起北部 断层封闭性 定量参数 模糊数学综合评价法 预测有利断层 

分 类 号：P542.3[天文地球—构造地质学]