准噶尔盆地阜北地区头屯河组非均质性综合研究  

Comprehensive Study on Reservoir Heterogeneity of Toutunhe Formation in the Slope Area,North of Fukang Sag,Junggar Basin

作　　者：于景维 牛志杰[2] 祁利祺 孙新铭[3] 柳妮[3] 张进 曹嵩 YU Jingwei;NIU Zhijie;QI Liqi;SUN Xinming;LIU Ni;ZHANG Jin;CAO Song(Karamay Campus of China University of Petroleum,Karamay,Xinjiang 834000,China;Research Institute of Petroleum Exploration and Development,Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China;Karamay Vocational&Technical College,Karamay,Xinjiang 834000,China)

机构地区：[1]中国石油大学(北京)克拉玛依校区,新疆克拉玛依834000 [2]新疆油田勘探开发研究院,新疆克拉玛依834000 [3]克拉玛依职业技术学院,新疆克拉玛依834000

出　　处：《现代地质》2021年第3期819-831,共13页Geoscience

基　　金：国家科技重大专项“大型油气田及煤层气开发”(2011ZX05001-005-01);中国石油大学(北京)克拉玛依校区人才引进项目(RCYJ2016B-01-010);克拉玛依市科技局项目(2019RC001A)。

摘　　要：对准噶尔盆地阜康凹陷北部斜坡区(阜北地区)中侏罗统头屯河组储集层非均质性进行探讨,为研究区头屯河组储集层深入勘探提供指导。综合运用钻测井、岩心描述、薄片、粒度、(恒速)压汞曲线以及核磁曲线等资料,对研究区头屯河组储集层的微观、宏观非均质性以及非均质性的控制因素进行详细分析。结果表明:头屯河组储集层发育2类孔隙结构,造成储层微观非均质性较强;储集层包含3类粒度韵律、2类渗透率韵律以及2类夹层不均匀分布导致层内非均质性较强,分层系数以及砂地比不均导致层间非均质性较强,变异系数、突进系数和非均质性系数反映平面非均质性较强,宏观非均质性整体表现较强。沉积环境和成岩环境对头屯河组储集层非均质性程度都有影响,以成岩环境为主。最终认为研究区勘探目标区为应首选头一段河道砂体主体区域。Reservoir heterogeneity of the Middle Jurassic Toutunhe Formation in the northern slope area of Fukang sag was discussed,which was favorable to guide deeper exploration of the Formation.Macro-/micro-heterogeneity and their controlling factors were determined by using substantial amount of data,such as those from drilling,well-log,core descriptions,sections,particle sizes,and constant-rate mercury injection.The results show that two types of pore structures are developed in the reservoirs of the Toutunhe Formation,leading to strong micro-heterogeneity.Reservoirs have three types of particle rhythm,two types of permeability rhythm and two types of interlayers,causing strong interbedded heterogeneity,intraformational and planar heterogeneity for many coefficients,together with strong macro-heterogeneity.Reservoirs of the Toutunhe Formation have strong heterogeneity,which are controlled by sedimentary and diagenetic environment,with the latter being the main controlling factor.Last but not least,the prime exploration target area is likely the central part of channel in the Toutunhe Formation(1st member).

关 键 词：孔隙结构 双峰型 单峰型 宏观非均质性 头屯河组 

分 类 号：TE122.2[石油与天然气工程—油气勘探]