准噶尔南缘前陆盆地第三系“不同段、不同排构造”储集性之差异及其控制因素  

Different Segmentations and Zones during Tertiary in the Southern Margin of Junggar Basin: Correlation of reservoir property and controlling factors

作　　者：高志勇[1] 朱如凯[1] 郭宏莉[1] 王道串[2] 李本亮[1] 

机构地区：[1]中国石油勘探开发研究院实验研究中心,北京100083 [2]成都理工大学,成都610059

出　　处：《沉积学报》2010年第3期534-546,共13页Acta Sedimentologica Sinica

基　　金：国家重大专项课题(编号:2008ZX05000-003-01)资助

摘　　要：针对前陆盆地所特有的"不同段、不同排构造"这一特点,通过对准噶尔南缘13口钻井的岩心精细描述、储层显微特征研究、数据统计及镜质体反射率(Ro)等资料的综合分析,并以"不同段、不同排构造"作为研究对比单元,认为准噶尔南缘前陆盆地古近系—新近系沙湾组储集性之间在物性、成分成熟度、结构成熟度等方面均存在明显差异,形成这些差异的主要控制因素为:①不同沉积物源与沉积相影响储集性,即使在同一物源、同一沉积相类型内,砂体类型不同造成了储集性的差异;②成岩相的不同、填隙物(泥质、胶结物)含量与分布的不均匀性与溶蚀作用均影响储集性;③机械压实作用形成的埋藏热效应主要影响古近系储集层,构造挤压作用影响相对要弱;④新近系储集层主要受构造挤压作用影响,埋藏热效应则转变为次要影响因素。A peculiar characteristic,different segmentations and zones,belongs to foreland basin.In southern margin of Junggar Basin,through a lot of cores of 13 wells describing,reservoir studing and some results of vitrinite reflectance analyzing,there are 3 different factors of reservoir at segmentations and zones in Tertiary.They are different porosity,permeability,compositional maturity and textural maturity.In different segmentations and zones as a research unit in thrust belt,the controlling factors of the different reservoir include ①different sedimentary feeders and sedimentary facies and different sandstone body that belonging at the same sedimentary facies.②Different Lapidofacies,clay and cement that located at inter-grain and dissolution in reservoir.③The main controlling reservoir is buried thermal effect and not the tectonic compression in Palaeogene.And ④because of the Tianshan Mountain＇s uplifting in Neogene the tectonic compression changes the main controlling factor of reservoir in southern margin of Junggar Foreland Basin.

关 键 词：准噶尔南缘 前陆盆地 第三系 储集性 成岩相 埋藏热效应 构造挤压作用 

分 类 号：TE122.2[石油与天然气工程—油气勘探]