准噶尔盆地阜东斜坡区侏罗系头屯河组储层孔隙结构特征研究  

Pore structure characteristics of Jurassic Toutunhe Formation in eastern slope of Fukang Depression, Junggar Basin

作　　者：吉鸿杰[1,2] 李小燕[3] 陶辉飞[1] 王琪[1] 吴涛[4] 苏龙[1] 

机构地区：[1]甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室,兰州730000 [2]中国科学院大学,北京100049 [3]中国科学院兰州文献情报中心,兰州730000 [4]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000

出　　处：《岩性油气藏》2016年第2期47-55,共9页Lithologic Reservoirs

基　　金：中国科学院西部行动计划项目"准噶尔盆地东部低熟气资源潜力与有利勘探区预测"(编号:KZCX2-XB3-12);中国科学院"西部之光"人才培养计划项目"准东地区侏罗系各类烃源岩的生排烃特征及生烃潜力评价"(编号:Y404RC1);中国科学院油气资源研究重点实验室开放基金项目"深层烃源岩生烃评价和生烃机理研究"(编号:KFJJ2013-04)联合资助

摘　　要：利用铸体薄片、扫描电镜、物性和高压压汞等多种资料对阜东斜坡区头屯河组储层砂岩的岩石学、物性和孔隙结构等特征进行了研究。结果表明:阜东斜坡区头屯河组储层岩石类型主要为长石岩屑砂岩和岩屑砂岩,成分成熟度较低,结构成熟度中等—高;物性较好,中渗透储层所占比例较高;孔隙类型主要为原生残余粒间孔与溶蚀粒内孔,喉道类型以缩颈型喉道与片状喉道为主;孔隙结构具有中—小孔喉发育、孔喉大小均匀程度较差及孔喉连通性较好的特征。此外,通过对储层物性参数与孔隙结构参数进行多种非线性单相关分析,选出孔隙结构分类参数,运用数据构型与数理统计的方法建立孔喉结构分类标准,并据此将阜东斜坡区头屯河组储层砂岩的孔隙结构划分为4种类型:大—中孔粗喉型(Ⅰ类)、中孔中喉型(Ⅱ类)、中—小孔细喉型(Ⅲ类)及小—微孔微喉型(Ⅳ类)。Petrologic characteristics, physical properties and pore structure characteristics of Toutunhe Formation in eastern Fukang slope were studied using casting thin section observation, scanning electron microscope analysis, mercury injection test. The results show that the lithology of Toutunhe Formation is dominated by feldspar lithic sandstone and lithic sandstone with the characteristics of low compositional maturity and medium-high textural maturity; physical properties is well and the medium permeability reservoirs have a higher proportion; the main types of pores in this zone are intergranular pore and feldspar dissolved pore, while the types of throat are mainly narrow neck shape and sheet shape; pore structure has the characteristics of medium-small pore throats, poor sorting and well pore throat connectivity. Besides, by means of nonlinear canonical correlation analysis among characteristic parameters of microscopic pore structure and macroscopic physical properties, the classification parameters of pore structure were picked out. The nlethods of data configuration and mathematical statistics were used to establish classification standard of pore structure. The reservoir pore structure of Toutunhe Formation is classified into four types on the basis of this classification standard： macro-medium pore and coarse throat structure （type I ）, medium pore and medimn throat structure （type Ⅱ ）, medium- small pore and fine throat structure （typeⅢ） and small-micro pore and micro throat structure （type Ⅳ ）.

关 键 词：孔隙结构 分类评价 头屯河组 阜东斜坡区 准噶尔盆地 

分 类 号：TE122.23[石油与天然气工程—油气勘探]