吐哈盆地巴喀油田下侏罗统致密砂岩储层特征及主控因素分析  

Properties and the Main Controlling Factors of Compact Sandstone Reservoirs in Lower Jurassic Series of Baka Oilfield in Tuha Basin

作　　者：张超[1] 李旭平[1] 钟建华[2] 张涛锋 

机构地区：[1]山东科技大学地质科学与工程学院,山东青岛266590 [2]中国石油大学(华东)地球资源与信息学院,山东东营257061 [3]渤海钻探第二录井分公司综合作业部,河北沧州062552

出　　处：《山东科技大学学报（自然科学版）》2011年第6期65-72,共8页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：国家示范工程"吐哈盆地致密砂岩气高效开发示范工程"项目(yty2011011)

摘　　要：运用层序地层手段,结合主要探井、地震资料,确定对比标志层;通过钻井、测井资料,划分基准面旋回,建立地层格架。通过关键井单井相、岩心观察和描述,编制综合井柱状图。经薄片鉴定、扫描电镜及X-衍射粘土矿物分析,认为储层颗粒整体较粗,胶结物含量低、成分成熟度和结构成熟度高,普遍含塑性岩屑、发育伊利石等多因素共同导致了储层的致密化。储集空间主要为粒间孔和粒内溶蚀孔。By means of the sequence stratigraphy and combining with main exploratory wells and seismic data the comparative key bed was determined. The sedimentary base cycles was divided and the stratigraphic framework was established with the drilling and logging data. The columnar section of comprehensive well was made through the study of single-well phase of key wells, the observation and description of cores. By thin section authentication, electron microscopy scanning and X-ray diffraction of clay mineral analysis,the grain size of particles composed the reservoirs was quite coarse as a whole,and the low cement content,low compositional maturity and high textural maturity,generally with plastic debris,and the development of illite and many other factors led to the reservoir compaction. Accumulation capacity of the reservoirs mainly displays intergranular pores and intragranular dissolution pores.

关 键 词：巴喀 致密砂岩 沉积作用 成岩作用 构造 

分 类 号：P618.130[天文地球—矿床学]