吉林伊通盆地莫里青断陷古近系双阳组储层成岩作用研究  

Diagenesis of reservoir of the Shuangyang Formation of Paleogene in Moliqing Faulted Depression of Yitong Basin, Jilin Province

作　　者：何玉平[1] 刘招君[1] 董清水[1] 郭璇[2] 张艳[1] 窦磊[1] 

机构地区：[1]吉林大学地球科学学院,吉林长春130061 [2]中国石油勘探开发研究院西北分院,甘肃兰州730020

出　　处：《古地理学报》2006年第1期75-82,共8页Journal of Palaeogeography：Chinese Edition

基　　金：中国石油天然气总公司项目下设子课题(2001220101000975)

摘　　要：古近系双阳组是在吉林省伊通盆地莫里青断陷中油气赋存的主要层位。储层主要为湖底扇和扇三角洲的砂体。依据双阳组储层的大量薄片、扫描电镜、粘土矿物分析资料研究了该储层的成岩作用。研究结果表明双阳组储层的成岩作用经历了压实、压溶、胶结、交代和溶解5方面的作用。储层中自生粘土矿物蒙皂石向伊利石转化的过程可划分为蒙皂石渐变带、第1迅速转化带和第2迅速转化带,相应的成岩作用阶段可划分为早成岩阶段B期、晚成岩阶段A1期和晚成岩阶段A2期。依据在垂向上的成岩变化,建立了莫里青断陷双阳组储层的成岩作用演化序列。在垂向上成岩作用的类型和强度均存在明显的差异,造成了储层物性的垂向分带。The Shuangyang Formation of Paleogene is the important oil-gas reservoir interval in the Moliqing Faulted Depression of the Yitong Basin. Based on a great deal of thin sections, scanning electron microscope observations and data of clay minerals X-diffraction analyses and other methods, the diagenesis of the Shuangyang Formation reservoirs is revealed. The results show that the reservoir diagenesis includes compaction, pressure-solution, cementation, replacement and dissolution . The conversion of montmorillonite into illite is a typical feature in the Shuangyang Formation reservoirs. It took place a gradual transforming zone, the first rapid transforming zone and the second rapid transforming zone. Correspondingly the diagenetic stage is divided into the early diagenetic B stage, late diagenetic A1 and diagenetic A2 stages. The evolution succession of diagenesis of the Shuangyang Formation reservoirs is established according to the vertical diagenetic evolution. The types and intensities are all different in the vertical direction, which cause the vertical zoning of reservoir properties.

关 键 词：成岩作用 双阳组 莫里青断陷 伊通盆地 

分 类 号：TE122.2[石油与天然气工程—油气勘探] P588.2[天文地球—岩石学]