鄂尔多斯盆地西峰油田三叠系延长组长6—8段储层砂岩成岩作用研究  

Reservoir Sandstone Diagenesis of Memeber 6 to 8 in Yanchang Formation (Triassic), Xifeng Oilfield, Ordos Basin

作　　者：史基安[1] 王金鹏[1] 毛明陆[2] 王琪[1] 郭正权[2] 郭雪莲[1] 卢龙飞[1] 

机构地区：[1]中国科学院兰州地质研究所气体地球化学重点实验室,兰州730000 [2]中国石油长庆油田公司勘探开发研究院,西安710004

出　　处：《沉积学报》2003年第3期373-380,共8页Acta Sedimentologica Sinica

基　　金：国家重点基础研究发展规划项目 (G1 9990 4 331 0 );国家自然科学基金项目 (批准号 :4 0 0 72 0 50;4 0 2 72 0 6 5);中国科学院知识创新工程重要方向项目 (KZCX3-SW - 1 2 8)资助

摘　　要：鄂尔多斯盆地西峰油田的储集岩—三叠系延长组长 6— 8段砂岩是典型的低孔低渗储集岩 ,具有粒径细、成分成熟度低、磨圆度较差、分选性较好的特点。运用薄片鉴定、粘土矿物、稳定同位素分析及物性分析等资料 ,研究了延长组长 6— 8段的成岩作用特征 ,分析了它们对储层物性的影响状况 ,确定了储层砂岩的成岩作用阶段 ,指出西峰油田优质储层的发育取决于储集砂岩中粘土膜形成作用。Reservoir sandstone of Member 6 to 8 in Yanchang Formation (Triassic) in Xifeng oilfield of Ordos basin is typical of low porosity and low permeability, which has the characteristics of fine grain size, low compositional maturity, poor roundness and good sorting. Based on thin-section observation and analyses of c lay minerals, stable isotopes and physical property, this article takes researc h on diagenetic characteristics in Member 6 to 8 of Yanchang Formation, analyses their influence on reservoir physical property and determines diagenetic stage of reservoir sandstone. Meanwhile, this article indicates that the development o f high quality reservoir is dependent on the development of clay film, hydrocabo n emplacement grain dissolution in reservoir sandstone.

关 键 词：储层沉积学 储层地球化学 鄂尔多斯盆地 三叠系延长组 成岩作用 西峰油田 

分 类 号：P618.130.21[天文地球—矿床学]