渤南洼陷浊积砂体岩石学特征及其对储层物性的影响——以沙三段0-9砂组为例

利用岩心观察、薄片鉴定、扫描电镜和X衍射分析等,对渤南洼陷沙三段0-9砂组浊积砂体的碎屑成分、结构和填隙物等岩石学特征进行了分析,结合该层段的孔隙结构、储集物性等特征,研究了浊积砂体的岩石学特征对储层物性的影响.结果表明,研究区岩石类型以岩屑长石砂岩为主,成分成熟度较低,结构成熟度中等.浊积砂体的储层物性随着岩石成分成熟度、结构成熟度的增高而变好,而岩屑、填隙物含量的增加会使储集物性交差.因此,储集物性好的储层应具有石英含量高、岩屑含量和填隙物含量低、粒度大、分选系数小的特点.

Turbidite sand bodies' characters of petrology andmineralogy and its influence on reservoir physical property in Bonan subsag-case of 0-9 sand groups of Es_3

Using the methods of core observation,thin section identification,scanning electron microscope and X-ray diffraction analysis,we analyzed the clastic composition,clastic texture,interstitial material,etc.Combined with pore structure,reservoir physical property,etc.,the influence of the way of turbidite sand bodies' characters of petrology andmineralogy on reservoir physical property is herein studied.The results show that,this area's rock types are mainly debris-feldspar with low compositional maturity and ...