摘要
针对鄂尔多斯盆地姬塬地区长8储层,选取45口井130个样品进行详细的镜下薄片观察和X射线衍射实验,定性分析了该研究区储层的岩石学特征、孔隙类型特征及成岩类型特征,探讨了面孔率成因控制因素,描述为沉积因素、成岩因素两大类13个因素.利用多元线性逐步回归方法对面孔率与诸多因素相关性进行分析讨论,分别建立了由1～7个主控因素控制的线性回归方程,并给出了相应的地质解释.最后,对所建立的回归方程进行了实际应用检验.结果表明,所建立的回归方程预测面孔率值与实测面孔率值拟合情况较好,可以用来预测储层质量.
Microscopic slice observations and X-ray diffraction experiments were conducted with 130 samples from 45 wells in the Chang 8 reservoir of Jiyuan area,Ordos Basin,to qualitatively analyze petrologic characteristics,pore types and diagenetic types. The control factors on surface porosity are discussed and described as involving 13 factors of two categories i. e. depositional and diagenetic factors. Multiple linear stepwise regression method has been applied to analyze surface porosity and its correlation factors, and to establish linear regression equations respectively controlled by 1-7 factors which in turn give corresponding geologic interpretations. Finally,the regression equations are testified in practice. The results show that the regression equations work well in prediction of surface porosities,which match well with measured values,therefore can be used to predict reservoir quality.
出处
《特种油气藏》
CAS
CSCD
北大核心
2013年第5期40-45,153,共6页
Special Oil & Gas Reservoirs
基金
中国科学院西部行动计划项目(KZCX2-XB3-02)
中国科学院"西部之光"联合学者计划项目(Y133WQ1-WQ)
关键词
逐步回归
储层物性
沉积因素
成岩因素
姬塬地区
stepwise regression
reservoir property
sedimentary factor
diagenetic factor
Jiyuan area
