萨尔图油田中区西部注聚合物试验区沉积微相研究

STUDY OF MICROFACIES IN POLYMER TEST IN MIDDLE WEST REGION OF SAERTU OIL FIELD

搞清砂体的沉积环境是正确认识其非均质特征、估计其开发效果和提高储层参数预测精度的基础和关键。在油田开发阶段，由于取芯井很少，单纯依靠测井曲线对沉积单元（单砂体）进行沉积微相的划分是比较困难的，采用砂体几何形态、沉积层序、水动力参数、测井曲线形态等资料的综合分析判断，在细分沉积单元研究的基础上，对大庆萨尔图油田中区西部注聚合物试验区ＰＩ３油层进行了沉积微相的划分。结果表明，在取芯井很少的情况下，可以得到比较满意的结果。

To recognize sedimentary environments of the sandbodies is the key to correctly recognizing their teterogeneity,to estimating the effect of field development and to assuring the prediction precision of the reservoir parameters. During the field development,to recognize the microfacies of sedimentary units based on the well logging data is more difficult because there were few cored wells in the area. By analysing the geomentry of sandbodies ,the sedimentary sequence,the hydrodynamic parameters and the shape of well logging, we have divided the microfacies of the PI3 reservoir in the polymer injecting test site in the middle west region of Daqing Saertu Oil Field. The result is much more satisfactory though there are fewer cored wells.