摘要
针对数学手段在解决地层流动单元划分方面的不足,采用了分层次的流动单元研究思路,对塔中油田塔中11油藏志留系潮坪相储层进行了流动单元研究。在应用高分辨率层序地层学建立等时地层格架的基础上,首先开展渗流屏障研究并确定出储层内连通体的分布。然后综合采用基于孔渗的宏观参数FZI和微观参数R35建立流动单元的聚类样本和判别函数,分别划分出取心井和非取心井的流动单元类型。最后根据单井划分结果,在储层结构模型的约束下,优选随机建模方法对流动单元的分布进行横向预测,建立了流动单元分布的三维模型。实践证明,流动单元分层次的研究方法在潮坪相地层中同样有好的应用效果。
The conventional method for flow unit study was only based on applied statistics,which neglected the complexity of geological variety and was inaccurate.A new multistep method of determination of flow units was applied in tidalflat reservoir in the Talimu oilfield.Started with the construction of the high resolution sequence stratigraphic framework,the first step is to differentiate flow barriers and connected sandbodies.Then a clustering sample and criterion function of different flow units were constructed according to two parameters(FZI and R35) and the distribution of flow units was identified by statistical ways.In reference to results of well partition,the three-dimensional model of flow units was built up restricted by connected sandbodies.The example demonstrates that the method of multistep flow unit study can be applied in tidal-flat facies oilfield successfully.
出处
《新疆石油天然气》
CAS
2005年第3期7-11,20,共6页
Xinjiang Oil & Gas
