渤海某油田CM多元回归法渗透率评价

PERMEABILITY EVALUATION BY CM MULTIPLE REGRESSION IN AN OILFIELD IN BOHAI

在油田实际生产中，经常采用岩心孔隙度与岩心渗透率的回归。但在油田开发阶段，随着井数增多、含油面积增大，发现孔渗关系回归计算得到的渗透率，与油田实际生产资料一致性不佳，不利于油藏精细描述。本文以渤海某油田东营组为主要研究对象，分析了OIP阶段孔渗回归法计算渗透率的不足及原因，建立了新的CM多元回归法，对油田渗透率进行了大规模调整并对计算结果在油田实际生产中进行了验证及应用，取得了很好的效果。

Usually K-Φregression method is used to calculate K in oil filed development.But as the increasing of well number and oil area,the permeability isn't disagreement with the oilwell performance data.It isn't propitious to the reservoir description.The permeability of the Dongying Formation of a certain oilfield in BoHai had been restudied,combined with its production performance data.The disadvantages of OIP K-Φregression method had been discussed.A new method to calculate permeability by CM multiple regression had been presented in this paper,which had been applied and testified in this oilfield,and achieved excellent results.