含油储层体积的取值方法研究

求准砂岩含油储层体积的关键在于算准计算单元的含油面积与有效厚度参数。结合东濮凹陷各油田多年储量计算经验及油田开发工作实际，以储量计算单元划分为基础，进行了含油边界圈定和有效厚度取值方法研究。分析对比了构造层状油藏及岩性油藏含油面积的各种确定方法，总结了东濮凹陷各油田目前常用的算术平均法、等厚线面积权衡法、近似面积权衡法和井点面积权衡法等五种有效厚度取值方法的特点及使用条件，并对如何选择适合东濮凹陷的含油边界圈定和有效厚度取值的方法提出了具有重要价值的认识与建议。

Research on the Methods of Deciding Contour of Oil Pool Delimitation and Effective Pay Thickness

Accurate calculation of oil-beraing area of each calculation unit is crucial to the accurate calculation is of sanstone reservoir volume.Conbined with the experience of reserves calculation of these years in Dongpu Depression and the actual situation of oilfield development,and based with unit division of resreves calculation,the methods of contour of oil pool delimitation and effective pay thickness obtainment are studied.Invhis paper,all methods of defining oil-bearing area of structural layered pool and lithologic oil reservir are analyzed and compared.And the characteristics and using conditions of all hte methods of effcetive pay thickness obtainment tnat are now often used in Dongpu Depression,for example,arithmetical mean,thickness line area balance,approximate rael balance,wellblock area balance,are summarized.In the end,important and valuable suggestions on how to select the proper methods of contour of oil pool delimitation and effective pay thickness obtainment for Dongpu Depression are offered.