油气储量计算与表示的新方法

容积法是计算油气地质储量的基本方法之一。但是,容积法计算油气地质储量的参数选值,习惯用大平均值、大面积计算,这不仅精度难保证,而且不能表达非均质性储层特性;不能适应当代测井新技术的发展;也不能满足当前油藏工程对地质参数高精度的要求。 通过对非均质油气藏地质特点的研究,我们提出用单元体积法计算油气地质储量,并用其结果编制油气储量分布图。计算结果不仅可得到一个总的储量数据,而且可以表示出油气藏范围内油气地质储量的分布情况,这在油气层非均质性研究、油气工业勘探、开发布井等方面,都可以发挥很好的指导作用。 笔者等用这种计算方法和表示法,实际计算了某油气田凝析气顶的油气储量,其结果得到了有关方面的好评。

A NEW CALCULATION AND EXPRESSION OF GAS-OIL RESERVES

Volume method is one of the basic methods for the calculation of gasoil reserves. However, parameters used traditionally are average values, and from large area calculation. The results obtained in this way are not accurate, and can not reflect the characteristics of nonuniform reservoirs.In this paper, we have developed a new method, unit volume method, to count gas-oil reserves, and have drawn from the results obtained,a gasoil reserve distribution map which will play a good guiding role not only in the study of non-uniformity of gas-oil strata,but in oil expioration,development and well pattern as well.