摘要
传统的物质平衡法将整个气藏当作一个大容器,完全忽略了地层的非均质性以及由此造成的储层各处地层压力以及流动阻力的不同。因此,物质平衡法的预测结果往往过于乐观,与实际情况有一定偏差。本文根据地层实际及天然气在地层中流动的特点,提出了具有补给区的物质平衡法。此方法将单井控制的储层范围划分为近井生产区与远井补给区,在一定程度上克服了传统物质平衡法的上述缺点。利用新方法计算出的生产动态及各项指标,与气田的生产实际和人们的经验都较符合。
The traditional balance equation treats the whole reservoir as a big tank. It neglects absolutely the difference of formation pressure and flow resistance at different locations in the reservoir. This makes the prediction, given by the material balance method, a rough one. Generally it will give a more optimistic estimation and diviates from real situation to some extent. On the basis of formation heterogeneity and the flow characteristics of gas in the reservoir, this paper gives out an equation of material balance with a supplying region. The new method divides the formation, controlled by a well, into two regions, the production region close to the well and the supplying region far from the well. Thus, it avoids the above shortcomings of the traditional material balance method. The prediction of the gas reservoir performance and development index, given by the new method, coincides with the gas production practice and field experiences much better. An example is given to show the effectiveness of the new method.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1993年第5期53-61,共9页
Petroleum Exploration and Development
