平行外推压降曲线法在靖边气田动态储量计算中的应用

储量是一个气田的物质基础,如何确定动储量及动储量的大小是气田开发中首先必须解决的问题。目前主要采用压降法确定动态地质储量。由于低渗透气藏渗流规律的特殊性,导致其压降储量曲线也表现出特殊规律。如果仍然按照普通气藏的处理方法计算低渗透气藏动态储量,会导致认识上的偏差及计算结果的失真。因此针对靖边气田的实际情况,着力于应用压降曲线法中的平行外推法计算靖边气田部分区块的动态储量,以达到探讨一种方法、认识下古气藏储量的目的。

Application Technique in Parallel Extrapolation Pressure Fall of Curve in Jingbian Gasfield about Calculation of Dynanmic Reserves

Reserves is material base of gas field. How ascertain dynamic reserves of gas field is first solved issue of gas field development. Present,main apply Pressure Drop Technique to asertain dynamic geologic reserves. Thanks to peculiaarity of filtering flow regular pattern about low permeability gas reservoir cause pressure fall off curve that display particular regular pattern. If dynamic reserves of low permeability gas reservoir is calculated by processing method of ordinary gas reservoir that can cause deviation of knowledge and distortion of computational solution. Wherefore,in view of practical situation of Jingbian Gas Field,the original apply technique in parallel extrapolation pressure fall off curve to calculate dunamic reserves of partly block in Jingbian Gas Field. Which can research a kind approach and knowledge reserves of lower palaeozoic.