井间干扰造成的气藏储量叠加问题研究

Research on Superimposed Dynamic Reserves of Gas Reservoir Caused by Well Interference

气藏动态储量计算与评价是气藏开发调整的前提和依据。基于常用计算气藏动态储量的单井集合法受到资料和生产时间等因素的限制,在实际应用中没有充分考虑井间干扰对计算结果的影响。针对各井投产时间不同造成的井间干扰并结合川东沙坪场石炭系气藏的实际情况,在物质平衡法的应用中进行改进。与传统物质平衡法单井集合比较,该方法消除了井间干扰造成的储量叠加问题,能够更准确地计算动态储量。

Calculation and evaluation of dynamic reserves of gas reservoir is the premise for the later adjust- ment. The common methods are limited by data and production time, so well interference is often ignored in practical use. Focused on well interference caused by different production time,this article combines practi- cal case of Shapingchang Carboniferous gas reservoirs and improves the material balance method. In com- parison with traditional material balance method, this improved method eliminates superimposed calculation of dynamic reserves caused by well interference, and obtains more precise dynamic reserves.