一种气藏平均地层压力的计算方法  

A CALCULATING METHOD OF AVERAGE GAS RESERVOIR PRESSURE

作　　者：王富平[1] 黄全华[1] 张浩[1] 

机构地区：[1]西南石油大学,四川成都610500

出　　处：《大庆石油地质与开发》2009年第6期175-177,共3页Petroleum Geology & Oilfield Development in Daqing

基　　金：基金项目：油气藏地质及开发工程国家重点实验室开放基金项目（PLN0126）资助.

摘　　要：气藏平均地层压力是油气田开发中的一个重要参数,它可以用来表征油气藏特征、计算地质储量和预测油气藏未来的动态特性等。目前，通常利用气井地层压力加权平均来计算气藏平均地层压力，但由于各种加权方法的局限性，往往可能导致计算结果误差较大，可靠性差。为此，从理论出发，对气藏平均地层压力计算方法进行了改进，引入生产井供给区和非控制区的平均地层压力占整个气藏平均地层压力权重的概念，从而使计算的平均地层压力不仅包含了生产井供给区内的地层压力，还考虑了气井非控制区内压力的影响。并结合实例分析，表明该方法计算结果能更好反映实际，应用性高。Average gas reservoir pressure is one of the most important parameters during oilfield development, which can indicate the oil-gas reservoir characteristics, calculate OOIP and predict dynamic performances of oil-gas reservoirs in the future. At present, the weighted average method of reservoir pressure in gas wells has been eom- monly adopted to calculate the average gas reservoir pressure. But due to the limitations of these weighted average methods, the calculated results have obvious errors and are not so reliable. For the reason mentioned above, the calculating method of average gas reservoir pressure has been improved theoretically in the essay, introducing the concept that the average reservoir pressure contributed by production wells and blocks out of the control of the wells is the weight of average gas reservoir pressure. The results calculated by the improved method consider not only the influences of the reservoir pressure in blocks contributed by production wells, but also the blocks out of the control of these gas wells. The results of ease study indieate that the improved calculating method can reflect the real situation and can be used widely.

关 键 词：气藏 平均地层压力 加权平均 改进方法 

分 类 号：TE329[石油与天然气工程—油气田开发工程]