摘要
气井生产动态预测是选择气井生产方式、进行技术经济评价的依据。文章在分析了定产量和定压力两种生产方式的特征、实现方法及其适用范围基础上 ,给出了定产量和定压力两种方式下气井生产动态的预测模型 ,可以预测出气井在稳产期、递减期和增压期的产量、采收率、井口压力、井底压力和地层压力等重要生产数据随时间的变化规律 ;为了在递减期任何时间步长下获得精确的生产动态预测结果 ,将物质平衡与递减规律相结合 ,使这一问题得到解决 ;预测方法不但能预测气井生产经历的稳产、递减和增压三个完整时期的生产动态 ,而且还可扩展到预测多层、多井气藏的生产动态。
Predicting production performance of gas wells is the ground to choice the production way of gas wells and conduct the technical and economic evaluation. Based on the characteristics the performing method, and the applicable range of the two production ways under constant output or constant pressure, the prediction model of production performance for gas wells under the 2 ways is developed, which can estimate the output of gas wells during the stable produc tion stage, the declining stage and the boosting stage, and the recovery factor, and predict the major production data, such as well-head pressure, bottom-hole pressure, and formation pressure changing with time, etc. To obtain accurate predicting results of production performance at any time during the declining stage, the problem can be solved by combining the material balance method with the declining law. The prediction method can predict not only the production performance during the whole process of the stable, declining and boosting stages, but also the production performance for the gas reservoirs with multiple beds and multiple wells.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2004年第8期78-81,共4页
Natural Gas Industry
基金
国家自然科学基金项目资助 (编号 5 0 374 0 5 7)20 0 4 0 3 12)
关键词
气井
预测方法
动态分析技术
生产能力
产量
Materials balance
Natural gas well production
Parameter estimation
Performance
Problem solving
Productivity
Well pressure
