气藏采气速度与稳产期定量关系研究  

Analysis of quantitative relationship between gas offtake and plateau duration of natural gas reservoir

作　　者：郭春秋[1] 李方明[1] 刘合年[1] 夏朝辉[1] 刘雄伟[2] 范海亮[1] 刘玲莉[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石化西北油田分公司,新疆库车842017

出　　处：《石油学报》2009年第6期908-911,共4页Acta Petrolei Sinica

基　　金：中国石油天然气集团公司科技攻关项目(05b60202)资助

摘　　要：采气速度和对应的稳产期是气田开发中非常重要的两个指标。提出了利用产能公式和气藏物质平衡方程计算定容气藏稳产期的方法,其计算结果经数值模拟方法验证是可靠的,说明该方法是可行的。从理论上证明了定容气藏采气速度qD与(1-Rpsp)2近似成直线关系。利用该定量关系可预测气藏稳产期及递减期的产量。Gas offtake （the gas recovery per year） and production plateau duration （the period of stabilized production） are the two important development indexes. A method was proposed for calculating the plateau duration corresponding to gas offtake of a constant volume gas reservoir using the deliverability equation and material balance equation. The reservoir simulation proved the calculation result was reliable. It means that the proposed method is available. It is proved theoretically that gas offtake is in linear relationship with （1-Rpsp）^2. Here, Rpsp is the recovery percent at the end of production plateau. The quantitative relationship can be used to calculate the production plateau duration and gas production rate of declination period.

关 键 词：气藏 采气速度 稳产期 定量关系 采出程度 产量预测 产能公式 物质平衡方程 

分 类 号：TE3[石油与天然气工程—油气田开发工程]