摘要
含有边水的凝析气藏型储气库运行投产后,在多周期扩容过程中,由于季节调峰需求,储气库的采气阶段并不能完全按照上下限压力运行,并且由于气水关系复杂和凝析气相态变化,导致储气库工作气量参数计算较为困难。基于物质平衡原理,推导考虑边水侵入、凝析气相态变化及岩石压缩性的边水凝析气藏型储气库物质平衡方程,通过计算各注采周期内储气库可动用的含气孔隙体积,建立了边水凝析气藏型储气库多周期工作气量的计算方法,结合国内某地下储气库进行了实例验证,结果表明模型计算工作气量值与实际工作气量吻合较好。该方法提高了储气库工作气量的计算准确度,对储气库多周期盘库和高效运行管理提供了技术支撑。
During the multi-period expansion after the underground gas storage （UGS） rebuilt from condensate gas reservoir with edge water is put into operation, the production in the stage of gas production is not in accordance with the upper and lower limit pressure due to the demand of seasonal peak shaving. In addition, it is difficult to calculate the parameters of UGS working gas volume because of the complex gas/water relationship and the change of condensate gas phase state. In this paper, the material balance equation of edge-water condensate gas reservoir UGS was deduced according to the principle of material balance. In this equation, edge water incursion, condensate gas phase change and rock compressibility are considered. Then, the method for calculating the multi-cycle working gas volume of edge-water condensate gas reservoir UGS was established by calculating the available gas pore volume of each injection/production cycle. Finally, the calculation method was validated by conducting case study on one domestic UGS. It is shown that the working gas volume calculated by this model is in accordance with the actual volume. This method improves the calculation accuracy of UGS working gas volume and provides the technical support for multi-cycle inventory verification and efficient UGS operation management. （3 Figures, 2 Tables, 20 References）
作者
孙岩
朱维耀
刘思良
黄堃
SUN Yan;ZHU Weiyao;LIU Siliang;HUANG Kun(School of Civil and Enviromnental Engineering, University of Science and Technology Beijing;SINOPEC Yu-Ji Pipeline Company)
出处
《油气储运》
CAS
北大核心
2018年第5期509-514,共6页
Oil & Gas Storage and Transportation
基金
国家重点基础研究发展计划资助项目"中国南方海相页岩高效开发基础研究"
2013CB228002
国家重大专项资助项目"致密油渗流规律及产能预测方法研究"
2016ZX05010004
关键词
地下储气库
边水凝析气藏
物质平衡
边水侵入
凝析油反蒸发
工作气量
underground gas storage
condensate gas reservoir with edge water
material balance
edge water incursion
retrograde evaporation of condensate oil
working gas volume
