摘要
凝析气井单井动态储量的计算问题一直是凝析气藏勘探和开发领域的一个热点和难点问题。基于干气气藏物质平衡方程的单相法等常规计算方法存在多种局限性,致使凝析气井单井动态储量计算误差较大。为此,在理论研究的基础上,基于多相流理论分别建立气相和凝析油不稳定流动方程,推出生产过程中的质量守恒方程并结合相渗数据计算采出的总质量,结合生产数据建立生产历史拟合最优化模型保证储量计算结果的准确性并进行了实例验证。结论认为,与常规计算方法相比,所建立的新方法基于质量守恒原理并充分地利用气井生产数据参与计算,保证了凝析气井单井动态储量评价结果的准确性。
The calculation of single well dynamic reserves in condensate gas wells has been a hot and difficult problem in the field of exploration and development of condensate gas reservoirs.The conventional calculation methods, such as single-phase method based on the material balance equation of dry gas reservoir, have many limitations,which result in the calculation error of single well dynamic reserves. Therefore, on the basis of theoretical research,the unsteady flow equations of gas phase and condensate oil are established based on multiphase flow theory.By introducing the mass conservation equation in production process and combining with the total quality of the collected data, the production history fitting optimization model is established by combining with the production data to ensure the accuracy of the reserves calculation results and the example is validated.It is concluded that the new method is based on the principle of mass conservation and fully participates in the calculation of gas well production data, which guarantees the accuracy of the evaluation results of single wells dynamic reserves in condensate gas wells.
作者
王怒涛
陈仲良
祝明谦
王玉根
张琰
Wang Nu-tao1 ,Chen Zhong-liang1 , Zhu Ming-qian1 , Wang Yu-gen2 , Zhang Yan2(1.Southwest Petroleum University ,Chengdu 610500 ,China ; 2.Geological Exploration and Development Research Institute, Ch ua nqing Drilling Engineering Co. Ltd., CNPC , Chengdu 610051, China)
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2018年第3期424-428,共5页
Natural Gas Geoscience
基金
"十三五"国家科技重大专项"致密砂岩气藏渗流特征及开发技术政策研究"(编号:2016ZX05048-004-005)资助
关键词
凝析气藏
物质平衡方程
动态储量
反凝析
Condensate gas reservoir
Material balance equation
Dynamic reserves
Retrograde condensation
