单井生产动态拟合法求取强水驱凝析气藏动态储量

发布时间：2018-01-06 21:31

本文关键词：单井生产动态拟合法求取强水驱凝析气藏动态储量　出处：《中国海上油气》2016年02期 　论文类型：期刊论文

【摘要】：针对压降法计算强水侵凝析气藏动态储量结果偏大,现代产量递减法则需要气井达到拟稳定流阶段时计算结果才准确等问题,提出了一种适用于强水侵凝析气藏的单井生产动态拟合新方法。该方法基于物质平衡理论、三相气井产能模型求取不同时间的地层压力,利用井筒压降模型、相态理论求取井底流压及物性参数,以测试的地层压力、产量、流压为目标函数并采用最优化方法自动拟合生产数据,从而求得单井动态储量和水侵强度。实例应用表明,本文方法与现代产量递减法(气井达到拟稳定流阶段)的计算结果相近,具有较好的准确性,而本文方法所需资料较少,适用性更强。
[Abstract]:In view of the problem that the pressure drop method is used to calculate the dynamic reserves of strong water-invaded condensate gas reservoirs and the modern production decline rule requires that the calculation results are accurate when the gas wells reach the stage of quasi-stable flow. A new method of single well production performance fitting for strong water invasion condensate gas reservoirs is proposed. Based on the material balance theory, the productivity model of three phase gas wells is used to calculate the formation pressure at different times and the wellbore pressure drop model is used. The bottom hole flow pressure and physical parameters are obtained by phase state theory. The measured formation pressure, production rate and flow pressure are taken as objective functions and the production data are automatically fitted by optimization method. As a result, the dynamic reserves and water invasion intensity of single well are obtained. The application of this method shows that the calculation result of this method is close to that of modern production decline method (gas well reaches the stage of quasi-stable flow) and has good accuracy. However, the method in this paper requires less information and is more applicable.
【作者单位】：西南石油大学油气藏地质及开发工程国家重点实验室;安东石油技术(集团)有限公司;中国石油川庆钻探工程有限公司川西钻探公司;中海石油(中国)有限公司湛江分公司;
【基金】：国家自然科学基金“高含硫气藏井筒硫沉积机理研究(编号:51474181)”部分研究成果
【分类号】：TE328
【正文快照】： 刘建仪,韩杰鹏,张广东,等.单井生产动态拟合法求取强水驱凝析气藏动态储量[J].中国海上油气,2016,28(2):83-87.Liu Jianyi,Han Jiepeng,Zhang Guangdong,et al.Single well production performance fitting method for dynamic reserves of strong water-drivegas condensate

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