气举设计适应性评价新方法——气举工况诊断节点分析法  

A new method for assessing the adaptability of gas lift design:nodal analysis for gas lift operation diagnosis

作　　者：罗威[1,2] 廖锐全[1,2] 许冬进[1,2] 张祖国[3] 柯文奇 谢向威 

机构地区：[1]长江大学石油工程学院,湖北荆州434023 [2]长江大学教育部油气资源与勘探技术重点实验室,湖北荆州434023 [3]中国石化石油勘探开发研究院,北京100083

出　　处：《中国海上油气》2016年第1期114-119,共6页China Offshore Oil and Gas

基　　金：国家自然科学基金项目"基于Hybrid数据的复杂系统辨识与优化设计及在低渗透油井中的应用(编号:61572084)";长江大学博士点基金项目"低渗透分段压裂水平井渗流机理与产能预测研究(编号:20114220110001)"部分研究成果

摘　　要：在气举装置投入生产前,分析连续气举设计装置对目标油井含水率、气油比、地层压力、产液指数、注气压力和注气量等重要参数的适应范围,评估出气举设计的适应性,进而优化或优选出最佳的气举设计方案是非常必要的。将气举工况诊断与节点分析进行有机结合,分析气举设计对目标油井各重要参数的适应范围,进而制作出不同的含水率、气油比条件下气举地层压力、产液指数适应性图版,得到了气举设计适应性评价新方法。实例分析表明,新方法制作气举设计适应性图版与现场测试判断结果较吻合,可以评价气举设计方案在油井生产中的适应性。Before the gas lift devices are put into operation, analyzing the applicable range of water-cut, GOR, reservoir pressure, liquid production index, gas injection pressure and injection rate of the target well for continuous gas lift devices, evaluating the adaptability of the gas lift design, and then choosing the optimal gas lift design are really necessary. By combining gas lift operation diagnosis with nodal analysis, and analyzing the gas lift design adaptability to each important parameter of the target well, the adaptability chart for reservoir pressure and liquids production index under different water cut and GOR values was developed, based on which a new approach for the adaptability assessment of gas lift design was estab- lished. Case studies show that the adaptability chart is in good agreement with the judgment results by field test, and can be used to evaluate the gas lift design adaptability in practical production.

关 键 词：连续气举设计 气举装置 适应性 气举工况诊断节点分析法 

分 类 号：TE355.3[石油与天然气工程—油气田开发工程]