海上气井固体泡排采气工艺溶解特性分析  

Dissolution characteristics analysis of solid bubble drainage process on the offshore gas field

作　　者：杨万有[1] 郑春峰[1] 包建银 李昂[1] 

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]中国石油大学(北京)石油工程学院,北京100249

出　　处：《石化技术》2016年第4期114-116,125,共4页Petrochemical Industry Technology

摘　　要：针对气井产水积液问题,海上气田采用固体泡排采气工艺技术。该工艺技术在固体泡排剂单次加注用量,加注后焖井时间等工艺参数选取上仍以经验为主。为此引入基于Fick’s第二定律和Nernst-Brunner的药物释放模型,建立固体泡排溶解特性释放模型。该模型可用于计算固体泡排剂在井筒中浓度释放速度。对影响固体泡排剂浓度释放速度因素敏感性分析。研究表明,浓度释放速度与泡排剂用量、扩散系数及井筒积液高度有关。在实际固体泡排采气过程中,可以通过上述影响因素分析对单次加注用量,加注时间间隔预测。As to the problem of water effusion in the wellbore during gas production process,offshore gas field commonly used the solid foam drainage gas technology.However,there is no theoretical support for the design and parameter optimization,such as the dosage at one time and soak time,which is usually taken by empirical approach.To deal with this problem,this paper build up a Solid bubble dissolution characteristics release model,whose Theoretical Foundation is Fick’s second law and Nernst-Brunne equation.It provide a way to calculated the Concentration diffusion velocity of Foaming agent and analysis the different affecting factor .According to the study,the concentration diffusion velocity is related to the dosage of foaming agent,the diffusion coefficient and the wellbore fluid height .By analysis these factor,we could predict the dosage of foaming agent at one time and soak time.

关 键 词：气井 固体泡排 溶解特性 加注用量 焖井时间 

分 类 号：TE377[石油与天然气工程—油气田开发工程]