含液气井采气管柱优选

Research on optimizing gas production string in liquid gas wells

方翔 吴晓东 罗明江

FANG Xiang WU Xiaodong LUO Mingjiang

中国石油大学石油工程教育部重点实验室，北京　102249 华北油田公司第五采油厂，河北辛集　052360

MOE Key Laboratory of Petroleum Engineering in China University of Petroleum, Beijing 102249, China No.5 Production Plant, Huabei Oilfield Company, Xinji 052360, China

生产管柱的选择对气井生产的影响很大，合理的生产管柱可以提高气流带水能力，排出井底积液，从而延长含液气井稳定生产能力。从现有的管柱优选方法出发，针对含液气井生产情况，提出了含液气井采气管柱优选方法，即运用Hagedorn和Brown模型进行管柱压力损失研究，运用Turner模型进行临界携液流量研究，运用Beggs模型进行冲蚀流量研究，然后运用节点分析法进行敏感性分析，从以上4个方面对油管合理内径的选择进行分析，从而确定出含液气井采气管柱合理内径。

The selection of string exerts great effect on gas well production. A reasonable string of production may increase throughput capacity, bleed liquid loading, thereby prolong the steady production capacity of liquid gas wells. This paper starts from the existing string selecting methods, proposes a method for selecting gas production string, i.e. selecting the rational inner diameter of tubing. The method is fulfilled by analyzing the string pressure loss, the critical liquid carrying flow rate, the erosion flow rate, and the sensibility with Hagedorn Brown model, Turner model, Beggs model, and node analysis separately. And finally the rational inner diameter of gas production string for liquid gas wells is determined.