喷射旋流复合排液工具结构参数优化及现场试验

Structural Parameter Optimization and Field Test of a Jetting and Helical Combination Drain Tool

刘欢乐 薛世峰 孙志扬 周朝 范杰

LIU Huanle XUE Shifeng SUN Zhiyang ZHOU Chao FAN Jie

中国石油大学（华东）储运与建筑工程学院, 山东青岛 266580 中石化石油工程技术研究院有限公司, 北京 102206 中国石化江汉油田分公司石油工程技术研究院, 湖北武汉 430035

College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao, Shandong, 266580, China Sinopec Research Institute of Petroleum Engineering Co., Ltd., Beijing, 102206, China Research Institute of Petroleum Engineering , Sinopec Jianghan Oilfield Company, Wuhan, Hubei, 430035, China

为了降低生产流体在井筒中产生的压降、充分利用积液气井自身能量进行低成本排水采气，研制了喷射旋流复合排液工具。在设计喷射旋流复合排液工具结构的基础上，研制了其性能测试试验系统，测试了不同气体流量下放置不同结构参数该工具时的模拟井筒压降，开展了结构参数的单因素分析和正交试验分析，得到了不同条件下喷射旋流复合排液工具最优的结构参数。研究结果表明，喷射旋流复合排液工具的主要结构参数均会影响流体在井筒中产生的压降；要使井筒中的压降最小，不同产量的气井对应不同结构参数的工具。结构参数优化后的喷射旋流复合排液工具在西南地区M气田A井进行了现场试验，在相同生产周期内，累计产气量平均增加20.95%，累计产水量平均增加21.59%，验证了该工具的排液增产效果。研究和现场试验表明，喷射旋流复合排液工具为积液气井低成本排水采气提供了一种新的技术手段。

In order to reduce the pressure drop of production fluid in the wellbore and make full use of the energy of gas wells with fluid accumulation for low-cost drainage and gas recovery, a jetting and helical combination drain tool was developed. Based on the design of the tool structure, the performance test system of the tool was built.The simulated wellbore pressure drops at different gas flow rates with different structural parameters were tested, and the single factor analysis and orthogonal test analysis of the structural parameters of the tool were carried out. In addition, the optimal structural parameter combinations of the tool at different conditions were obtained. The results show that the main structural parameters of the tool affect the pressure drop of the fluid in the wellbore. Moreover, gas wells with different production rate require tools with different structural parameter combinations to minimize the wellbore pressure drop. After the optimized tool was run in Well A, the cumulative gas production increased by an average of 20.95%, and the cumulative water production increased by an average of 21.59% over a same production period. The drainage stimulation effect of the tool was demonstrated. The successful application of this tool provides a new technical method for low-cost drainage and gas recovery in gas wells with fluid accumulation.

中国石化科技攻关项目“涪陵页岩气井排水采气技术研究”（编号：P19025-3）和中国石化科技部前瞻项目“井下气体压缩增能增产机理探索”（编号：P22231）联合资助

https://doi.org/10.11911/syztjs.2022116