摘要
采用室内实验和CFD数值模拟的方法分析反循环清洁工具的深海油井作业性能,通过开展可视化实验、承压实验,以及数值模拟,获取工具内部流态特征及环空压力变化规律,并对工具清洁打捞性能及其影响因素进行了评估。反循环清洁工具的清洁性能主要取决于工具内外的压差,压差越高,清洁性能越好,测试工况下最佳卷吸清洁范围位于吸入口至后方50~100 mm处,清洁效率达75%以上。围压条件下,需提高泵压克服围压增加对吸入速度的削弱,管道漏失会改变工具内部及环空流场特征并降低吸入口速度,因而需提升工作压力以达到良好的清洁效果。
The performance of the reverse circulation cleaning tool in deep-sea oil well operations was investigated by a combination of indoor experiments and CFD numerical simulations.By conducting visualization experiments,pressure-bearing experiments and numerical simulations,the internal flow characteristics of the tool and the pressure variation law inside the pipe were obtained,and the cleaning and salvage performance of the tool and its influencing factors were evaluated.The cleaning performance of the reverse circulation cleaning tool mainly depends on the pressure difference between the inside and outside of the tool,the higher the pressure difference,the better the cleaning performance.The best coiled suction cleaning range under the test conditions is located at 50~100 mm from the suction port to the rear,and the cleaning efficiency reaches more than 75%.Under the circumferential pressure condition,the pump pressure needs to be increased to overcome the weakening of the suction speed by increasing the circumferential pressure.Pipeline leakage will change the internal and annular flow field characteristics of the tool and reduce the suction port velocity,so the working pressure needs to be increased to achieve good cleaning effect.
作者
王占昶
刘琦
王俊新
张益诚
刘文川
WANG Zhan-chang;LIU Qi;WANG Jun-xin;ZHANG Yi-cheng;LIU Wen-chuan(State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400044,China;School of Resources and Safety Engineering,Chongqing University,Chongqing 400044,China;China Ship Development and Design Center,Wuhan 430064,China)
出处
《船海工程》
北大核心
2022年第5期15-21,共7页
Ship & Ocean Engineering
关键词
反循环清洁工具
负压引射
油井清砂
数值模拟
漏失
reverse circulation cleaning tool
negative pressure priming
well sand cleaning
numerical simulation
leakage
