连续管氮气泡沫冲砂技术在新疆油田的应用  

Application of Coiled Tube Nitrogen Foam Sand Washing Technology in Xinjiang Oilfield

作　　者：于龙 谢翔 张志伟 李洋 刘家炜 YU Long;XIE Xiang;ZHANG Zhiwei;LI Yang;LIU Jiawei(Well Testing Company,CNPC Xibu Drilling Engineering Co.,Ltd.,Karamay 834000,Xinjiang,China;CNPC Jianghan Machinery Research Institute Co.,Ltd.,Jingzhou 434000,Hubei,China;School of Mechanical Engineering,Yangtze University,Jingzhou 434023,Hubei,China)

机构地区：[1]中国石油集团西部钻探工程有限公司试油公司,新疆克拉玛依834000 [2]中石油江汉机械研究所有限公司,湖北荆州434000 [3]长江大学机械工程学院,湖北荆州434023

出　　处：《焊管》2024年第7期45-49,共5页Welded Pipe and Tube

基　　金：中国石油天然气集团有限公司重大技术推广专项项目“全系列连续管作业技术推广”(项目编号2022ZT01)。

摘　　要：新疆油田部分区块的地层压力系数普遍较低,连续管在水平井水力冲砂作业过程中经常面临漏失、井口失返等复杂情况。针对这一问题,采用低密度氮气泡沫液进行连续管冲砂作业,并设计了泡沫冲砂工艺、检测了低密度泡沫液性能。现场应用结果表明,与常规冲砂液相比,泡沫具有低密度,可实现低压或负压循环,减少漏失;氮气泡沫冲砂技术可以满足连续管冲砂的施工以及有效的井筒疏通,保障了连续管冲砂作业的安全高效运行,符合现场施工要求。The formation pressure coefficient of some blocks of Xinjiang oilfield is generally low,and the coiled tube often faces the complicated situation of leakage and wellhead loss during the hydraulic sand washing operation of horizontal wells.To solve this problem,low density nitrogen foam was used to carry out coiled tube sand washing,and the foam sand washing technology was designed and the performance of low density foam liquid was tested.The field application results show that the foam has lower density than the conventional sand washing liquid phase,which can realize low pressure or negative pressure circulation and reduce the leakage.Nitrogen foam sand washing technology can meet the coiled tube sand washing operation and dredging wellhole effectively,ensure the safe and efficient operation of continuous pipe sand flushing operation,and meet the site construction requirements.

关 键 词：连续管 氮气泡沫冲砂 低压漏失水平井 井筒 

分 类 号：TE375[石油与天然气工程—油气田开发工程]