连续油管冲砂排量优选  

The optimal sand flushing displacement with coiled tubing

作　　者：张乾 王方祥 郝华松 李道松 吴英新 于琨 ZHANG Qian;WANG Fangxiang;HAO Huasong;LI Daosong;WU Yingxin;YU Kun(Downhole Technology Service Company,CNPC Bohai Drilling Engineering Co.,Ltd.,Tianjin 300280,China;Well Testing Company,CNPC Bohai Drilling Engineering Co.,Ltd.Langfang,Hebei 065007,China)

机构地区：[1]中国石油集团渤海钻探工程公司井下技术服务公司,天津300280 [2]中国石油集团渤海钻探工程公司油气井测试分公司,河北廊坊065007

出　　处：《油气井测试》2020年第4期63-67,共5页Well Testing

基　　金：中国石油集团渤海钻探工程有限公司重大研发项目“连续油管试油工艺技术研究”(2019ZD03K)。

摘　　要：为优选连续油管冲砂排量,以单个砂粒在冲砂液中的受力分析为基础,建立了砂粒沉降速度计算模型;对沉降速度中关键参数进行拟合,获取了沉降速度计算公式;研究连续油管冲砂排量的计算方法,获得了不同套(油)管、不同连续油管工况下最低排量的优选模板。大港油田官882井和官1801井的冲砂施工过程中,依据优选模板,选择合适的冲砂排量,使连续油管冲砂较常规修井作业提高工作效率2.4倍。连续油管冲砂排量的优选可为合适冲砂排量的选择提供理论支撑,保证冲砂施工高效、经济地进行,为连续油管冲砂方案的制定提供理论指导。The sand settling velocity model was established after analyzing the force imposing on single sand particles in sand flushing fluid.Then key parameters related to the settling velocity were fitted to obtain a formula for calculating the settling velocity.And finally the optimal templates of the minimum sand flushing displacement under various casing(tubing)and coiled tubing working conditions were established.For Wells G882 and G1801 in Dagang Oilfield,the sand flushing displacement was estimated using the templates,as a result the coiled tubing sand flushing operation was more effective than a conventional workover by increasing 2.4 times.These templates provide theoretical support for determining appropriate sand flushing displacement.They can ensure efficient and economical sand flushing operation and are theoretical bases for designing coiled tubing sand flushing plan.

关 键 词：连续油管 冲砂 沉降速度 最低排量 优选模板 现场应用 

分 类 号：TE353[石油与天然气工程—油气田开发工程]