
第35卷第11期(2016.11)集输处理
长输油管道砂沉积模拟实验及临界流速计算分析
王成,
鲁玲1
罗峰,
部庆
张宗超
摘要:为了研完海底长输油管道运行过程中管道砂(泥)沉积特性及临界流建变化规律,以渤海某油田原油外输海管为例,通过砂(泥)沉积特性模拟实验及沉积临界流速理论计算,确认了海管内砂沉积特性及管道缩径的可能性,并得出非均匀颗粒砂流积最大临界流速为0.463m/s,均匀颗粒砂沉积临界流速为2.39m/s。研究表明,海底长输油气管道在长期运行过程中,管线内泥砂沉积可能造成管线缩径,该研完结果可为海管内检测以及完整性管理提供理论指导。
关键词:长输油管道;砂沉积;模拟实验;临界流速;计算分析 Doi : 10.3969/j.issn.10066896.2016.11.015
Simulation Experiment of Sand Deposition and Calculation Analysis of Critical Velocity in Long Distance Oil Pipeline
Wang Wei, Lu Yu, Luo Feng, Guo Qing, Zhang Zongchao
Abstract: In order to study the varietion of sand sedimentary characteristics and critical ve locity in the running process of the Long distance oil pipeline.Teke Bohai X Oilfield oil transportation pipeline as an example, through the sand sedimentary characteristics of simula tion experiment and the theory calculation of critical velocity, the characteristics of sand de position in the sea pipe and the possibility of reducing the diameter of the pipe are confirmed It is concluded that non uniform granular sand deposition and maximum critical velocity is 0.463 m/s, uniform sand particles deposition critical velocity is 2.39 m/s.The research shows that in the long running process of the submarine long oil pipeline, the sediment deposi tion in the pipeline may cause the shrinkage of the pipeline. The research results can provide theoretical guidance for the detection and the integrity management of the submarine pipeline. Key words: long distance oil pipeline; sand deposition; simulation experiment; critical ve locity; calculation and analysis
海底长输油气管道的完整性对海上油田安全生产具有重要意义"-。然而,海底长输油气管道在长期运行过程中,输送介质中夹带少量杂质、污油泥等在管线内沉积-},使管道砂(泥)沉积特性、临界流速变化规律、流通面积、输送能力等预测更加复杂,给海底长输油管道内检测以及海上油田安全生产带来极大隐患-7。因此,有必要对管道砂(泥)流积特性及临界流速变化规律进行研究B-9 以渤海某油田原油外输海管为例,通过砂(泥)沉积特性模拟实验及沉积临界流速理论计算,探讨管道砂(泥)沉积特性及临界流速等变化规律,为海
管内检测以及完整性管理提供理论指导。
海管参数设计参数
1.1
渤海某油田外输海管设计参数:长度69.5km,容积12455m,管道内管外径OD508mm,外管外径0D660.4mm/508mm,内管壁厚15.9mm,外管壁厚12.7mm/15.9mm(ID476.2mm),内管钢级为 API5LX60.外管钢级为API5LX52/API5LX60,埋深1.5m,设计压力12MPa,最大操作压力8.8MPa,最大操作温度75℃,最大液体流量22359.1md,水深31m,海床温度-1.4~25.6%℃。
基金论文:渤海石油管理局生产科研项目(2012BHTJ-P-017)部分研究成果。中海石油(中国)有限公司天津分公司
油气田地面工程https/wwwayqtdmgc.com 万方数据
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