长输管道弹性敷设应力测试与分析  

Stress Test and Analysis of Elastic Laying of Long-distance Pipeline

作　　者：张今明 李睿 饶彬 郭晓栋 刘军 万振中 ZHANG Jinming;LI Rui;RAO Bin;GUO Xiaodong;LIU Jun;WAN Zhenzhong(Daqing Oilfield Design Institute Co.,Ltd.;South Xinjiang Limin Oil and Gas Operation Center of Southwest Tarim Exploration and Development Company;Beijing Kelihua'an Geological Hazard Monitoring Technology Co.,Ltd.;Huagang Gas Group Co.,Ltd.;Technology Research Institute of No.2 Oil Production Plant of Daqing Oilfield Co.,Ltd.)

机构地区：[1]大庆油田设计院有限公司,黑龙江省大庆市163712 [2]塔西南勘探开发公司南疆利民油气运行中心 [3]北京科力华安地质灾害监测技术有限公司 [4]华港燃气集团有限公司 [5]大庆油田有限责任公司第二采油厂工艺研究所

出　　处：《油气田地面工程》2023年第3期62-66,共5页Oil-Gas Field Surface Engineering

摘　　要：为确定长输管道弹性敷设及下沟过程前后的应力状态,采用基于实测数据的力学分析与有限元仿真的方法对局部管段开展了弹性敷设过程应力测试,确定了管道敷设应力水平与成因。研究结果表明:管道在敷设过程中表现出较大弯曲应力,且弯曲方向频繁变化,施工过程对弹性敷设管道应力状态有显著影响;在管道敷设过程中应避免较长的悬空段,适当增强管道约束,优化施工流程;为降低敷设应力,建议超过一定大角度弯头的管段采用沟下组焊等对管道应力影响较小的施工方式。该研究有助于加深对管道弹性敷设应力的认识,可为管道应力监测提供依据。In order to determine the stress state of long-distance pipeline before and after elastic laying and trenching,the stress test of local pipeline sections during elastic laying is carried out by using the method of mechanical analysis and finite element simulation based on the measured data,and the stress level and causes of pipeline laying are determined.The research results show that the pipeline shows large bending stress during the laying process,and the bending direction changes frequently.The construction process has a significant impact on the stress state of the elastic laying pipeline.Long suspended sections should be avoided in the process of pipeline laying,properly strengthen pipeline constraints and optimize the construction process.In order to reduce the laying stress,it is suggested that the pipe section exceeding a certain large angle elbow should adopt the construction methods such as under ditch assembly welding which have little impact on the pipeline stress.This study is helpful to deepen the understanding of the elastic laying stress of pipelines,and can provide a basis for the stress monitoring of pipelines.

关 键 词：长输管道 弹性敷设 拉应力 压应力 有限元仿真 

分 类 号：TE973[石油与天然气工程—石油机械设备]