高含硫天然气集输管道点蚀缺陷安全评价方法研究  

Study on Safety Evaluation Technology of High Sulfur Content Gas Gathering and Transportation Pipeline With Pitting Corrosion

作　　者：周玉辉 郭西水 唐洁[4] 周华峰 文丽晨 ZHOU Yuhui;GUO Xishui;TANG Jie;ZHOU Huafeng;WEN Lichen(College of Petroleum Engineering, Yangtze University, Wuhan 430100, China;National Coal Chemical Product Quality Supervision and Inspection Center, Huainan Anhui 834000, China;Petroleum Engineering Technology Research Institute of Sinopec Zhongyuan Oilfield, Puyang Henan 232001, China;No.1 Oil Production Plant, PetroChina Xinjiang Oilfield Company, Karamay Xinjiang 834000, China)

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]国家煤化工产品质量监督检验中心(安徽),安徽淮南834000 [3]中国石化中原油田分公司石油工程技术研究院,河南濮阳232001 [4]中国石油新疆油田公司采油一厂,新疆克拉玛依834000

出　　处：《重庆科技学院学报（自然科学版）》2019年第3期50-54,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项“高含硫气藏安全高效开发技术(三期)”(2016ZX05017-004)

摘　　要：高含硫天然气集输管道材质为抗硫不锈钢,点蚀是它的主要腐蚀缺陷。基于材料力学强度理论,综合考虑安全、成本、经济效益等因素,提出了计算含点蚀缺陷集输管道最大安全工作压力的方法。在管道智能检测和高风险管段开挖验证数据基础上,引进缺陷深度修正系数,优化安全评价模型,增强安全风险评价参数的可靠性。同时,引入高含硫集输管道设计系数,明确了腐蚀缺陷级别和安全预警值。采用某高含硫气田含点蚀缺陷集输管道的有关参数和检测数据,运用所建安全评价模型进行计算,通过ANSYS软件建模进行验证,所建安全评价模型精度达98%。High sulfur-containing natural gas gathering pipeline is made of sulfur-resistant stainless steel, and pitting corrosion is the main corrosion defect. Based on the theory of material mechanical strength, comprehensive consideration of the safety, cost and economic benefit, the method for calculating the maximum safe working pressure of gathering and transportation pipeline with pitting defects is presented. Based on pipeline intelligent detection and high-risk pipe excavation verification data, the correction coefficient of defect depth is introduced to optimize the safety evaluation model and enhance the reliability of safety risk assessment parameters. Meanwhile, the design coefficient of high sulfur-containing natural gas gathering pipeline is introduced, and the corrosion defect level and safety warning value are clarified. Using the relevant parameters and test data of pitting corrosion pipelines in a high-sulfur gas field, and the safety evaluation model is used in calculation. At the same time, the calculation is verified by ANSYS software modeling. The precision of the safety evaluation model reaches 98%.

关 键 词：含硫天然气 集输管道 点蚀 安全工作压力 安全评价模型 

分 类 号：TE973[石油与天然气工程—石油机械设备]