钢管2018，Vol.47Issue(3)：76-80,5.
某油田含腐蚀坑缺陷油管适用性评价方法研究
Evaluation Method for Applicability of Tubing with Corrosion Pits in Certain Oil Field
李光辉 1李林涛 2张杰 2陈晓华 2张军杰 2吕庆钢 3王军1
作者信息
- 1. 西安三维应力工程技术有限公司,陕西 西安 710065
- 2. 中石化西北油田分公司石油工程技术研究院,新疆 乌鲁木齐 830011
- 3. 中石化西北油田分公司物资供应管理中心,新疆 轮台 841600
- 折叠
摘要
Abstract
A research is performed on major types of defects and applying working conditions of tubings with corrosion pits in a certain oil field.Using the structure service safety and reliability theory as an analyzing method, the chemical composition and properties of the defected tubings with corrosion pits are evaluated through material performance test, real product tesile test, internal-pressure burst test and external-pressure collapse test.Applying the 3σ criterion and comparing with the investigations of the working conditions, the terms for defected tubings to be applicable under different well conditions of a certain oil field are determined.The results show that the material properties of a repaired tubing meet the requirements of API Spec 5CT-2011, the tensile load and anti-internal-pressure strength meet the requirements of SY/T 6417-2016, while the anti-external-collapse properties of 50％ of the samples do not meet the requirements of SY/T 6417-2016.Defected tubings can meet the load requirements under working conditions such as rod puming well, submersible pump well and low-pressure flowing well.Real application results approve that the above-mentioned evaluation method is reliable.关键词
油管/腐蚀坑/拉伸失效/外压失效/内压失效/3σ准则Key words
tubing/corrosion pit/tensile failure/external pressure failure/internal pressure failure/3σ criterion分类
矿业与冶金引用本文复制引用
李光辉,李林涛,张杰,陈晓华,张军杰,吕庆钢,王军..某油田含腐蚀坑缺陷油管适用性评价方法研究[J].钢管,2018,47(3):76-80,5.
