套损监测技术在鄂尔多斯盆地的应用

The application of casing damage monitoring technology in Ordos basin

随着油气田开发,各种不同因素造成油套管出现变形、损坏和腐蚀等问题,严重影响油气田正常生产。华北工程测井分公司采用MID-K电磁探伤与多臂井径测井技术结合进行套损监测,不仅可以判断油套管变形特征,确定管壁的损伤腐蚀程度,而且可以检查井内管柱结构,评价套管损伤速度及寿命预测。目前该技术在大牛地、麻黄山、杭锦旗、新疆等区块广泛应用,累计成功测井70多井次,成功解决了大批生产井内存在的井漏、油套管腐蚀、损伤、结垢及管柱变形等工程难题,在油套管损伤部位综合治理和改造、提高油气井产能、增加油套管的使用寿命、降低修井成本等方面效果显著。

With the development of oil and gas fields,oil casing deformation,damage and corrosion problems caused by various factors have seriously affected the normal production of oil and gas.Electromagnetic inspection of MID-K and multi-arm caliper logging technology used by North China Engineering Logging Branch in casing damage monitoring can not only estimate oil casing deformation characteristics and confirm the degree of corrosion damage of pipe wall but also check the well limb structure,evaluate the speed of casing damage and predict the casing life.At present,the technology is widely used in many blocks such as Daniudi,Mahuangshan,Hangjinqi and Xinjiang and has been successfully used in more than 70 wells.Engineering problems in production wells like well leakage,column deformation and oil casing deformation,damage,corrosion and crust are effectively solved.Significant effects have been proved in comprehensive treatment of damage parts in such aspects as oil casing,remoulding and improving oil and gas well production capacity,enhancing the service life of oil casing and reducing the workover cost.