前言油水井是采油和注水的唯一通道。随着油田开发进入中后期,由于地层出砂、腐蚀、高压注水、高压措施施工频繁及地层泥岩膨胀、地层应力变化等众多因素的影响,油水井套管损坏数量日益增多,严重影响了油田的正常开发生产。一般而言,错断和弯曲,修复难度较大,成功率较 Introduction Oil and water wells are the only channel for oil production and water injection. With the development of oilfields in the middle and later stages, due to the influence of many factors such as sand production, corrosion, high-pressure water injection and high-pressure water injection, high-pressure measures and the expansion of formation mudstone, the stress of formation changes and so on, the number of casing damage in oil wells increases day by day. Normal development and production. In general, the wrong and bending, repair more difficult, the success rate