4吋套油井防落卡管柱的研究

Study on 4-inch Set of Oil Leakage

针对4吋套井悬挂器以上Φ73mm加大油管断落,接箍卡入4吋套悬挂器端口内,造成油井大修或报废,设计了大直径防落卡装置。结合4吋套悬挂器内径有92mm及102mm两种,设计的防落卡装置最大外径为108mm。目前的防砂、防腐管柱技术比较成熟,管柱落井风险降低,但是丝堵易腐蚀落井,针对以上问题,开展了4吋套油井防落卡管柱的研究。现场应用表明,该技术可以有效防止管柱落井,减少作业打捞工序,节约作业费用。

In order to increase the tubing of Φ73mm above the 4-inch casing hanger, the coupling clamp is inserted into the4-inch hanger suspension port, which causes the oil well to be overhauled or discarded.The large diameter anti-drop device is designed.Combined with 4-inch hanger hanging inside the diameter of 92mm and 102mm two, designed drop card device maximum diameterof 108mm.The current sand control, anti-corrosion column technology is more mature, the risk of falling column, but the wire blockeasily corroded, in response to the above problems, carried out a 4-inch oil trap anti-drop tube column research.Field application showsthat the technology can effectively prevent the column sinking, reduce the operation salvage process, saving operating costs.