这项工作介绍了从运营商的海底油井中回收的气举阀 (GLV) 的几种故障分析结果。这些阀门无法防止油管回流到环空，从而损害了油井的完整性。这些调查可以更准确地诊断 GLV 故障，从而降低问题再次发生的风险，并可以指导纠正当前设计中的脆弱性。它们还可以帮助更好地规划和定义未来的完井，从而提高这种人工举升方法的可靠性。
通常，GLV 故障是在管道完整性测试中检测到的。
This work presents the results of several failure analyses of gas lift valves (GLVs) retrieved from the operator’s subsea wells. These valves were unable to prevent backflow from tubing to annulus, thereby compromising well integrity. These investigations allow a more-precise diagnosis of GLV failures that tends to reduce the risk of problem recurrence and can guide the correction of fragilities in current designs. They also can contribute to better planning and definitions in future well completions, resulting in increased reliability for this method of artificial lift.
Usually, GLV failures are detected in tubing-integrity tests.
