针对超深稠油井生产管柱的定量验漏工艺

Quantitative Leak Checking Technology for Production String in Extra-Deep Heavy Oil Wells

传统意义上的计算迟到时间验漏法只能定性判断管柱联通点,不能定量判断出漏点的深度及漏失的严重程度,不能满足生产需求。优化后的迟到法定量验漏工艺采用套管注水方法,根据注入清水的返出时间判断油套联通点深度,同时设定多个观察参数进行综合分析,以寻找易把控的关键点。YQXX井的实践表明,优化后的迟到法定量验漏工艺能准确地判断出漏点的深度以及漏失的严重程度,且不影响正常生产,具有一定的推广价值。

The improved late quantitative leak checking technology adopts casing injection method.It is used to estimate the depth of oil casing link point according to returning time of injected clear water and comprehensively analyze simultaneously set multi-observation parameters to find out the key point easy to control.Its application in YQXX well shows that it can accurately estimate the depth of leaking point and leaking degree without affecting normal production,thus deserving expanding.