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不压井射孔
不压井射孔是一种负压射孔。实施射孔作业时,采油树上装有“防喷盒”,故不需要泥浆压井。优点是,射孔作业简单,完井周期短,在射孔的同时,孔道得到清洗,因而地层污染小,产油率高
expl.
live well perforation
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