The main reason is that cavitation erosion occurred in pervasion pipe of lubricator.
经检查发现,主要原因是注油器扩散管汽蚀,以致注油器工作不正常,润滑油压偏低.
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Pay close attention to the conditions of lubricator and down - hole SSV, etc. during operation.
作业期间,密切注意防喷管工作状况, 井下安全阀压力等.
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