现场应用表明，双级梯度多凝水泥浆固井技术能减少施工压力，防止压漏地层；
The slurry has been used in field and the results showed that operating pressure was reduced and formation breakdown was prevented;
高含硫地质环境下钻井溢流发生时，及时关井非常重要，但关井产生的水击压力，可能使防喷器超压，而且易在井内最薄弱的环节发生压漏地层事故。
However, the water hammer pressure produced upon well shut-in will possibly exert over-high pressure on BOP, and the weak points in the well are subject to being fractured.
分析了两例以原发性低颅压综合症为临床表现的自发性脑脊液鼻漏患者的临床资料，并复习这两类疾病的相关文献。
The clinical data of two cases of spontaneous intracranial hypotension syndrome caused by spontaneous cerebrospinal fluid leak were analyzed, and the literatures of these two disease were reviewed.
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