The cuttings require disposal and cannot be recovered, which results in mud loss as well as disposal costs.

返出的岩屑需要处理，而且不能回收利用，这不仅加大了泥浆损失，还增加了处理成本。

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One kind of simple and easy make alarm for well kick and mud loss is presented. Its work principle, installation, calibration and performance are introduced.

介绍一种经济实用的、制作简易的钻井泥浆液井涌井漏报警仪。文中分述了它的工作原理、安装方法、调试方法以及可能达到的技术状态。

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Using under balance pressure drilling technique aims at preventing the mud loss and pollution of Palaeozoic limestone reservoir in this area and therefore protecting oil reservoir.

该井四开钻探过程中成功地采用欠平衡钻井技术钻穿寒武系凤阳山组，以防止该区古生界灰岩储层发生井漏及储层污染，从而保护油层。

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During the pumping and displacement of the heavyweight spacer used to displace the mud, a breach in pressure integrity resulted in the undetected loss of drilling mud into the probably uncemented well-bore.

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