任何的渗漏或损坏都将造成控制管线压力的损失，这时关闭安全阀并确保井的安全。

Any leak or failure results in loss of control line pressure, acting to close the safety valve and render the well safe.

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新鲜岩心由井中取出后立即密封以减小流体损失和暴露空气的时间。

A fresh core is sealed as soon as possible after retrieval from the well to minimize the loss of fluids and exposure to air.

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采用水力模拟的方法对两个不同结构尺寸的污水泵站高位井的水流流态、泥沙淤积及水头损失等进行了模型试验。

The flow regime, sediment deposition and the loss of head of two head tanks of the sewage pumping station with different dimensions are studied by using a hydraulic model test method.

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