The system can save insulating cost and reduce heat loss using heat-exchanger in well bore and casing heat-exchanger on surface.

该系统采用采水井内换热器和地面套管式换热器，既可节省保温费用，又可减少散热损失。

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A reasonable mechanical design of the main die body was given on the basis of considering every determining factors such as the bore hole condition (casing or not).

并根据井眼条件(有无套管)等方面因素，对打捞主体的机械结构进行了合理设计。

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Meanwhile, underground cycle temperature is also related to the pressure balance in a well, the stability of well bore and the design of casing and string.

同时它还与井内压力平衡，井壁稳定，套管和钻柱强度设计密切相关。

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The cement goes between the outside of the casing and the well bore.

FORBES: The Fracking Solution Is A Good Cement Job

Then there is Halliburton, which was contracted to cement the production liner in the well casing, effectively sealing off the reservoir from the well bore.

FORBES

Halliburton ( HAL - news - people ), which was contracted to cement the production liner in the well casing, effectively sealing off the reservoir from the well bore.

FORBES: The Gulf Oil Leak