A small gap that can form between the casing or liner and the surrounding cement sheath, most commonly formed by variations in temperature or pressure during or after the cementing process.

在套管或衬管与周围的水泥环之间所形成的小间隙，这些间隙是由于在固井期间或固井之后温度或压力的变化所致。

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A threaded coupling used to join two lengths of pipe such as production tubing, casing or liner.

连接两节管子(生产油管、套管或衬管等)所用的带螺纹的连接件。

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To create holes in the casing or liner to achieve efficient communication between the reservoir and the wellbore.

在套管或衬管上产生孔眼，以便在储层与井筒之间实现有效的连通。

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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