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在复杂地层钻进时,往往要下入套管加以护孔,如何便于日后起拔这些套管,减少套管报废,已成为当前钻探中的一项重要工作。现将我公司一些队的有关做法介绍如下,供同志们参考。
When drilling in complicated formations, it is often necessary to drill into the casing to protect the casing. How to facilitate the removal and removal of the casing in the future has become an important task in current drilling. I now some of the company’s practices are introduced below for comrades reference.