In accordance with the current situation of increasing number of casing failure Wells in Liaohe oil province, study on casing patch workover is carried out.
针对辽河油区目前套管损坏井不断增多的现状，开展了套管补贴大修技术研究。
The casing-patch tool is lowered into the well where rubber or lead on the end of the tool is used to seal against the top of the cut casing remaining in the well.
套管补贴工具被下入井中，这时工具端部的橡胶或铅对留在井中的被割断套管的顶部进行密封。
A tool that is used to patch damaged casing.
用于补贴被损坏的套管的工具。
A tool that is used to patch damaged casing.
用于补贴被损坏的套管的工具。
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