casing patch meaning in English

套管补贴
套管修补

Casing patch technique and diameter enlarging technique of casing damage wells
大庆油田套损井打通道加固技术
Connection and sealing device for new and old casings used when repairing the broken and damaged casing in well with large area , long length , as well as repairing the wrongly cut casing in well ? ? packer - type casing patch - connector
修复面积大，长度长，破裂，损坏的井内套管，修复错断的井内套管时所用的新旧套管的连接密封装置?封隔器型套管补接器。
[ english ] connection and sealing device for new and old casings used when repairing the broken and damaged casing in well with large area , long length , as well as repairing the wrongly cut casing in well ? ? packer - type casing patch - connector
修复面积大，长度长，破裂，损坏的井内套管，修复错断的井内套管时所用的新旧套管的连接密封装置?封隔器型套管补接器。