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read here The expansion bellows are run into the wells, using hydraulic or mechanical ways to turn the bellows into permanent circular tubes to seal absorption wells, coal bed and other complex wells and repair damaged casings, while still maintaining the original wellbore size.
Application
- Seal leakage formation
- Seal instable formation/ coal bed
- Reduce the casing layers
- Repair the damaged casings
Features
- Simplified technology, short cycle
- Cost saving
- Maintain the original wellbore
Massive Structure
