- Protect the wellbore: Prevent wellbore collapse and mutual interference of formation fluids.
- Support wellbore equipment: Such as tubing, sucker rods, etc.
- Separate different horizons: Realize separate layer mining and processing.
- Convey and protect oil and gas flow: Ensure the smooth conveyance of oil and natural gas.
- Used in well completion operations: Perform operations such as cementing after drilling is completed.
