GRE casing for corrosive oilfield wells
GRE (glass reinforced epoxy) casing is a nonmetallic downhole option where steel casing faces corrosion, workover cost, or weight constraints. CNPS supplies GRE casing that can be designed and produced according to customer demands for casing-damage well repair, water-source wells, and CBM straight wells, among other applications called out on this page.
Relative to metal casing, GRE resists many corrosive fluids and is lighter to handle and run. Existing production-range notes on this product reference diameter DN100–DN250 and pressure grating 10 MPa–25 MPa, with product standards aligned to API 15HR Specification for High Pressure Fiberglass Line Pipe and SY/T 6267-2006. Confirm the exact size, pressure class, and medium for your well before ordering.
Key applications
- Casing damage well repair
- Water source wells
- CBM straight wells
- Other corrosive or weight-sensitive casing programs (confirm with CNPS)
What to confirm with CNPS
- Size / rating / medium / standards you need (e.g. DN range, pressure class, API 15HR or project-specific)
- Connection type and running procedures for your rig
- Service temperature and fluid chemistry
