Oil And Gas Club
| Material | Advantages | Disadvantages | Limitations |
|---|---|---|---|
| Carbon Steel Lowest Capex |
Cheapest option Opex Involves inspection pigging Internal corrosion control through inhibition |
Corrosion rates are high Possibility of intelligent or coating Additional Opex through inhibition |
High corrosion (pigging) and external painting |
| Carbon Steel with FBE | Capex slightly more Low Opex Internal corrosion protection through lining |
Susceptible for corrosion if FBE coating is damaged Coating gets damaged if fluid contains suspended solids |
Coating holidays |
| Carbon Steel with PE lining | Capex is slightly more than CS + FEB Internal corrosion protection through lining |
Not advisable for gas lines lining collapse due to depressurization Operating Temperature limited to 65 Deg max |
Operating temp 65 Deg max |
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| Stainless Steel | No corrosion Opex is low | External corrosion protection through coating Not suitable for fluid where chloride are present |
Chlorides in fluid |
| Duplex Stainless Steel | No corrosion Opex is low High Capex |
Susceptible to stress cracking in the operating range of 80 to 120 Deg C Long lead time for procurement |
Operating temp |
| GRE | No operating Expenses No corrosion Medium Capex |
Limitation due to temperature pressure Inspection limitation Line to be buried only No pigging possible |
Temp & Pressure |
| CS + CRA internal clad | No corrosion Can tolerate highly wet sour conditions |
High Capex materials Sourcing problems |
Welding |
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