Sour Gas Resistant Materials
| PPE Material Grade | Material Type | Description | NORSOK M710 2% H2S | NORSOK M710 25% H2S | NACE TM0187 | ISO 10423 (API 6A) |
|---|---|---|---|---|---|---|
| EnDura® A90H | FEPM | Aflas based copolymer | Fail*† | Tested† | Not Tested | Fail*† |
| EnDura® G92E | FFKM | RGD & chemical resistant grade | Pass | Tested † | Not Tested | Pass |
| EnDura® V91A | FKM | Ultra-low temperature | Pass | Tested† | Pass | Pass |
| EnDura® V91K | FKM | Low temperature grade | Pass | Tested† | Pass | Pass |
| EnDura® V91J | FKM | General purpose grade | Pass | Tested† | Pass | Pass |
| EnDura® Z95X | HNBR | General purpose grade | Pass | Not Tested | Pass | Pass |
*Failure is caused by reaction to aromatic hydrocarbons rather than H2S.
†Contact PPE for further details.
| NORSOK M710 2% H2S | NORSOK M710 25% H2S | NACE TM0187 | ISO 10423 (API 6A) | ||
|---|---|---|---|---|---|
| Test vessel composition: Gas phase Oil phase Water phase | 30% 60% 10% | 30% 60% 10% | 90% 5% 5% | 35% 60% 5% | |
| Gas phase composition: Volume (%) | 2% H2S 3% CO2 95% CH4 | 25% H2S 3% CO2 72% CH4 | FKM 20% H2S 5% CO2 75%CH4 | HNBR 5% H2S 20% CO2 75% CH4 | 10% H2S 80% CO2 10% CH4 |
| Oil phase composition: Volume (%) | 10% toluene 20% cyclohexane 70% heptane | 10% toluene 20% cyclohexane 70% heptane | 25% hexane 20% octane 50% decane 5% toluene | 100% kerosene | |
| Water phase composition: Volume (%) | 100% distilled water | 100% distilled water | 100% ASTM S1193 Type IV | 100% deionised water | |
| Test specimen location | Oil phase | Oil phase | Gas phase | Oil phase | |
| Temperature | Various from 100 to 200°C | Various from 150 to 175°C | 150°C FKM 100°C HNBR | 177°C | |
| Test duration | 8 weeks | 8 weeks | 160 hours | 160 hours | |