Failure life determination of oilfield elastomer seals in sour gas/dimethyl disulfide environments
- Exxon Production Research Co., Houston, TX (US)
- FMC Corp., Central Engineering Labs., Santa Clara, CA (US)
- FMC Corp., Wellhead Equipment, Houston, TX (US)
Previous screening tests of various oilfield elastomers in sour gas/dimethyl disulfide environments indicated that hydrogenated nitrile (HNBR), tetrafluoroethylene-propylene (TFE/P), ethylene-propylene-diene (EPDM), and perfluorinated rubber (FFKM) elastomers may perform satisfactorily in these environments. This paper describes subsequent failure life tests conducted with the subject elastomers in the sour gas/dimethyl disulfide test environment at several elevated temperatures (> 135{degrees}C). The materials were tested in the form of O-rings (size 214), which were used to seal an autoclave containing the test environment at 14 MPa gas pressure. The results were used to extrapolate time to failure at a common reference temperature of 135{degrees}C. The performance of EPDM and HNBR in the sour gas/dimethyl disulfide mixture substantially exceeded a projected 20-year service life at 135{degrees}C, while FFKM and TFE/P did not.
- OSTI ID:
- 6675680
- Report Number(s):
- CONF-890437--
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
022000 -- Petroleum-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
360604 -- Materials-- Corrosion
Erosion
& Degradation
CORROSIVE EFFECTS
DISULFIDES
ELASTOMERS
ETHYLENE PROPYLENE DIENE POLYMERS
FLUORINE COMPOUNDS
GEOLOGIC DEPOSITS
HALOGEN COMPOUNDS
MATERIALS
MINERAL RESOURCES
OIL FIELDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PERFORMANCE TESTING
PETROLEUM DEPOSITS
PHYSICAL PROTECTION DEVICES
POLYMERS
RESOURCES
SEALING MATERIALS
SEALS
SECURITY SEALS
SERVICE LIFE
TESTING
WELL COMPLETION