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Title Failure life determination of oilfield elastomer seals in sour gas/dimethyl disulfide environments
Creator/Author Kennelley, K.J. ; Abrams, P.I. (Exxon Production Research Co., Houston, TX (US)) ; Vicic, J.C. (FMC Corp., Central Engineering Labs., Santa Clara, CA (US)) ; Cain, D. (FMC Corp., Wellhead Equipment, Houston, TX (US))
Publication Date 1989 Jan 01
OSTI Identifier OSTI ID: 6675680
Report Number(s) CONF-890437--
Resource Type Conference
Specific Type Book
Resource Relation Conference: Corrosion '89, New Orleans, LA (USA), 17-21 Apr 1989; Other Information: Technical Paper 89212
Subject 02 PETROLEUM; 36 MATERIALS SCIENCE; DISULFIDES; CORROSIVE EFFECTS; ELASTOMERS; SECURITY SEALS; SERVICE LIFE; ETHYLENE PROPYLENE DIENE POLYMERS; FLUORINE COMPOUNDS; OIL FIELDS; PERFORMANCE TESTING; SEALING MATERIALS; WELL COMPLETION; GEOLOGIC DEPOSITS; HALOGEN COMPOUNDS; MATERIALS; MINERAL RESOURCES; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; PETROLEUM DEPOSITS; PHYSICAL PROTECTION DEVICES; POLYMERS; RESOURCES; SEALS; TESTING
Description/Abstract 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.
Publisher Houston, TX (USA); National Assoc. of Corrosion Engineers
Country of Publication United States
Language English
Format Medium: X; Size: Pages: (12 p)
Availability National Assoc. of Corrosion Engineers, P.O. Box 218340, Houston, TX 77218 (USA)
System Entry Date 2008 Feb 08

 

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