Materials Capable of Withstanding 420,000 PPM H2S
Materials Capable of Withstanding 420,000 PPM H2S
(OP)
Any recommendations of high strength (90 ksi or so) materials capable of withstanding 420,000 PPM (42 %) H2S and 8 % CO2 at 400 degrees F (bottom hole temperature) at 17,000 psi pressure (bottom hole pressure) for an oilfield downhole application? We typically use 4140 HT or 17-4 PH stainless at H900 condition for our downhole tools, but these will become hydrogen embrittled. Thanks in advance for any ideas!





RE: Materials Capable of Withstanding 420,000 PPM H2S
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RE: Materials Capable of Withstanding 420,000 PPM H2S
Regards,
Cory
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RE: Materials Capable of Withstanding 420,000 PPM H2S
The first question to ask is: will these tools see any liquid water? The second is: are there any chlorides around? The third is: any elemental sulphur?
Armed with that knowledge, one can then look at ISO 15156.
Steve Jones
Materials & Corrosion Engineer
http://www.pdo.co.om/pdo/
RE: Materials Capable of Withstanding 420,000 PPM H2S
RE: Materials Capable of Withstanding 420,000 PPM H2S
The "C" alloys are probably not strong enough. Age-hardening of Inconel 625 is one option you can try out.
RE: Materials Capable of Withstanding 420,000 PPM H2S
Detailed materials and fabrication guidance can be found in NACE Publication 8X194.
Regards
luis marques