文档介绍：Swagelok Technology Summit
Materials Review for Oil and
Gas Industries
Shelly Tang, .
Lead Metallurgical Engineer
Swagelok
Swagelok Technology Summit
Presentation Outline
Part I Materials for Oil and Gas Exploration and
Production
Part II Materials for Hydrogen Applications
- Joint research with Sandia National Laboratories
Swagelok Technology Summit
Part I
Materials for Oil and Gas
Exploration and Production
Swagelok Technology Summit
Trends in Oil and Gas Exploration
• Deeper wells
• Deepwater – off shore
-
• Sour extraction, H2S, CO2, Cl , S
• Higher temperature (up to 500°F)
• Higher pressure (up to 25,000psi)
Swagelok Technology Summit
Required Materials Properties
• Strength
• Corrosion resistance, to sea water
and sour environment
• Elevated temperature properties
Oxidation resistance
Mechanical properties
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Materials Used by Oil & Gas Industries
Hardness limit by NACE
Materials Alloy elements σσ
y uts (HRc)*
SS 316 17Cr-13Ni- 30 75 Solution annealed (22)
Alloy 400 63Ni-31Cu 25 70 35
SS254 20Cr-18Ni-6Mo 44 95 Solution annealed (22)
42Ni-22Fe-22Cr-
Alloy 825 35 85 40
3Mo-2Cu
SS2507 25Cr-7Ni- 80 116 Solution annealed
58Ni-21Cr-9Mo-
Alloy 625 60 120 40
Alloy 57Ni-15Cr-16Mo-
41 100 40
C276 5Fe-4W
Note: σy and σuts : yield and tensile strengths, respectively
* Limits are for general services. Downhole and instrument service limits may be less stringent
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Materials (Continued)
Materials PREN* CPT(°C) CCT (°C) SCC In Cl-
SS 316 22 (26) 10 <0 Concern
Excellent
Alloy 400 - - -
resistance
Better
254 35 (44) →70 →30
resistance
Improved
SS2507** 39 (43) 80 35
resistance
Good
Alloy 825 26 (31) 30 5
resistance
Excellent
Alloy 625 41 (51) ≥85 35
resistance
Excellent
Alloy C276 45 (68) >85 50
resistance
*PREN1 = %Cr + (%Mo + %W + %Nb) + 30 × %N, mostly use