FAQ's

Non-ideal gas behavoir, HPHT wells and NACE MR0175 – partial pressure of H₂S

The Meaning of “May” in NACE MR0175/ISO 15156, Part 2, Annex C, Section C.1

Introduction

The question pertains to whether the word “may” in NACE MR0175/ISO 15156, Part 2, Annex C, Section C.1 permits other methods for calculating partial pressure, such as incorporating the effects of non-ideal gas behavior, for determining material selection.

The Answer

The answer is yes, the word “may” means that other methods can be used to calculate partial pressure, including incorporating the effects of non-ideal gas behavior. However, it’s essential to note that Annex C as a whole is “informative” rather than “normative” and isn’t mandatory.

In conclusion, the word “may” in NACE MR0175/ISO 15156, Part 2, Annex C, Section C.1 permits other methods for calculating partial pressure, including incorporating the effects of non-ideal gas behavior. However, it’s essential to note that Annex C as a whole is “informative” rather than “normative” and isn’t mandatory. At Oil & OGC Energy, we have the expertise to assist you with materials selection and partial pressure calculations for HPHT wells.

This inquiry relates to NACE MR0175/ISO 15156-2 Annex C which now is updated providing guidance on fugacity and other non ideal gas approaches.

Expertise in Materials Selection for HPHT Wells

At OGC Energy, we have the expertise to support you in selecting materials for High Pressure and High Temperature wells (HPHT), where ideal gas behavior deviates. We can evaluate the production conditions (pressure, temperature, produced water, etc.) and assess the risks and consequences to assist you with materials selection and partial pressure calculations.

Are you experiencing technical challenges that are compromising your project? Contact us now and let us to get your project back on track!

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