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Ivan Gutierrez discusses what conditions should be used for calculating H2S partial pressure when considering sour service. What is NACE MR0175 intent when it comes to H2S partial pressure? operating or design pressure to be used in the calculations?   ...
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Corrosion Control using a Corrosion Management Program At Oil & Gas Corrosion, we help clients to control corrosion of oil and gas assets via the implementation of a Corrosion Management Program (CMP). Corrosion never stops, but corrosion control can be achieved by developing and implementing a ...
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Stainless Steel World magazine invited us to write an article about NACE MR0175 and the stainless steel industry, this article was published in the June 2016 issue. Stainless steel producers and distributors involved in the oil & gas industry are often required to supply materials that meet the ...
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Recent Safety Alerts from the Bureau of Safety and Environmental Enforcement Two recent safety alerts have been issued by the Bureau of Safety and Environmental Enforcement, Connector and Bolt Failures Chemical Injection Point Corrosion Causes Production Header Failure In February a ...
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3D Printing, also referred to as additive manufacture, is frequently considered the next big step in metallurgy and materials; some companies are already engaged in understanding how 3D printing will impact the oil and gas industry, but what are the implications of using 3D printing components in ...
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On April 6th 2016 the first Technical Circular of ANSI / NACE MR0175 / ISO 15156 2015 was published, you can download a free copy of this technical circular via the ISO 15156 maintenance panel or through the NACE website. Technical circulars are there to keep the document updated in between ...
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The Health and Safety Executive has issued a research report on the analysis of failures of riser emergency shutdown valves (RESDVs). Riser emergency shutdown valves (RESDVs) are an essential risk reduction measure for offshore installations and are a legal requirement under the Pipelines Safety ...
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The Offshore Installation Regulations (Offshore Safety Directive) (Safety Case etc.) Regulations 2015 (also referred as SCR 2015) came into force in July 2015, and a recent guidance from the Health and Safety Executive has been published and it is available for download in the HSE website. The SCR ...
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Operators are facing a difficult time due to the low oil price and everyone wants to discuss cost reduction strategies. This turndown is lasting longer than anyone expected forcing operators to carry out several rounds of cost cutting exercises. CAPEX investments have been slashed as this FT report ...
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Several months ago I had a chat with a couple of reporters from Reuters, they were working on a piece related to the Elgin gas release and they were interested in learning a bit of corrosion of downhole components. They produce their news article and I decided to share it in this post. From a ...
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I was fortunate to attend an event organised on behalf of The Geological Society. For me, the main reason to attend this event was to get a good overview of the current state of the shale opportunities in the UK and the best place to start is to talk to those in charge of studying and interpreting ...
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This questions pops up frequently: What are the “NACE” requirements for drilling equipment? i.e. drill pipe, drill collars, and crossovers? The answer is not about metallurgy. According to ISO 15156 / NACE MR0175, drilling equipment is protected not by controlling the metallurgy but by controlling ...
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The results from the well test are in and you just confirmed (or found out) that there is H2S in the production fluids and now everything must be “NACE compliant”, whatever that means! The tough questions will start: Does it really have to be CRA (Corrosion Resistant Alloys)? Can we get away with ...
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Duplex and Superduplex  stainless steels are objects of love and hate. We hate their prices, we love their corrosion performance and we hate the long complicated specifications that come along with them. Love them or hate them there are many applications that require the use of these ...
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Sour service corrosion basics, or how bad can one bad apple be… If you buy 20 barrels of apples and you only got one bad apple, well it can’t be that bad? May be it’s ok for apples, but that same proportion can be deadly when it comes to H2S; I know this might not be the best use of mathematical ...
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