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Sour volatile component loss under associated gas sample storage

Arystanbekova S.A., Lapina M.S., Volynskiy A.B. (OOO Gazprom VNIIGAZ, RF, Moskovskaya obl.)


The paper examines sampler material effects on loss of sour volatile components in low-pressure associated gas. When stainless steel and titanium alloy samplers are used, such components are likely to be completely lost under sample transportation. It was found that under standard nitrogenrich gas mixtures storage in Tedlar bags, the loss of some volatile components could reach 1015% by the 10th storage day. However, the averages for such sour components over 10 days appear to remain under 6%. The authors believe that the main difference between these data and ASTM D 550408 guidelines in particular, to avoid keeping Tedlar bags longer than 24 hours is likely attributable to progressive improvements with bag materials.


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