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Leak Rates

Started by VikingUK, Nov 19 2009 05:41 AM

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#1 VikingUK

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Posted 19 November 2009 - 05:41 AM

Does anyone know if there is a API standard for the maximum allowable leak rate (in grams/min or litres/min) for downhole safety valves (sssv) and other xmas tree valves ? I have seen 425 litres/min quoted but this seems high.

#2 ankur2061

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2,484 posts

Posted 19 November 2009 - 05:59 AM

Does anyone know if there is a API standard for the maximum allowable leak rate (in grams/min or litres/min) for downhole safety valves (sssv) and other xmas tree valves ? I have seen 425 litres/min quoted but this seems high.

VikingUK,

The figure mentioned by you doesn't seem off the mark. Get hold of API RP 14C & take a look at Table D-2 of Appendix D of the standard. All 14 series API practices are for offshore (more stringent) but can be safely used for onshore operations.

Regards,
Ankur.

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