Can replace ASME B 31.4 with ASME B 31.8 1

[mfms]

Hi Experts,


Plant designed for oil production, GOR is more than 1000, Contractor designed prodction flow line according to ASME B31.8.
pipeline designed to under ground
inlet flow mixed (hydrocarbons,water and gas)

ASME B31.8 Scope statement not to apply liquid petroleum, carbon dioxide and liquified natural gas transportation piping system. old edition

ASME B 31.4 Scope piping transporting liquids such as crude oil, condensate, natural gasoline, natural gas liquids,liquefied petroleum gas, carbon dioxide, and liquid petroleum products between producers' lease facilities, tank farms,natural gas processing plants, refineries, stations, ammonia plants, terminals. new edition.

Can Contractor apply ASME B 31.8 in oil wells between well head and processing plant?

Best Regards

 

[LittleInch]

Officially no, you can't use B 31.8. See interpretation 16-13 of B 31.8 where it excludes flowlines between wells and separation facilities.

https://www.google.co.uk/url?sa=t&r...bd9kgCzhfz1VPg&bvm=bv.136811127,d.bGs&cad=rjt

You also shouldn't officially use B 31.4 as it refers to "liquids", not two or three phase fluids.

You should use either B 31.3 or another pipeline code which does cover wellhead to plant.

In reality and as a result of a long standing belief that "gas" wells are covered by B 31.8 and "oil" wells by B 31.4, because no one reads the scope definition many many flowlines are designed to these two codes when they shouldn't have been.....

So can he do it - Yes
Should he do it - No

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