Natural gas — Upstream Area--Determination of drag reduction rate in laboratory for slick water

Natural Gas — Wet gas flow measurement in natural gas operations

Natural gas — Online gas chromatograph for upstream area

Natural gas — Upstream area — Determination of hydrogen sulfide content by laser absorption spectroscopy

Natural gas — Upstream area — Determination of composition by Laser Raman spectroscopy

Natural gas — Upstream area — Allocation of gas and condensate

Design & operation of allocation systems used in gas productions facilities