gas differential liberationgas drillinggas drive methodgas drive pressure gas drivegas escape gas liberation gas dischangegas factorgas factor gas oil rationgas flaringgas free oilgas gushergas injectiongas injection well gas input wellgas injectivity profile loggas invasion of the wellgas liftgas lift flowgas lift valvegas lift wellgas liquefactiongas lockgas maingas mantlegas mixergas oil contact linegas oil displacementgas outburstgas permeabilitygas pipe gas pipe linegas pocketgas pressure gagegas producing well gas well gassergas productiongas pumpgas recovery tankgas recycling presence of gasgas samplergas saturated limestonegas saturated pressuregas saturationgas scrubbergas seeps gas seepagegas segregationgas separationgas separator gas trapgas slippagegas storagegas tankgas valvegaseous hydrocarbongasifying gasificaiton gas generation
