Studies of Production under Bubblepoint

Studies of production under bubblepoint including both experiments and simulations are presented. A novel approach for modelmg of critical gas saturation is described. Depletion rate dependent critical gas saturation gave a different GOR development on individual Wells, and seems also to better match the production bistory. Experimental studies have investigated how production under bubblepoint effects the oil recovery. Waterflooding at condition below bubblepoint was compared to standard waterfloods above bubblepoint. The paper also summarize critical gas saturation data measured by different experimental techniques and conditions, and discusces the effect of different factors on the critical gas saturation.