Microscopic Water Drive Mechanism of Glutcnite Reservoirs in Shuanghe Oilfield

The microscopic water -oil displacement experiments indicate that owing to there are the flow around a body and interruption of water front at conglomerates, recovery factor in glutenite reservoirs of Shuanghe Oilfield is lower than ordinary sandstore oilfield, residual oil distributes mainly in area unswept of medium and low permeability and occurred * Haines Jumps" place. Through pollumer injection can reduce effects of heterogeneity of reservoirs and the residual oil saturation by forming of "Haines Jumps", arises recovery factor over 12%.