Study on waterflooding regularity of heavy oil reservoir in Henan oilfield

Starting from the geological characteristics of heavy oil reservoir and production feature of steam stimulation, based on the core analysis and testing data of development core inspection well,with the methods of reservoir engi- neering,mathematic statistic,field well logging analysis and core calibration logging,the logging interpretation pattern of reservoir lithology and physical property with high accuracy is established.After studying the water- flooding characteristic of heavy oil,the qualitative and quantitative method to confirm the regularity is deter- mined,and its distribution regularity on the vertical and horizontal direction at present is summarized,which pro- vides geological basis for field development plan,stimula- tion and tapping potential at later stage of oilfield produc- tion.