The oil-water transition zone of heavy oil reservoir is relatively wide，which has considerable amount of remaining oil and great development potential. However，restricted by economic and technical conditions，it is hard to build up the well pattern and produce reserves effectively for low control degree of well pattern. Through quantitative study of the influence of viscosity on the distribution in oil-water transition zone，the oil saturation distribution of the oil-water transition zone and oil-producing law of oil wells in the heavy oil reservoir were analyzed. Based on this，considering the influence of economic factors，a method of determining economic and technical limits of oil well production in the oil-water transition zone was proposed. According to practical oilfield characteristics and development requirements，economic and technical limits chart of the oil well production in W oil reservoir were established. The chart will provide guidance to the effective disposition of infilled adjustment well in the oil-water transition zone of W oil reservoir.