Abstract: There are a variety of development schemes that can be used to exploit gas-cap reservoir, and there are many factors to influence its production performance. According to the basic de-velopment rules of gas-cap reservoir, based on the realfield data, we studied the reasonable development scheme, injection-pro-duction ratio, recovery rate, oil rate of well adjacent to GOC
and the optimum time to produce gas-cap gas. For the first time, the oil loss was calculated and discussed. As a result, a couple of development policy for gas-cap reservoir were present-ed:①The injection-production system should be improved and the gas and oil should produced evenly;②The oil in oil ring
must be first produced, then the gas in gas-cap can be produced 4 years later;③The oil well adjacent to GOC should be put in- to production at a low rate;④The gas and oil should be pro-duced simultaneously if the gas reserve in gas-cap is relatively larger than that of oil.

Key words: gas-cap reservoir, development policy, tech-nical strategy