The application discloses a method for combination huff and puff and production allocation of heavy oil reservoirs, and is based on the optimal liquid
discharge intensity IL of an
oil well under the plane homogeneity condition of the
concept model of the one-injection and same-production well group, considers the static condition difference and the dynamic difference after the single well huff and puff for multiple rounds, and obtains the reasonable liquid allocation of each
oil well in the one-injection and same-production well group after correction by using the dimensionless permeability, the
crude oil viscosity, the
injection pressure difference, the well spacing and other correction coefficients, thereby modifying the existing liquid
allocation method and realizing the
optimal design of the liquid allocation of each well in the well group. The application provides a way for determining the reasonable liquid allocation parameters of the one-injection and same-production development of the heavy oil reservoirs, and can guide the efficient development of the heavy oil reservoirs by the one-injection and same-production. The dimensionless correction coefficient formula constructed by the application has high reliability by comprehensively considering the dynamic and static parameters of the reservoirs, is convenient for calculation, and is more beneficial to the field application of the technical personnel in the mine. By optimizing the liquid allocation of each well in the combination huff and puff, balanced displacement in the well group is realized, and the
recovery degree can be improved by 1.6%.