Refracturing well selection method for ultra-low permeability reservoir based on multi-parameter coupling

Institute of Geology, No. 4 Oil Production Plant, Daqing Oilfield Company, Heilongjiang Province, Daqing 163511, China

Abstract

At present, with the continuous increase in the development of ultra-low permeability reservoirs, fractures are prone to closure during the initial fracturing operation, which will affect the fracture conductivity to a certain extent, and the oil well production shows a gradual decline trend, and the water content of the target oil well is gradually increased. Therefore, in order to ensure a better recovery rate of ultra-low depth oil reservoir, it is necessary to use re-fracturing reconstruction technology for some low-production oil Wells, so as to gradually improve the conductivity of fractured fractures near the target oil well and restore the actual productivity of a single well, which is conducive to realizing the stable production of ultra-low permeability oil reservoir.