Abstract: The geothermal resources and petroleum coexist in Binhai New Area, Tianjin. In order to exploit and reduce the exploitation risk of the geothermal resources in oil field, the authors analyzed the thermal storage, geothermal field, sedimentary facies and fluid chemistry, and summaried the enrichment mechanism of thermal reservoir in Dongying Formation. The thermal fluid exploitation resources for 100 years were calculated by the numerical model, and the exploitation potential was evaluated. Then on the basis of the exploitation potential, the factor weight of oil-rich degree, size and temperature of geothermal resources in the favorable exploration areas was analyzed. The favorable exploration areas were partitioned. This research has important significance in the exploration of deep geothermal resources and the reduction of development risk in the oil area.