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油田地热资源评价和开发利用一直是我国陆上沉积盆地内中-低温水热型地热资源研究的重点工作。本文介绍了油田地热资源评价的基本思路和评价方法,并以大庆油田、华北油田和辽河油田为例,通过地温场研究、热储特征分析、岩石热物性测试,按照新建立的油田地热资源评价分级体系,重新评价了油田区的地热资源量。3大油田区11个层系地质资源总量为10 934×10~(18)J,地热水资源量为86 607×10~8 m~3,其中,可采水资源量为19 322×10~8 m~3,可采地热能资源为425×10~(18)J。根据油田采出水和综合利用等5种开发利用方式,评估了油田地热能开发潜力,为我国地热资源评价和油田地热规模化开发奠定了基础。
The evaluation and exploitation of geothermal resources in oilfields have been the focus of geothermal resources research in the terrestrial-low-temperature hydrothermal geothermal resources in China’s onshore sedimentary basins. This paper introduces the basic ideas and evaluation methods of geothermal resources evaluation in oilfields. Taking Daqing Oil Field, Huabei Oilfield and Liaohe Oilfield as examples, this paper analyzes the characteristics of geothermal resources in geothermal field by geotemperature field research, thermal storage characteristic analysis and petrophysical property test, Grading system, to re-evaluate the geothermal resources in the oil field area. The total amount of geological resources in 11 layers of 3 large oilfields is 10 934 × 10 ~ (18) J, and the amount of geothermal water is 86 607 × 10 ~ 8 m ~ 3, among which the recoverable water resources are 19 322 × 10 ~ 8 m ~ 3, recoverable geothermal resource is 425 × 10 ~ (18) J. According to the five development and utilization methods of oilfield production and comprehensive utilization, the potential of geothermal energy development in oilfields is evaluated, which lays the foundation for geothermal resources assessment and geothermal scale development in China.