Fluid interaction mechanism and diagenetic reformation of basement

Fluid interaction mechanism and diagenetic reformation of basement reservoirs in Beier Sag, Hailar Basin, China LI Juan, WEI Pingsheng, SHI Lanting, CHEN Guangpo, PENG Wei, SUN Songling, ZHANG Bin, XIE Mingxian, HONG Liang 1. Petro. China Research Institute of Petroleum Exploration & Development-Northwest, Lanzhou 730000, China 2. Key Laboratory of Petroleum Resources of CNPC, Lanzhou 730000, China 3. Exploration & Development Research Institute, Daqing Oilfield Company Ltd. , Daqing 163712, China Fig. 7. Characteristics of fluid inclusions in calcite filling in basement fractures at depth of 2362. 80 m in Well B 40 of Beier Sag. (Numbers in figures represent homogenization temperature in inclusions). (a) Cataclastic andesite tuff, with primary saline inclusions in calcite filling early fractures, gas-liquid two-phase; (b) Cataclastic andesite tuff, with primary saline inclusions in calcite filling early fractures, gas-liquid two-phase; (c) Cataclastic andesite Petroleum Exploration and Development Editorial Board, 2020, 47(1), 46 -58. DOI: 10. 1016/S 1876 -3804(20)60004 -0 tuff, with secondary saline inclusions in calcite filling early fractures, gas-liquid two-phase; (d) Cataclastic andesite tuff, with secondary saline inclusions in calcite filling late fractures, gas-liquid two-phase; (e) Cataclastic andesite tuff, with secondary oil inclusions in calcite, gas-liquid two-phase; (f) Cataclastic andesite tuff, with secondary oil inclusions in calcite emitting blue-green fluorescence, with a main peak wavelength of 520 nm.