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

Fig. 7. Characteristics of fluid inclusions in calcite filling in basement fractures at depth of 2362.80 m in Well B40 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 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.