Fracture, Dissolution, and Cementation Events in Ordovician Carbonate Reservoirs, Tarim Basin, NW China

Figure 10

Photomicrographs of typical fluid inclusions. (a) Example of stretched inclusions: dark blue arrows highlight primary two-phase aqueous inclusions with inconsistent  :  ratios and light blue arrows highlight primary single-phase aqueous inclusions. (b) Light blue arrows highlight pseudosecondary single-phase aqueous inclusions trapped along a plane that terminates at crystal edges. (c) Dark blue arrows highlight clustered primary two-phase aqueous inclusions with homogenous  :  ratios. (d) Dark blue arrows highlight primary aqueous two-phase inclusions with homogenous  :  ratios trapped along a growth zone. (e) Dark green arrows highlight primary three-phase oil ( :  : ) inclusions trapped along a growth zone. The solid phase is a hydrocarbon solid. (f) Blue fluorescence of oil inclusions in (e) under UV light. (g) Dark green arrows highlight primary single-phase oil inclusions trapped along growth zones. The light green arrow highlights a trail of secondary two-phase oil inclusions. (h) Blue (dark green arrows) and dull orange (light green arrow) fluorescence of oil inclusions in (g) under UV light.