The AAPG/Datapages Combined Publications Database
AAPG Bulletin
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AAPG Bulletin; Year: 2025; Issue: July DOI: 10.1306/06132522006
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Figure 14. Core photo and photomicrograph of sandstone samples showing the lithological features of sandstone with different oil saturation. (A) The sandstone with low oil saturation surrounded by sandstone with high oil saturation, well Y99, 3015.7 m (9894 ft). (B) The sandstone with low oil saturation is tightened by type II calcite cementation, well Y99, 3015.7 m (9894 ft). (C) The sandstone with high oil saturation presents little carbonate cementation and high porosity, well Y99, 3016.5 m (9896.7 ft). Es3l = lower part of the third interval of the Paleogene Shahejie.
Figure 14. Core photo and photomicrograph of sandstone samples showing the lithological features of sandstone with different oil saturation. (A) The sandstone with low oil saturation surrounded by sandstone with high oil saturation, well Y99, 3015.7 m (9894 ft). (B) The sandstone with low oil saturation is tightened by type II calcite cementation, well Y99, 3015.7 m (9894 ft). (C) The sandstone with high oil saturation presents little carbonate cementation and high porosity, well Y99, 3016.5 m (9896.7 ft). Es3l = lower part of the third interval of the Paleogene Shahejie.