Reservoir Characteristics and Controlling Factors of the Upper Permian Changxing Formation Reef‑Shoal Carbonate Reservoirs in the Huanglongchang Structure, Eastern Sichuan Basin
The Upper Permian Changxing Formation reef-shoal carbonates in the Huanglongchang Structure, eastern Sichuan Basin, are important gas reservoirs, yet their characteristics and controlling mechanisms remain poorly understood. We integrated 481 core samples and 126 cast thin sections from 8 wells with logging, petrophysi...