Differential Mechanisms of Tight Sandstone Reservoirs and Their Impact on Gas-Bearing Characteristics in the Shaximiao Formation, Southwestern Sichuan Basin
This research examines pore structure characteristics affecting gas-bearing properties in the Sichuan Basin, indicating key factors influencing reservoir quality.
Key Points
To identify controls on gas-bearing property heterogeneity in tight sandstone reservoirs of the Shaximiao Formation.
Systematic examination of pore structure characteristics
Utilization of cast thin sections and X-ray diffraction
High-pressure mercury injection analysis
Assessment of homogeneity and variation coefficients
Identified lithic arkose as the predominant reservoir lithology
Recognized major factors influencing reservoir quality as sediment provenance and diagenetic minerals
Differentiated gas content variability related to reservoir heterogeneity and pore structure differences