In the lower part of Member 3 of Shahejie Formation, the main reservoir types are fan-delta and sublacustrine fan facies. 沙三段下亞段主要儲層沉積相類(lèi)型為扇三角洲相和湖底扇相。
Reservoir porosity is mainly influenced and controlled by sedimentary facies and diagenesis. 儲層孔隙度主要受沉積相和成巖作用的影響和控制。