目前,我国已普查勘探的陆相油气田,其储油岩绝大部分为碎屑岩的砂岩。由于沉积环境复杂,岩性岩相多变,成岩后生作用不一,形成的各类砂岩的储集性能差异很大。 At present, China has censured the continental oil and gas fields under exploration and most of its oil-bearing rocks are clastic sandstone. Due to the complex sedimentary environment, the lithology and lithofacies vary, the diagenetic and epigenetic effects are different, and the formation of various types of sandstone reservoir performance vary widely.