鄂尔多斯盆地华庆地区延长组长4+5致密油层成岩作用及成岩相
郑庆华1,2, 柳益群1,*

The Diagenesis and Diagenetic Lithofacies of Tight Reservoir of Chang4+5 Member of Yanchang Formation in Huaqing Area, Ordos Basin
Zheng Qinghua1,2, Liu Yiqun1
华庆地区长4+5砂岩岩石类型三角图
Triangular diagram showing classification of Chang 4+5 sandstone in Huaqing area