Li B, Wei Q, Sang P, Chen L, Bao Y, Tan C. Types and Characteristics of Sedimentary Facies of the Chang 7 Oil Reservoir Group in Heshui Area of the Ordos Basin. SJT [Internet]. 2025 Nov. 21 [cited 2026 Aug. 1];7(11):109-15. Available from: https://sjtechnology.org/index.php/ojs/article/view/255