J Fu, S Li, Q Guo, W Guo, X Zhou, J Liu - Acta Petrolei Sinica, 2022 - syxb-cps.com.cn
PetroChina Changqing Oilfield Company has discovered Qingcheng oilfield in the source
rock stratum of Member 7 of Triassic Yanchang Formation in Ordos Basin; it is a billion-ton …