Re-evaluation of hydrocarbon generation potential of the Upper Paleozoic coal-measure source rocks in the Hangjinqi area of Ordos Basin - Chunhua NI; Jianhui ZHU; Guangxiang LIU; Fubin WANG; Huichong JIA; Wei ZHANG; Yingli WU; Jiujun MIAO (Shiyou shiyan dizhi, 2021)