The reason of high nitrogen content and low hydrocarbon content of shalegas from the Lower Cambrian Niutitang Formation in southeast Chongqing
Jiao Wei-wei,Wang Sheng-xiu,Cheng Li-jun,Luo Qing-yong,Fang Guang-jian
Natural Gas Geoscience . 2017, (12): 1882 -1890 .  DOI: 10.11764/j.issn.1672-1926.2017.11.017