Major Factors Controlling Reservoir Quality of the Upper Triassic Chang2 Sandstones in the Qinghuabian Oilfield，Northern Shaanxi

FENG Juan-ping，LI Wen-hou，OUYANG Zheng-jian，YU Fang，CAO Hong-xia，ZHAO Yang

Journal of Jilin University(Earth Science Edition) . 2008, (3): 417 -0424 .