Key;
Laboratory;
of;
Oil;
and;
Gas;
Geology;
and;
Exploration,;
Southwest;
Petroleum;
University,;
Chengdu;
610500,;
China;
of;
Geoscience;
and;
Technology,;
Southwest;
Petroleum;
University,;
Chengdu;
610500,;
China;
Institute;
of;
Petroleum;
Exploration;
and;
Development,;
SINOPEC;
Zhongyuan;
Oilfield;
Company,;
Puyang;
457001,;
China;
飞仙关组鲕滩; 普光气田; 中国西南; 四川盆地; 水库; 电子显微镜观察; 天然气储量; 起源;