State;
Key;
Lab;
Oil;
and;
Gas;
Reservoir;
Geology;
and;
Exploration,;
Chengdu;
University;
of;
Technology,;
Chengdu,;
Sichuan;
Prov;
ince,;
610059,;
China;
College;
of;
Information;
Engineering,;
Chengdu;
University;
of;
Teehnology,;
Chengdu,;
Sichuan;
Province,;
610059,;
China;