^pof;
Environmental;
Science;
and;
Engineenng,;
Southwest;
Jiaotong;
University,;
Chengdu;
610031,;
P.;
R.;
China;
^pand;
Design;
Institute;
of;
Chengdu;
Military;
Region;
Air;
Force,;
Chengdu;
610041,;
P.;
R.;
China;
^pof;
Management;
and;
Economics,;
University;
of;
Electronic;
Science;
and;
Technology;
of;
China,;
Chengdu;
610054,;
P.;
R.;
China;
^pand;
Environmental;
Protection;
Department,;
Southwest;
Oil;
and;
Gas;
Field;
Branch,;
China;
National;
Petroleum;
Corporate,;
Chengdu;
610051,;
P.;
R.;
China;
