Liqun Shan
School of physics and electronic engineering, Northeast Petroleum University, Daqing 163318, P. R. China; Petroleum engineering department, University of Louisiana at Lafayette, Lafayette 70504, USA;

Xueyuan Bai
School of physics and electronic engineering, Northeast Petroleum University, Daqing 163318, P. R. China;
China

Chengqian Liu
School of physics and electronic engineering, Northeast Petroleum University, Daqing 163318, P. R. China;
China

Yin Feng
Petroleum engineering department, University of Louisiana at Lafayette, Lafayette 70504, USA;
United States

Yanchang Liu
School of physics and electronic engineering, Northeast Petroleum University, Daqing 163318, P. R. China;
China

Yanyan Qi
Xiangyang Branch of China Telecom Co. LTD, Xiangyang 441011, P. R. China;
China