1. Zhanjiang Branch of CNOOC,Zhanjiang,China,524000
2. Yangtze University,School of Geosciences,Wuhan,China,430100
3. PetroChina,Research Institute of Petroleum Exploration and Development,Beijing,China,100083
4. PetroChina Tarim Oilfifield Company,Institute of Petroleum Exploration and Development,Korla,China,841000