1. Institute of Porous Flow and Fluid MechanicsUniversity of Chinese Academy of Sciences Beijing 100049 China
2. Institute of Porous Flow and Fluid MechanicsChinese Academy of Sciences Langfang Hebei 065007 China
3. PetroChina Research Institute of Petroleum Exploration and Development Langfang Hebei 065007 China
4. Natural Gas Production and Marketing Plant Sinopec Zhongyuan Oil Field Puyang Henan 457162 China