Research Institute of Petroleum Exploration & Development, PetroChina, Langfang 065007, China;
Research Institute of Petroleum Exploration & Development, PetroChina, Langfang 065007, China;
The Fourth Oil Recovery Company of North China Oilfield, Langfang 065007, China;
Research Institute of Petroleum Exploration & Development, PetroChina, Langfang 065007, China;
Research Institute of Petroleum Exploration & Development, PetroChina, Langfang 065007, China;
Research Institute of Petroleum Exploration & Development, PetroChina, Langfang 065007, China;