School of Geosciences and Technology Southwest Petroleum University Chengdu 610500 China;
Research Institute of Petroleum Engineering PetroChinaTarim Oilfield Company Korla 841000 China;
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(Southwest Petroleum University) Chengdu 610500 China;
Development Department PetroChina Tarim Oilfield Company Korla 841000 China;
Natural Gas Department PetroChina Tarim Oilfield Company Korla 841000 China;