[1]Exploration and Development Research Institute of PetroChina Changqing Oilfield Company;
Xi’an 710018;
China;
[2]National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields;
Xi’an 710018;
China;
[1]Exploration and Development Research Institute of PetroChina Changqing Oilfield Company;
Xi’an 710018;
China;
[2]National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields;
Xi’an 710018;
China;
[1]Exploration and Development Research Institute of PetroChina Changqing Oilfield Company;
Xi’an 710018;
China;
[2]National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields;
Xi’an 710018;
China;
[1]Exploration and Development Research Institute of PetroChina Changqing Oilfield Company;
Xi’an 710018;
China;
[2]National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields;
Xi’an 710018;
China;
[1]Exploration and Development Research Institute of PetroChina Changqing Oilfield Company;
Xi’an 710018;
China;
[2]National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields;
Xi’an 710018;
China;
[1]Exploration and Development Research Institute of PetroChina Changqing Oilfield Company;
Xi’an 710018;
China;
[2]National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields;
Xi’an 710018;
China;
[1]Exploration and Development Research Institute of PetroChina Changqing Oilfield Company;
Xi’an 710018;
China;
[2]National Engineering Laboratory for Exploration and Development of Low-permeability Oil & Gas Fields;
Xi’an 710018;
China;
ultra-low permeability oil reservoir; well pattern adaptability; comprehensive evaluation parameter; Ordos Basin; Triassic; Chang 6 Formation; Chang 8 Formation;