[1]Instttute of Exploration Techniques;
China Geological Survey;
Langfang 065000;
China;
[1]Instttute of Exploration Techniques;
China Geological Survey;
Langfang 065000;
China;
[2]China University of Geosciences (Wuhan);
Wuhan 430074;
China;
[1]Instttute of Exploration Techniques;
China Geological Survey;
Langfang 065000;
China;
[1]Instttute of Exploration Techniques;
China Geological Survey;
Langfang 065000;
China;
[2]China University of Geosciences (Wuhan);
Wuhan 430074;
China;
[1]Instttute of Exploration Techniques;
China Geological Survey;
Langfang 065000;
China;
[1]Instttute of Exploration Techniques;
China Geological Survey;
Langfang 065000;
China;
[2]China University of Geosciences (Wuhan);
Wuhan 430074;
China;
[1]Instttute of Exploration Techniques;
China Geological Survey;
Langfang 065000;
China;
Songke Well No.2; Long drilling process; Large diameter; Super-high-temperature water-based mud; Nondastruetive core diseharge;