Before runningcasing string, we must calculate drag in wellbore and make the feasibility analysis of runningcasing string.
在套管下入之前，必须计算套管在实钻井眼中的受力大小，预测套管柱下入的可行性。
3
Hole enlargement through the Tertiary system and the Carboniferous system in test Wells are less than 6%, therefore, got a successful completion logging and runningcasing strings.