施加到地层上、引起井眼内流体进入到地层中去的压力大小。
The magnitude of pressure exerted on a formation that causes fluid to be forced into the formation.
将以上方法应用于塔里木油田水平井测井解释中，确定了井眼轨迹与地层的相对位置，计算了地层水平电阻率的大小。
This method has been used in the horizontal well logging interpretation in Tarim oilfield to identify the relative position between well track and strata and to calculate the horizontal resistivity.
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。
Before running casing string, we must calculate drag in wellbore and make the feasibility analysis of running casing string.
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