The model consists of perforation, wellbore, cement casing, oil layer, micro-annulus and transverse fracture.
模型中包括射孔孔眼、套管、水泥环、油层、微环隙和横向裂缝。
Objective. To reveal the macro and micro structure of the translamellar bridging network in the lumbar annulus.
目的：观察腰椎纤维环经板层网桥的大体和显微结构。
The purpose of cement bond log (CBL) under increasing borehole pressure is to differentiate micro annulus from bypass channel.
在井内加压下进行水泥胶结测井带压作业，其目的是将微环空与串槽区分开。
The purpose of cement bond log (CBL) under increasing borehole pressure is to differentiate micro annulus from bypass channel.
在井内加压下进行水泥胶结测井带压作业，其目的是将微环空与串槽区分开。
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