Chemical Effect on Wellbore Instability of Nahr Umr Shale

Wellbore instability is one of the major problems that hamper the drilling speed in Halfaya Oilfield. Comprehensive analysis of geological and engineering data indicates that Halfaya Oilfield features fractured shale in the Nahr Umr Formation. Complex accidents such as wellbore collapse and sticking...

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Bibliographic Details
Main Authors: Baohua Yu, Chuanliang Yan, Zhen Nie
Format: Article
Language:English
Published: Wiley 2013-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1155/2013/931034
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