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The Scientific World Journal
Volume 2013, Article ID 931034, 7 pages
Research Article

Chemical Effect on Wellbore Instability of Nahr Umr Shale

1State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China
2Exploration & Production Research Institute, CNPC, Beijing 100011, China

Received 15 July 2013; Accepted 8 September 2013

Academic Editors: A. M. Efstathiou and A. Vorontsov

Copyright © 2013 Baohua Yu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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