A model for analysis of wellbore stability considering the effects of weak bedding planes
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- 作者：Shiming Hea ; hesm-swpu@sohu.com" class="auth_mail" title="E-mail the corresponding author ; Wei Wanga ; dawei8960@163.com" class="auth_mail" title="E-mail the corresponding author ; Jun Zhoua ; Zhen Huanga ; b ; Ming Tanga
- 关键词：Wellbore stability ; Weak bedding planes ; Equivalent collapse density ; Influencing factors ; In-situ stresses
- 刊名：Journal of Natural Gas Science and Engineering
- 出版年：2015
- 出版时间：November 2015
- 年：2015
- 卷：27
- 期：part_P2
- 页码：1050-1062
- 全文大小：4066 K
文摘
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A new wellbore stability model considering weak bedding planes is introduced.
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The existence of weak bedding planes makes wellbore less stable.
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The dip angle and dip direction of weak bedding planes highly affect wellbore stability.
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Wellbore azimuths for low collapse pressures vary with in-situ stress regimes.