Relationship between fracturing and porogenesis in a carbonate reservoir: Example from the Middle Turonian Bireno Member in Jebel M’rhila, Central Tunisia
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- 作者：Hajer Haj Alia ; hajalihajer@yahoo.fr" class="auth_mail" title="E-mail the corresponding author ; Hanen Belghithib ; c ; belghithihanene@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Jamel Abdennaceur Oualid ; jamelabdennaceur.ouali@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Jamel Touira ; jamel.touir11@gmail.com" class="auth_mail" title="E-mail the corresponding author
- 关键词：Dolomites ; Platform ; Reservoir ; Porosity ; Fracturing ; Bireno member ; Jebel M&rsquo ; rhila ; Central Tunisia
- 刊名：Journal of African Earth Sciences
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：121
- 期：Complete
- 页码：342-357
- 全文大小：8209 K
文摘
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The Studied dolomites primarily consist of subhedral to euhedral dolosparite.
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The porosity is increasing laterally while going toward the fractures and vertically from the base to the top of the dolomitic member, which shows the role of the fracturing in the porogenesis.
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The mineralogical and geochemical analyses of dolomite carried out respectively by X-ray diffraction and atomic absorption show that the studied dolomites broadly range from a sub-stoechiometric dolomite (48%) far from the fractures to a dolomitic calcite (84%) near the fractures.
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Therefore, it seems that if the Bireno dolomitic member is rather a good reservoir, it is thanks to the associated networks of fractures.