Facies And Diagenesis Of Tabalar And Tendehantu Carbonate Formation In Mangkalihat Peninsula Area: An Outcrop Preliminary Study To Oligocene – Miocene Reservoir Candidate Prospect

Authors

  • Risman Adhitiya Faculty of Geology, University Padjadjaran Author
  • Merza Media Adeyosfi Bandung Institute of Technology Author
  • Syahreza S. Angkasa Faculty of Geology, University Padjadjaran Author
  • Felix Sihombing Bandung Institute of Technology Author

DOI:

https://doi.org/10.47599/bsdg.v7i2.105

Keywords:

facies, diagenesis, Tabalar Formation, Tendehantu Formation, carbonate

Abstract


Mangkalihat peninsula is located between Kutai and Tarakan basins, which known as two Hydro Carbon (HC) Prolific basins in Eastern Borneo. The petroleoum system in this area is poorly known because of the different system between Kutai and Tarakan Basin. The field study is focusing in the eastern part of Mangkalihat Peninsula, where The Tabalar and Tendehantu Formation are exposed. The data compilation is from outcrop, thin section and plug sample which permeability and porosity values were measured by Klickenberg method. Outcrop analysis showed that Tendehantu Formation can be divided into two lithofacies, whileTabalar Formation has only one lithofacies. The petrographic thin section analysis showed three microfacies from the two formations. Pore destruction caused by diagenesis can de indicated with the presence of bladed and equant cement in vuggy pores, while the diagenetical development of porosity is marked by the microfracturing that was assumed to be formed by compaction and deep burial and matrix dissolution in some of the samples. Petrography and plug sample data integration shows the quality value of those carbonate rock as a reservoir from the permeability and porosity parameter. Based on the microfacies grouping showed in three microfacies, the porosity value is 5.26 - 17.32 % (tight to good), and permeability value is 0.041 – 7.27mD (fair – poor). The carbonate rock quality is influenced by the whole diagenetic processes that happened in each lithofacies.

References

Mangkalihat peninsula is located between Kutai and Tarakan basins, which known as two Hydro Carbon (HC) Prolific basins in Eastern Borneo. The petroleoum system in this area is poorly known because of the different system between Kutai and Tarakan Basin. The field study is focusing in the eastern part of Mangkalihat Peninsula, where The Tabalar and Tendehantu Formation are exposed. The data compilation is from outcrop, thin section and plug sample which permeability and porosity values were measured by Klickenberg method. Outcrop analysis showed that Tendehantu Formation can be divided into two lithofacies, whileTabalar Formation has only one lithofacies. The petrographic thin section analysis showed three microfacies from the two formations. Pore destruction caused by diagenesis can de indicated with the presence of bladed and equant cement in vuggy pores, while the diagenetical development of porosity is marked by the microfracturing that was assumed to be formed by compaction and deep burial and matrix dissolution in some of the samples. Petrography and plug sample data integration shows the quality value of those carbonate rock as a reservoir from the permeability and porosity parameter. Based on the microfacies grouping showed in three microfacies, the porosity value is 5.26 - 17.32 % (tight to good), and permeability value is 0.041 – 7.27mD (fair – poor). The carbonate rock quality is influenced by the whole diagenetic processes that happened in each lithofacies.

Downloads

Published

2012-08-08

Issue

Vol. 7 No. 2 (2012): Buletin Sumber Daya Geologi

Section

Buletin Sumber Daya Geologi

License

Authors whose manuscripts are published in Buletin Sumber Daya Geologi agree to the following terms:

  1. Publication rights to all published materials are held by Buletin Sumber Daya Geologi with the knowledge of the authors, while the moral rights remain with the authors.
  2. All articles are published under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0).
  3. Under this license, anyone may copy, redistribute, and adapt the work for non-commercial purposes, provided that appropriate credit is given to the authors and the journal, a link to the license is provided, any changes are indicated, and adapted works are distributed under the same license.
  4. Commercial use of the published material requires written permission from the publisher.
  5. Authors may deposit the published version of their article in institutional repositories, personal websites, or academic networks, provided that the original publication in Buletin Sumber Daya Geologi is acknowledged with its DOI.