Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin)

Armand Kiki; Christophe Kaki; Gérard Alfred d’Almeida; Suzanne Amelina; Blandine Biaou

doi:doi:10.11648/j.ogce.20221002.13

| Peer-Reviewed

Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin)

Armand Kiki, Christophe Kaki, Gérard Alfred d’Almeida, Suzanne Amelina, Blandine Biaou

Published in International Journal of Oil, Gas and Coal Engineering (Volume 10, Issue 2)

Received: 13 January 2022 Accepted: 10 February 2022 Published: 29 April 2022

Views: Downloads:

Download PDF

Share This Article

Twitter
Linked In
Facebook

Abstract

The Dahomey Embayment, made up of a series of coastal basins, is one of the petroleum provinces of the Gulf of Guinea. Its central part, represented by the coastal sedimentary basin of Benin, contains sediments of Paleozoic to Late Quaternary age. The present study based on geological and geochemical data, analyzed by a multidisciplinary interpretative approach, aims at highlighting the petrographic specificities and the petroleum potential of the Neocomian age deposits of the Benin coastal basin. This approach made it possible to obtain significant results. Thus, the microscopic study of about ten samples of the formation revealed that it consists of clays, silty clays and sandstone. In addition to the presence of minerals indicating the metamorphic and magmatic origin of the sediments, certain clayey levels contain organic matter and others, particular stratifications that may favour the migration of hydrocarbons. The geochemical results from the pyrolysis at Rock-Eval6 of twenty-two clay samples showed that they are source rocks with a good petroleum potential (TOC between 0.35 and 3.36%) and mature with Tmax values between 435°C and 448°C. The kerogen of the source rock is of type II and II/III with S2 and HI values which vary respectively from 1.2 to 11.2mgHC/g rock and 102 and 518mgHC/g TOC. These results (petrographic and geochemical) show the specificities and petroleum potential of the Neocomian deposits in the Benin coastal sedimentary basin.

Published in	International Journal of Oil, Gas and Coal Engineering (Volume 10, Issue 2)
DOI	10.11648/j.ogce.20221002.13
Page(s)	59-67
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Neocomian Deposits, Benin Coastal Basin, Organic Matter, Source Rock

References

[1]	Brownfield M. E. and Charpentier R. R. (2006): Geology and Total petroleum systems of the Gulf of Guinea Province of West Africa: U.S Geological Survey Bulletin 2207-C, 32 p.
[2]	IHS (2013): Benin Embayment. Report, 59 p.
[3]	Da Costa P. Y. D., Johnson A. K. C., Affaton P. (2013): Les terrains paléozoïques et mésozoïques du bassin côtier togolais: Stratigraphie et Paléogéographie. Stan. Sci. Res. Essays, Vol 1, 14, p 415-429.
[4]	TettehTeye J. (2016): The Cretaceous Play of Tano Basin, Ghana. International Journal of Applied Science and Technology Vol. 6, No. 1; 10 p.
[5]	Billman H. G. (1976): Offshore stratigraphy and paleontology of Dahomey Embayment, West Africa. Paper prepared for the 7th African. Micropaleontological Colloquim. Ile-Ife, Nigeria, 29 p.
[6]	Saga (1984): Benin Basin Evaluation. Report, 336 p.
[7]	Kaki C., D’Almeida G. A. F., Yalo N. and Amelina S. (2012): Geology and Petroleum Systems of the Offshore Benin Basin (Benin), Oil & Gas Science and Technology – Rev. IFP Energies nouvelles, Vol. 68 (2013), 2, pp 363-381.
[8]	Behar F., Beaumont V., de Penteado H. L. (2001): Rock-Eval6 technology: Performances and developments. Oil and Gas Science and Technology 56, p 111-134.
[9]	Peters K. E. (1986): Guidelines for evaluating petroleum source rock using programmed pyrolysis. Am. Assoc. Pet. Geol. Bull, 70: 318-329p.
[10]	Jan du Chêne R. (1998): Geology and sequence stratigraphy of the Benin basin. Report ABACAN, 68 p.
[11]	International Petroleum Limited (IPL) (1991): Offshore Benin Blocks 1 and 2: Technical Evaluation. Report, 57 p.
[12]	Haack R. C., Sundararaman P., Diedjomahor J., Xiao H., Gant N. J., May E. D., Kelsch K. (2000): Niger Delta petroleum systems, Nigeria. In: Mello, M. R., Katz, B. J. (ed), Petroleum Systems of South Atlantic Margins, Memoir American Association of Petroleum Geologists, 73, Chapter 16. American Association of Petroleum Geologists, Tulsa, OK, United States, p 213-231.
[13]	Trindade L. A. F., Brassel S. C., Santos Neto E. V. (1992): Petroleum Migration and Mixing in the Potiguar basin, Brasil. The American Association of Petroleum Géologists Bulletin. Vol. 76. No. 12, p 1903-1924.
[14]	ANP (National Agency of Petroleum, Natural Gas and Biofuels) (2014): Potiguar basin presentation, 106p.
[15]	Espitalié J., Deroo G., Marquis F. (1985b): La pyrolyse Rock-Eval et ses applications. Oil & Gas Science and Technology- Rev. IFP, 40, 6, pp 755-783.

Cite This Article

Plain Text BibTeX RIS

APA Style

Armand Kiki, Christophe Kaki, Gérard Alfred d’Almeida, Suzanne Amelina, Blandine Biaou. (2022). Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin). International Journal of Oil, Gas and Coal Engineering, 10(2), 59-67. https://doi.org/10.11648/j.ogce.20221002.13

Copy | Download

ACS Style

Armand Kiki; Christophe Kaki; Gérard Alfred d’Almeida; Suzanne Amelina; Blandine Biaou. Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin). Int. J. Oil Gas Coal Eng. 2022, 10(2), 59-67. doi: 10.11648/j.ogce.20221002.13

Copy | Download

AMA Style

Armand Kiki, Christophe Kaki, Gérard Alfred d’Almeida, Suzanne Amelina, Blandine Biaou. Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin). Int J Oil Gas Coal Eng. 2022;10(2):59-67. doi: 10.11648/j.ogce.20221002.13

Copy | Download

@article{10.11648/j.ogce.20221002.13,
  author = {Armand Kiki and Christophe Kaki and Gérard Alfred d’Almeida and Suzanne Amelina and Blandine Biaou},
  title = {Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin)},
  journal = {International Journal of Oil, Gas and Coal Engineering},
  volume = {10},
  number = {2},
  pages = {59-67},
  doi = {10.11648/j.ogce.20221002.13},
  url = {https://doi.org/10.11648/j.ogce.20221002.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20221002.13},
  abstract = {The Dahomey Embayment, made up of a series of coastal basins, is one of the petroleum provinces of the Gulf of Guinea. Its central part, represented by the coastal sedimentary basin of Benin, contains sediments of Paleozoic to Late Quaternary age. The present study based on geological and geochemical data, analyzed by a multidisciplinary interpretative approach, aims at highlighting the petrographic specificities and the petroleum potential of the Neocomian age deposits of the Benin coastal basin. This approach made it possible to obtain significant results. Thus, the microscopic study of about ten samples of the formation revealed that it consists of clays, silty clays and sandstone. In addition to the presence of minerals indicating the metamorphic and magmatic origin of the sediments, certain clayey levels contain organic matter and others, particular stratifications that may favour the migration of hydrocarbons. The geochemical results from the pyrolysis at Rock-Eval6 of twenty-two clay samples showed that they are source rocks with a good petroleum potential (TOC between 0.35 and 3.36%) and mature with Tmax values between 435°C and 448°C. The kerogen of the source rock is of type II and II/III with S2 and HI values which vary respectively from 1.2 to 11.2mgHC/g rock and 102 and 518mgHC/g TOC. These results (petrographic and geochemical) show the specificities and petroleum potential of the Neocomian deposits in the Benin coastal sedimentary basin.},
 year = {2022}
}

Copy | Download

TY  - JOUR
T1  - Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin)
AU  - Armand Kiki
AU  - Christophe Kaki
AU  - Gérard Alfred d’Almeida
AU  - Suzanne Amelina
AU  - Blandine Biaou
Y1  - 2022/04/29
PY  - 2022
N1  - https://doi.org/10.11648/j.ogce.20221002.13
DO  - 10.11648/j.ogce.20221002.13
T2  - International Journal of Oil, Gas and Coal Engineering
JF  - International Journal of Oil, Gas and Coal Engineering
JO  - International Journal of Oil, Gas and Coal Engineering
SP  - 59
EP  - 67
PB  - Science Publishing Group
SN  - 2376-7677
UR  - https://doi.org/10.11648/j.ogce.20221002.13
AB  - The Dahomey Embayment, made up of a series of coastal basins, is one of the petroleum provinces of the Gulf of Guinea. Its central part, represented by the coastal sedimentary basin of Benin, contains sediments of Paleozoic to Late Quaternary age. The present study based on geological and geochemical data, analyzed by a multidisciplinary interpretative approach, aims at highlighting the petrographic specificities and the petroleum potential of the Neocomian age deposits of the Benin coastal basin. This approach made it possible to obtain significant results. Thus, the microscopic study of about ten samples of the formation revealed that it consists of clays, silty clays and sandstone. In addition to the presence of minerals indicating the metamorphic and magmatic origin of the sediments, certain clayey levels contain organic matter and others, particular stratifications that may favour the migration of hydrocarbons. The geochemical results from the pyrolysis at Rock-Eval6 of twenty-two clay samples showed that they are source rocks with a good petroleum potential (TOC between 0.35 and 3.36%) and mature with Tmax values between 435°C and 448°C. The kerogen of the source rock is of type II and II/III with S2 and HI values which vary respectively from 1.2 to 11.2mgHC/g rock and 102 and 518mgHC/g TOC. These results (petrographic and geochemical) show the specificities and petroleum potential of the Neocomian deposits in the Benin coastal sedimentary basin.
VL  - 10
IS  - 2
ER  -

Copy | Download

Author Information

Armand Kiki

Department of Earth Sciences, Faculty of Sciences and Technology, University of Abomey, Calavi, Benin
Christophe Kaki

Department of Earth Sciences, Faculty of Sciences and Technology, University of Abomey, Calavi, Benin
Gérard Alfred d’Almeida

Department of Earth Sciences, Faculty of Sciences and Technology, University of Abomey, Calavi, Benin
Suzanne Amelina

Ministry of Water and Mines, Cotonou, Benin
Blandine Biaou

Ministry of Water and Mines, Cotonou, Benin

Download PDF

Sections

Plain Text BibTeX RIS

APA Style

Armand Kiki, Christophe Kaki, Gérard Alfred d’Almeida, Suzanne Amelina, Blandine Biaou. (2022). Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin). International Journal of Oil, Gas and Coal Engineering, 10(2), 59-67. https://doi.org/10.11648/j.ogce.20221002.13

Copy | Download

ACS Style

Armand Kiki; Christophe Kaki; Gérard Alfred d’Almeida; Suzanne Amelina; Blandine Biaou. Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin). Int. J. Oil Gas Coal Eng. 2022, 10(2), 59-67. doi: 10.11648/j.ogce.20221002.13

Copy | Download

AMA Style

Armand Kiki, Christophe Kaki, Gérard Alfred d’Almeida, Suzanne Amelina, Blandine Biaou. Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin). Int J Oil Gas Coal Eng. 2022;10(2):59-67. doi: 10.11648/j.ogce.20221002.13

Copy | Download

@article{10.11648/j.ogce.20221002.13,
  author = {Armand Kiki and Christophe Kaki and Gérard Alfred d’Almeida and Suzanne Amelina and Blandine Biaou},
  title = {Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin)},
  journal = {International Journal of Oil, Gas and Coal Engineering},
  volume = {10},
  number = {2},
  pages = {59-67},
  doi = {10.11648/j.ogce.20221002.13},
  url = {https://doi.org/10.11648/j.ogce.20221002.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20221002.13},
  abstract = {The Dahomey Embayment, made up of a series of coastal basins, is one of the petroleum provinces of the Gulf of Guinea. Its central part, represented by the coastal sedimentary basin of Benin, contains sediments of Paleozoic to Late Quaternary age. The present study based on geological and geochemical data, analyzed by a multidisciplinary interpretative approach, aims at highlighting the petrographic specificities and the petroleum potential of the Neocomian age deposits of the Benin coastal basin. This approach made it possible to obtain significant results. Thus, the microscopic study of about ten samples of the formation revealed that it consists of clays, silty clays and sandstone. In addition to the presence of minerals indicating the metamorphic and magmatic origin of the sediments, certain clayey levels contain organic matter and others, particular stratifications that may favour the migration of hydrocarbons. The geochemical results from the pyrolysis at Rock-Eval6 of twenty-two clay samples showed that they are source rocks with a good petroleum potential (TOC between 0.35 and 3.36%) and mature with Tmax values between 435°C and 448°C. The kerogen of the source rock is of type II and II/III with S2 and HI values which vary respectively from 1.2 to 11.2mgHC/g rock and 102 and 518mgHC/g TOC. These results (petrographic and geochemical) show the specificities and petroleum potential of the Neocomian deposits in the Benin coastal sedimentary basin.},
 year = {2022}
}

Copy | Download

TY  - JOUR
T1  - Petrographic Specificity and Petroleum Potential of Neocomian Deposits in the Central Part of Dahomey Embayment (Benin)
AU  - Armand Kiki
AU  - Christophe Kaki
AU  - Gérard Alfred d’Almeida
AU  - Suzanne Amelina
AU  - Blandine Biaou
Y1  - 2022/04/29
PY  - 2022
N1  - https://doi.org/10.11648/j.ogce.20221002.13
DO  - 10.11648/j.ogce.20221002.13
T2  - International Journal of Oil, Gas and Coal Engineering
JF  - International Journal of Oil, Gas and Coal Engineering
JO  - International Journal of Oil, Gas and Coal Engineering
SP  - 59
EP  - 67
PB  - Science Publishing Group
SN  - 2376-7677
UR  - https://doi.org/10.11648/j.ogce.20221002.13
AB  - The Dahomey Embayment, made up of a series of coastal basins, is one of the petroleum provinces of the Gulf of Guinea. Its central part, represented by the coastal sedimentary basin of Benin, contains sediments of Paleozoic to Late Quaternary age. The present study based on geological and geochemical data, analyzed by a multidisciplinary interpretative approach, aims at highlighting the petrographic specificities and the petroleum potential of the Neocomian age deposits of the Benin coastal basin. This approach made it possible to obtain significant results. Thus, the microscopic study of about ten samples of the formation revealed that it consists of clays, silty clays and sandstone. In addition to the presence of minerals indicating the metamorphic and magmatic origin of the sediments, certain clayey levels contain organic matter and others, particular stratifications that may favour the migration of hydrocarbons. The geochemical results from the pyrolysis at Rock-Eval6 of twenty-two clay samples showed that they are source rocks with a good petroleum potential (TOC between 0.35 and 3.36%) and mature with Tmax values between 435°C and 448°C. The kerogen of the source rock is of type II and II/III with S2 and HI values which vary respectively from 1.2 to 11.2mgHC/g rock and 102 and 518mgHC/g TOC. These results (petrographic and geochemical) show the specificities and petroleum potential of the Neocomian deposits in the Benin coastal sedimentary basin.
VL  - 10
IS  - 2
ER  -

Copy | Download