[ Caractérisation physicochimique des produits fossiles pétroliers non conventionnels de Bemolanga et Tsimiroro, Madagascar ]
Volume 24, Issue 2, June 2016, Pages 423–437
Simon Rakotoarison1, Eddy H. Rasolomanana2, Baholy Robijaona3, and Koto-te-Nyiwa Ngbolua4
1 Ecole Supérieure Polytechnique d’Antananarivo, Madagascar
2 Ecole Supérieure Polytechnique d’Antananarivo, Madagascar
3 Ecole Supérieure Polytechnique d’Antananarivo, Madagascar
4 Département de Biologie, Faculté des Sciences, Université de Kinshasa, BP 190 Kinshasa XI, RD Congo
Original language: French
Copyright © 2016 ISSR Journals. 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.
Madagascar has not come up to petroleum discovery till now, nevertheless many petroleum companies have acquired licenses for petroleum exploration in the western sedimentary basin of Madagascar, since the new promotional petroleum exploration undertaken on 1980. The existence of the two non conventional fossil deposits discovered since longtime ago have boosted the invertors to come to Madagascar to try to find out the geological model of the eventual petroleum discovery within the huge sedimentary basin of different ages. The two deposits which are The Bemolanga tar sands deposit and the Tsimiroro heavy oil deposit were located in the Morondava sedimentary basin, in the central part of the western sedimentary basin of Madagascar. The two deposits stand besides and are about only 60 km away from each other. To support the petroleum exploration works, it was worth to know the physico-chemical and the geochemical characteristics of the oils and the minerals containing the oils. Thus the main focus of this paper is to develop the analysis for the characterization of oils and minerals which we have been undertaken since thirty years ago. The result of the analysis have stated the Permo-Triassic age of the Bemolanga and Tsimiroro deposits. To complete the useful data for the exploration issue, geochemical and chemical analysis were undertaken to evaluate the Source rock evaluation and the behavior of the Bemolanga and Tsimiroro oils. The results of the study showed that: The Bemolanga bitumen and Tsimiroro oils have high basic compounds content; not any kind of clays which may inhibit the oil recovery process was found; vapor injection process and combustion process would fit to recover these oils.
Author Keywords: Oil research, fossils, bituminous sandstone, heavy oil, sedimentary basin, geochemistry, hydrocarbon, clays.
Volume 24, Issue 2, June 2016, Pages 423–437
Simon Rakotoarison1, Eddy H. Rasolomanana2, Baholy Robijaona3, and Koto-te-Nyiwa Ngbolua4
1 Ecole Supérieure Polytechnique d’Antananarivo, Madagascar
2 Ecole Supérieure Polytechnique d’Antananarivo, Madagascar
3 Ecole Supérieure Polytechnique d’Antananarivo, Madagascar
4 Département de Biologie, Faculté des Sciences, Université de Kinshasa, BP 190 Kinshasa XI, RD Congo
Original language: French
Copyright © 2016 ISSR Journals. 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.
Abstract
Madagascar has not come up to petroleum discovery till now, nevertheless many petroleum companies have acquired licenses for petroleum exploration in the western sedimentary basin of Madagascar, since the new promotional petroleum exploration undertaken on 1980. The existence of the two non conventional fossil deposits discovered since longtime ago have boosted the invertors to come to Madagascar to try to find out the geological model of the eventual petroleum discovery within the huge sedimentary basin of different ages. The two deposits which are The Bemolanga tar sands deposit and the Tsimiroro heavy oil deposit were located in the Morondava sedimentary basin, in the central part of the western sedimentary basin of Madagascar. The two deposits stand besides and are about only 60 km away from each other. To support the petroleum exploration works, it was worth to know the physico-chemical and the geochemical characteristics of the oils and the minerals containing the oils. Thus the main focus of this paper is to develop the analysis for the characterization of oils and minerals which we have been undertaken since thirty years ago. The result of the analysis have stated the Permo-Triassic age of the Bemolanga and Tsimiroro deposits. To complete the useful data for the exploration issue, geochemical and chemical analysis were undertaken to evaluate the Source rock evaluation and the behavior of the Bemolanga and Tsimiroro oils. The results of the study showed that: The Bemolanga bitumen and Tsimiroro oils have high basic compounds content; not any kind of clays which may inhibit the oil recovery process was found; vapor injection process and combustion process would fit to recover these oils.
Author Keywords: Oil research, fossils, bituminous sandstone, heavy oil, sedimentary basin, geochemistry, hydrocarbon, clays.
Abstract: (french)
Jusqu’à maintenant, aucune découverte de pétrole n’a vu le jour à Madagascar, malgré la venue de plusieurs compagnies pétrolières acquérir des permis de recherche dans les bassins sédimentaires de la partie Ouest de Madagascar, depuis le lancement de la nouvelle promotion de la recherche pétrolière en 1980. L’existence des deux gisements fossiles non conventionnels découverts depuis longtemps a incité les investisseurs à venir à Madagascar pour trouver le modèle géologique d’éventuels gisements de pétrole dans cet immense bassin de différents âges. Les deux gisements qui sont le grès bitumineux de Bemolanga et l’huile lourde de Tsimiroro sont localisés dans le bassin sédimentaire de Morondava, la partie centrale du bassin sédimentaire de Madagascar. Ils sont situés à l’Ouest de la Capitale Antananarivo. Les deux gisements se trouvent côte à côte et distant de 60 km l’un de l’autre. Pour aider la recherche sur l’exploration pétrolière afin de connaitre l’origine de bitume et de l’huile lourde, il est nécessaire de déterminer les caractères géochimiques et physico-chimiques des différentes roches, bitume et huile lourde de ces deux gisements. C’est le but essentiel de cette étude que nous avons entreprise depuis plus d’une trentaine d’années. Les résultats des analyses ont démontré l’âge Permo-Triassique des deux gisements. Le comportement géochimique des huiles ont révélé la nature et l’âge de leurs roches mères. Et enfin, Les résultats de nos recherches nous ont aussi amené aux conclusions suivantes : La teneur en composés basiques est très importante dans le bitume de Bemolanga et l’huile lourde de Tsimiroro. La recherche des argiles gonflantes, inhibitrices de la récupération assistée de ces huiles s’avérait infructueuse. La récupération assistée par injection de vapeur et par « combustion in situ » est envisageable pour les deux huiles.
Author Keywords: Recherche pétrolière, fossiles, grès bitumineux, huile lourde, bassin sédimentaire, géochimie, hydrocarbure, argiles.
How to Cite this Article
Simon Rakotoarison, Eddy H. Rasolomanana, Baholy Robijaona, and Koto-te-Nyiwa Ngbolua, “Physicochemical characterization of the non conventional petroleum oil fossil products from Bemolanga and Tsimiroro, Madagascar,” International Journal of Innovation and Scientific Research, vol. 24, no. 2, pp. 423–437, June 2016.
