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Petroleum Geosciences: Indian ContextsHydrocarbon Potential of the Paleogene Disang Group, Manipur Region, India-A Palynological Approach

Petroleum Geosciences: Indian Contexts: Hydrocarbon Potential of the Paleogene Disang Group,... [In the present study, the rocks of the Disang Group of Manipur are evaluated for source rock potential for hydrocarbons. In these Paleogene rocks, amorphous organic matter is the most abundant component in association with other forms of organic matter. Other types of organic matters such as charcoal, partly biodegraded land plant fragments, black debris, spores and pollens are recorded as well. Rock-Eval and TOC analysis of the studied samples suggest that all the rocks have poor organic richness (TOC < 0.5 %) and poor hydrocarbon generation potential (S2 < 0.5 mgHC/g rock). The organic matter content is predominantly of Type III and Type IV. The Tmax and Productive Index values support the results of visual kerogen analysis. Most of the kerogen is of low level of maturity inferred from light colour of amorphous organic matter in some samples. This conclusion is also supported by Low Tmax values and low productive index obtained from these samples. TAI (Thermal Alteration Index) values above 3.5 suggest highly mature to overmature mixed palynofacies. The Disang Group of the Manipur appears poor to moderate gaseous hydrocarbons as far as hydrocarbon potential is concerned.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Petroleum Geosciences: Indian ContextsHydrocarbon Potential of the Paleogene Disang Group, Manipur Region, India-A Palynological Approach

Part of the Springer Geology Book Series
Editors: Mukherjee, Soumyajit
Singh, Y. Raghumani; Singh, B. P.; Li, Jianguo
Petroleum Geosciences: Indian Contexts — May 20, 2015
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14 pages

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Publisher
Springer International Publishing
Copyright
© Springer International Publishing Switzerland 2015
ISBN
978-3-319-03118-7
Pages
191 –204
DOI
10.1007/978-3-319-03119-4_8
Publisher site
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Abstract

[In the present study, the rocks of the Disang Group of Manipur are evaluated for source rock potential for hydrocarbons. In these Paleogene rocks, amorphous organic matter is the most abundant component in association with other forms of organic matter. Other types of organic matters such as charcoal, partly biodegraded land plant fragments, black debris, spores and pollens are recorded as well. Rock-Eval and TOC analysis of the studied samples suggest that all the rocks have poor organic richness (TOC < 0.5 %) and poor hydrocarbon generation potential (S2 < 0.5 mgHC/g rock). The organic matter content is predominantly of Type III and Type IV. The Tmax and Productive Index values support the results of visual kerogen analysis. Most of the kerogen is of low level of maturity inferred from light colour of amorphous organic matter in some samples. This conclusion is also supported by Low Tmax values and low productive index obtained from these samples. TAI (Thermal Alteration Index) values above 3.5 suggest highly mature to overmature mixed palynofacies. The Disang Group of the Manipur appears poor to moderate gaseous hydrocarbons as far as hydrocarbon potential is concerned.]

Published: May 20, 2015

Keywords: Total Organic Carbon; Source Rock; Planktonic Foraminifera; Hydrogen Index; Kerogen Type

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