A study on assessment of hydrocarbon potential of the lignite deposits of Saurashtra basin, Gujarat (Western India)
| Autor: | Neeraj Mathur, Prakash K. Singh, Pramod K. Rajak, V. K. Singh |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
lcsh:TN1-997
Saurashtra 020209 energy Energy Engineering and Power Technology Mineralogy 02 engineering and technology 010502 geochemistry & geophysics 01 natural sciences chemistry.chemical_compound Inertinite 0202 electrical engineering electronic engineering information engineering Kerogen Organic matter lcsh:Mining engineering. Metallurgy 0105 earth and related environmental sciences chemistry.chemical_classification Maturity (geology) Maceral Rock-Eval Geotechnical Engineering and Engineering Geology Hydrocarbon chemistry Liptinite Hydrocarbon generating potential Reactive maceral Saurashtra lignite |
| Zdroj: | International Journal of Coal Science & Technology, Vol 4, Iss 4, Pp 310-321 (2017) |
| ISSN: | 2198-7823 2095-8293 |
| DOI: | 10.1007/s40789-017-0186-x |
| Popis: | In the present investigation, Bhavnagar lignites of the Saurashtra basin (Gujarat) have been studied to assess their hydrocarbon generating potential. The samples of upper as well as lower lignite seams have been studied through microscopy and subjected to various chemical analyses viz. proximate analysis, ultimate analysis and Rock-Eval Pyrolysis. These lignites have high moisture and low to moderate ash yield but are characterized by high volatile matter. Petrographically they comprise predominantly of huminite group maceral while liptinite and inertinite groups occur in subordinated amount. Huminite is chiefly composed of detrohuminite and telohuminite. The T max (av. 416.23 °C) and huminite reflectivity (0.28%–0.30%) indicate a low degree of maturity for these lignites which is also substantiated by the T max versus hydrogen index plot. The organic matter is subjugated by kerogen Type-III with a potential to expel hydrocarbon on liquefaction. Study further reveals that the fixed hydrocarbon is several folds higher than the free hydrocarbons. Being high in reactive maceral content, a high ‘conversion’ and good ‘oil yield’ values for these lignites were observed. Thus, the empirically derived values match well with those obtained through the experimental values of Rock-Eval Pyrolysis and validate their hydrocarbon generating potential. |
| Databáze: | OpenAIRE |
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