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Coal Potential as Source Rock of Hydrocarbon Warukin Formation Based on Coal Macerals Composition, Central Wara, Tabalong, South Kalimantan

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Document pages: 17 pages

Abstract: The interest of this research: there is oil seepage at the contact between coal seam-A and sandstone facies of Warukin Formation, so it is necessary to study where is the source rock. The correlation between HI and Tmax as result from rock eval pyrolysis shows that the shale of the Warukin Formation is immature while the correlation between HI and OI shows oil prone. The vitrinite (Ro) reflectance of Central Wara coal is between 0.48 up to 0.5 (immature), the content of the vitrinite group is 68.0 - 84.8 ( Vol.), Liptinite 3.0 - 14.0 ( Vol.) and inertinite 0.48 - 25.0 ( Vol.). The high content of liptinite mineral groups (14 Vol.) and the presence of exsudatinite maceral are as an initial indication of bitumenization of oil formation when there is a change in reflectance and fluorescence. Therefore, Central Wara coal plays an important role as the source rock of the Warukin Formation, although the maturity level is immature, the presence of exsudatinite maceral is believed to be the source of origin for producing oil, where the organic material comes from terrestrial.

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