Petroliferous basins_figs.ppt

8/16/2019 Petroliferous basins_figs.ppt

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Stratigraphic Units of Indian Petroliferous Basins


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Relative amount of normal paraffins in Recent sediments

showing predominance of odd-carbon chains (after Hunt)


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as chromatogramsshowing progressivedegradation of crude oil inseveral fields in !lberta"#anada$

%he top graph is of unalteredoil which contains all thenormal paraffins$

!s the oil becomes moredegraded the normalparaffins disappear" butpristane and ph&tanepersist$ 'inall& even the&disappear$

(after eroo" *++" courtes&eological Surve& of#anada)


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as chromatograms of ,nown immature condensates of other basins of the

world (after #on an et al$)


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istribution of n-al,anes

in Recent sediments ofvarious origin$

as chromatograms of

saturated h&drocarbons

(left) showing the pea,s of

n-al,anes" with theircarbon numbers$

-al,ane distribution

curves derived from gas

chromatograms (right)$

(!fter astillung" *+."

eb&ser et al$$ *++)


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%ernar& diagram showing composition of oils and condensates of Indian

Basins$


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Refinements in orth /adi 'ield 0 Structural modifications

based on limited well data (!fter irectorate of eolog&)


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eneralised map of

!rabian Sea" showing

magnetic lineations

(solid lines)" fracture1ones (dashed lines)

and main structural

features

(modified after #haube&

et al$" **2)


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Roc, units and their reference sections in Bomba& 3ffshore Basin


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4ithological and thic,ness parameters of %ertiar& subdivisions on the western

Indian Shelf (!fter Pande& and uha)


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4ithostratigraphic units of Bomba& 3ffshore Basin


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Source roc,-sediment maturit& map" Bomba& offshore basin" on the basis

of %3# and 435 gradient (after 5ishra et$ al$" *67)


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8ell Bomba& 3ffshore 0


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4ithostratigraphic units in different bloc,s of Bomba& 3ffshore Basin


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Roc, units and their reference section in #amba& Basin


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4ithostratigraphic units of #amba& Basin


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3utcrop and Stratot&pe localities of #auver& Basin


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Stratigraphic succession of #auver& Basin


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3utcrops and stratot&pes of /rishna 0 odavari Basin


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4ithostratigraphic succession of /rishna 0 odavari Basin


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eological set up and 'ormation stratot&pes of orth 9ast Basins


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#retaceous and %ertiar& stratigraph& of !ssam !ra,an Region


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eneralised cross section across 9astern Himala&a" Upper !ssam

valle&" and aga Hills


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Stratigraphic relationship of lithologic successions in orth-9ast Basins


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4ithostratigraphic section along Upper !ssam and hansiri :alle&


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8ell locations and formation stratot&pes of 8est Bengal Basin


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Stratigraphic units of 8est Bengal Basin


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#retaceous-Paleocene Stratigraphic correlation in the subsurface of

8est Bengal Basin


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Schematic geological section through Bengal Basin

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Petroliferous basins_figs.ppt