Oil shale:- shales containing oil are called oil shales. Oil was extracted from these shales by pyrolysis. pyrolysis is basically heating in absence of oxygen at 550° C .
Bitumin:- It is soluble in organic solvents , it is very well structured. Its of 3 types:-
a) labine -> very easily liberates hydrocarbon
b) inert -> high temp required for getting hydrocarbons
c) refractant -> can be used as an indicator of maturity in hydrocarbon source rocks, is a key method for identifying the temperature history of sediments in sedimentary basins.
(wiki pedia)
(wiki pedia)
kerogens:- not structured and are insoluble in organic solvents, these the ones that have a good petroleum formation potential.
kerogen type-1 H:C ratio > 1.5
Vitrinite reflectance :- can be used as an indicator of maturity in hydrocarbon source rocks, is a key method for identifying the temperature history of sediments in sedimentary basins.
(wiki pedia)
(wiki pedia)
Catagenetic regime -> it comes after diagenisis stage and before metagenisis. So VRo –> 0.5 – 2 %
Oil window -> VRo –> 0.7 – 1.3 %
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