GENERAL GEOLOGY

GEOLOGY

GEOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The amount of CO2 produced during pyrolysis of kerogen
A
S1
B
S2
C
S3
D
Tmax
Explanation: 

Detailed explanation-1: -Kerogen type III contains sufficient hydrogen to be gas generative but not enough hydrogen to be oil prone. In its pure form, it is composed of vitrinite, a maceral formed from land plant wood.

Detailed explanation-2: -Rock Eval pyrolysis S1 = the amount of free hydrocarbons (gas and oil) in the sample. S2 = the amount of hydrocarbons generated through thermal cracking of nonvolatile organic matter. S3 = the amount of CO2 (in milligrams CO2 per gram of rock) produced during pyrolysis of kerogen.

Detailed explanation-3: -Kerogen pyrolysis can be considered as a serious cleavage of bonds and various volatile products are related to several precursor structures in kerogen [9], [10], [27]. Aliphatics in oil and hydrocarbon gases are mainly derived from aliphatic structures, and aromatic products could come from aromatic structures.

Detailed explanation-4: -Pyrolysis is the decomposition of organic matter by heating in the absence of oxygen. Organic geochemists use pyrolysis to measure richness and maturity of potential source rocks.

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