Difference between revisions of "Kerogen types: comparison of maturity measures"

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! Hydrocarbon generation zone
 
! Hydrocarbon generation zone
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! Vitrinite reflectance, % Ro
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! Vitrinite refl., % Ro, Type II
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! Transformation ratio, %
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! Vitrinite refl., % Ro, Type III
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! Present-day depth, m
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! Transformation ratio, %, Type II
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! Type II
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! Transformation ratio, %, Type III
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! Type III
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! Present-day depth, m, Type II
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! Type II
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! Present-day depth, m, Type III
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! Type III
 
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! Type II
 
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! Type III
 
 
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| Onset oil
 
| Onset oil

Revision as of 14:05, 24 January 2014

Exploring for Oil and Gas Traps
Series Treatise in Petroleum Geology
Part Critical elements of the petroleum system
Chapter Evaluating source rocks
Author Carol A. Law
Link Web page
Store AAPG Store

Parameter differences

The table below shows examples of the relationships between hydrocarbon generation zones, maturity, and transformation ratio for standard types II and III kerogens, based on a specific burial and thermal history model. The most significant difference is in the depth to the onset of oil generation, where depth::1000 m separates the top of the oil windows of these two kerogen types.

Hydrocarbon generation zone Vitrinite refl., % Ro, Type II Vitrinite refl., % Ro, Type III Transformation ratio, %, Type II Transformation ratio, %, Type III Present-day depth, m, Type II Present-day depth, m, Type III
Onset oil 0.55 0.85 5 12 2200 3200
Onset peak rate generation 0.65 1.00 17 31 2600 3500
Onset gas/cracking liquids 0.95 1.35 88 64 3400 4050

See also

External links

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