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Kerogen type and maturity (view source)
Revision as of 15:56, 21 November 2014
, 15:56, 21 November 2014no edit summary
| 2
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| Apply this relationship to predict the generation zones for this specific kerogen in wells with similar thermal and burial histories in the basin for which maturity data are available.
| Apply this relationship to predict the generation zones for this specific kerogen in wells with similar thermal and burial histories in the basin for which maturity data are available.
|}
==Comparison and maturity measures==
The table below shows examples of the relationships between [[Petroleum generation|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.
{| class = "wikitable"
|-
! Hydrocarbon generation zone
! Vitrinite refl., % R<sub>o</sub>, Type II
! Vitrinite refl., % R<sub>o</sub>, 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
|}
|}