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Line 35:
Line 35: − + − + − + − + − +
→Pyrolysis indices
! Comment
! Comment
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| S<sub>1</sub> mg Hc/g rock
| S1 mg Hc/g rock
| The free hydrocarbons present in the sample before the analysis
| The free hydrocarbons present in the sample before the analysis
| Can be thought of as a residual hydrocarbon phase. When S<sub>1</sub> is large relative to S<sub>2</sub> , an alternative source such as migrated hydrocarbons or contamination should be suspected
| Can be thought of as a residual hydrocarbon phase. When S1 is large relative to S2, an alternative source such as migrated hydrocarbons or contamination should be suspected
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| S<sub>2</sub> mg Hc/g rock
| S2 mg Hc/g rock
| The volume of hydrocarbons that formed during thermal pyrolysis of the sample
| The volume of hydrocarbons that formed during thermal pyrolysis of the sample
| Used to estimate the remaining hydrocarbon generating potential of the sample
| Used to estimate the remaining hydrocarbon generating potential of the sample
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| S<sub>3</sub> mg Co2/g rock
| S3 mg Co2/g rock
| The CO<sub>2</sub> yield during thermal breakdown of kerogen
| The CO<sub>2</sub> yield during thermal breakdown of kerogen
| Most prevalent in calcareous source rocks.
| Most prevalent in calcareous source rocks.
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| S<sub>4</sub> mg carbon/g rock
| S4 mg carbon/g rock
| The residual carbon content of the sample
| The residual carbon content of the sample
| Residual carbon content of sample has little or no potential to generate hydrocarbons due to a lack of hydrogen and the chemical structure of the molecule
| Residual carbon content of sample has little or no potential to generate hydrocarbons due to a lack of hydrogen and the chemical structure of the molecule