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Line 95:
Line 95: + − − [[file:evaluating-source-rocks_fig6-18.png|400px|thumb|{{figure number|1}}. Copyright: results of Genex 1-D basin [[modeling]] software, courtesy Institute Français du Petrole.]]
→Transformation ratio
==Transformation ratio==
==Transformation ratio==
[[file:evaluating-source-rocks_fig6-18.png|400px|thumb|{{figure number|1}}. Copyright: results of Genex 1-D basin [[modeling]] software, courtesy Institute Français du Petrole.]]
When we compare [[Petroleum generation|hydrocarbon generation]] curves and [[transformation ratio]] curves from 1-D models, we can develop a relationship in a way similar to that for generation-maturity. If [[vitrinite reflectance]] data are available, the relationship between transformation ratio and maturity can be used to predict (1) percentage of [[Kerogen types|kerogen]] that has generated hydrocarbons at a given depth and (2) hydrocarbon yields.
When we compare [[Petroleum generation|hydrocarbon generation]] curves and [[transformation ratio]] curves from 1-D models, we can develop a relationship in a way similar to that for generation-maturity. If [[vitrinite reflectance]] data are available, the relationship between transformation ratio and maturity can be used to predict (1) percentage of [[Kerogen types|kerogen]] that has generated hydrocarbons at a given depth and (2) hydrocarbon yields.
===Example===
===Example===
Based on [[:file:evaluating-source-rocks_fig6-18.png|Figure 1]], we determine that at a depth of [[length::2.6 km]] the modeled well is presently in the oil generation zone and approximately 25% of the kerogen in the source rocks at this depth has generated hydrocarbons. We know from the hydrocarbon generation-maturity relationship that at [[length::2.6 km]] this well has a [[vitrinite reflectance]] ( R<sub>o</sub>) of 0.7%. If another well in the basin contains similar source rocks and has a maturity of 0.7% R<sub>o</sub> at [[length::3.7 km]], then we can predict that the section at [[length::3.7 km]] is mature for liquid generation and has generated a liquid hydrocarbons, converting approximately 25% of its kerogen to hydrocarbons.
Based on [[:file:evaluating-source-rocks_fig6-18.png|Figure 1]], we determine that at a depth of [[length::2.6 km]] the modeled well is presently in the oil generation zone and approximately 25% of the kerogen in the source rocks at this depth has generated hydrocarbons. We know from the hydrocarbon generation-maturity relationship that at [[length::2.6 km]] this well has a [[vitrinite reflectance]] ( R<sub>o</sub>) of 0.7%. If another well in the basin contains similar source rocks and has a maturity of 0.7% R<sub>o</sub> at [[length::3.7 km]], then we can predict that the section at [[length::3.7 km]] is mature for liquid generation and has generated a liquid hydrocarbons, converting approximately 25% of its kerogen to hydrocarbons.