Among the options given below, what is the typical temperature range for significant oil generation in a source rock associated with conventional crude-oil reservoirs?
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- 10°C – 40°C
- 60°C – 175°C
- 225°C – 325°C
- 350°C – 425°C
The Correct Option is B
Solution and Explanation
Step 1: Temperature and Oil Generation
- At lower temperatures (below 60°C), kerogen does not break down significantly, and there is little to no oil generation.
- Between 60°C and 175°C, significant amounts of liquid hydrocarbons (oil) are generated. This is the typical range for oil generation in conventional oil fields.
- Above 175°C, kerogen begins to break down into gas rather than oil (i.e., gas window), which is why the higher temperature range is not associated with oil production.
Thus, the temperature range of 60°C to 175°C is ideal for significant oil generation, making option (B) the correct answer.
Final Answer: 60°C – 175°C
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