Which kerogen type is typically waxy oil-prone?

Which kerogen type is typically waxy oil-prone?

• A. Type II
• B. Type III
• C. Type I
• D. Type IV

Answer: (C)

Waxy oil-prone behavior comes from kerogen that is highly oil-yielding due to its hydrogen-rich, algae-derived composition. Type I kerogen, formed from abundant marine/algal organic matter, is the most oil-prone and tends to generate oils rich in long-chain paraffins. Those paraffin-rich oils are the ones that exhibit a waxy character, especially as maturation progresses. In contrast, Type II kerogen also produces oil but with less emphasis on waxy paraffins, Type III mainly yields gas, and Type IV is largely inert with little hydrocarbon generation. So, the kerogen most classically associated with waxy oil-prone oils is the algal, oil-prone Type I.

Waxy oil-prone behavior comes from kerogen that is highly oil-yielding due to its hydrogen-rich, algae-derived composition. Type I kerogen, formed from abundant marine/algal organic matter, is the most oil-prone and tends to generate oils rich in long-chain paraffins. Those paraffin-rich oils are the ones that exhibit a waxy character, especially as maturation progresses. In contrast, Type II kerogen also produces oil but with less emphasis on waxy paraffins, Type III mainly yields gas, and Type IV is largely inert with little hydrocarbon generation. So, the kerogen most classically associated with waxy oil-prone oils is the algal, oil-prone Type I.