Reference

Some scientists believe the Bạch Hổ oil field might contain abiogenic oil due to its geological characteristics. Located in Vietnam, the field is situated 4,000 meters of fractured basement granite at a depth of 5,000 meters, which is atypical compared to conventional oil reservoirs that are typically formed from organic matter. This has led to the proposal that the oil in the Bạch H oil field could be an example of abiogenic oil, which is thought to originate from deep carbon deposits within the Earth's mantle. The theory suggests that these hydrocarbons could migrate upward through geological structures to form pools of oil, such as those found in the Bạch Hổ oil field. However, this theory remains a subject of debate within the scientific community, as the conventional view is that oil is formed from the remains of ancient organisms. For more detailed information, you can refer to the Wikipedia page on Abiogenic petroleum origin.