petroleum geologist (noun)

1. In the comic book series 'Black Gold,' the main character is a young petroleum geologist who discovers a hidden oil reserve.

2. In the novel 'Drilling Deep,' the protagonist is a petroleum geologist who sets out on a dangerous journey to find a legendary oil well.

3. The fashion magazine featured an article on the stylish attire worn by petroleum geologists for fieldwork.

4. During the oil boom in the early 20th century, petroleum geologists played a crucial role in discovering and developing major oil fields.