petroleum geologist
oil geologist

A nerdy oil geologist who uses his office window as a blackboard.

During my visit, an oil geologist at the Brooks Lodge dinner table explained the governmental blunder.

They reached the oil geologists' camp before noon.

The oil geologist had told her nothing but the truth when he had said that he could ride all day.

As widely suspected, but known for certain by only a few dozen petroleum experts and oil geologists, the vast Saudi oil fields were slowly running dry.

Walter K. Link (1902-1982) was an American oil geologist.

Economists think themsleves better at finding oil than oil geologists.

When searching for fossil fuels at sea, oil geologists are able to use special sniffer equipment to detect traces of natural gas in seawater.

Of course, oil geologists aren't hoping for ice cream.

After graduating with a bachelor's degree in physics from the University of Tulsa in 1954, he worked as an oil geologist.