Petroleum geology and a young earth are not compatible. In over 30 years I have never met a petroleum geologist, geophysicist, or petroleum engineer who believed in a young earth. Since most remaining oil and gas plays are stratigraphic it requires an in depth understanding of depositional enviroments and the ability to reconstruct the paleogeography of an area through time. Otherwise you will not be able to predict where the oil and gas reservoirs will be. Since the great majority of rocks have not been deposited by flood waters, believing that the entire geologic column was deposited by a flood puts you at a serious disadvantage when looking for hydrocarbons. The advantage is that you can make a living getting fools to send you money to continue your "research" into proving certain selected parts of the bible to be literally true.
"Geologists" (and I use that term loosely) who believe in a young earth are generally regarded as mentally ill, retarded, or con men.
Most received their degrees fraudulently.
I would estimate that well over 95% of the professional people I know in the oil and gas industry are Christians.