Question

How do we locate and extract petroleum fossil fuels

Answer 1

We extract petroleum through gas rigs as petroleum is found in the deeper layers of the earth.

Answer 2

Petroleum that is worthwhile extracting is usually found trapped in layers of permeable rocks by other layers of impermeable rock, but more recently reserves of gas and oil are being extracted from shale which is an impermeable rock but is porous in the sense that there are spaces (pores) within its structure in which ...