Where is petroleum found and how is it extracted ?
Petroleum is found in sea or under earth. They are found under overlying impervious rocks. It is lighter than water, so does not get mixed with it and moves upward near the capping rocks. Wells are dug into these rock to pull of the petroleum. impervious rocks. It is lighter than water, so does not get mixed with it and moves upward near the capping rocks. Wells are dug into these rock to pull of the petroleum.