Oil in granites - reality or myth?

At first glance, oil and granite seem to be antipodes by origin. How they can be integrated together? However, there is a meaning in such treatment. And, although aspects related to the origin of oil or granites are the subject of special studies – the important issue is the study of some features of the behavior of oil and granites after their formation as mineral resources and their entry into the composition and structure of the earth’s crust, and mainly the question of the role of granites in the formation of oil deposits.