Most oil wells will not be refilled as the source rocks beneath them are already thermally overmature. But new traps are being formed today in the basins of the world, like the deltas of the major rivers. We won’t be around to see them filled. The examples that people use about old fields being “refilled” come from a few fields in the Gulf of Mexico where, because of pressure changes from the production of oil, it causes some faults to move and oil is coming up the fault plane from deeper reservoirs, say 3000’ below, not 40,000’ as some posters are claiming.