Plate movement and granite build up from beneath. We are dealing with maybe four billion years of formation.
There have been instances of fields refilling over time in Oklahoma and the Gulf of Mexico. I would guess that these are places where it is possible for upward migration.
Then, if a pervious layer is full and the migration route is semi-porous, the layer would not take on new oil until drilled and it could take a great deal of time to refill.
I don’t know that we will know the truth until we drill nearly through the crust. Or find a field that is porous to the mantle. We may never find the second because of granite formation from beneath.
I'm only talking of layers above the granite.
There have been instances of fields refilling over time in Oklahoma and the Gulf of Mexico.
Myths not reality. Enhanced oil recovery that uses additional methods is not the same as refilling.
, if a pervious layer is full and the migration route is semi-porous
I'm asking about the impervious layer on top, that then has additional oil layer above has of a drastic different quality, viscosity, ratios of heavies to lights, etc.
I don’t know that we will know the truth
I don't know that some will every recognize what is before them.