Yes - The La Brea tar pits, the oil sands in Canada, and oil shale in Utah are all examples.
Off the top of my head, I recall that an astounding percentage - like 80% - of the earth's permeable oil has already reached the surface.
Most of it has dissolved, evaporated, or been consumed by micro organisms.
The oil shale in Utah and Colorado (Green River Formation) is a little different in that it is the remains of a fresh water lake. Something similar to the Great Salt Lake but larger. The organic matter was laid down in yearly cycles like a tree ring such that you can count the layers and determine that it took about six million years to fill in. It is famous for its fossils and I have several fish in my office from there.