Reason is, a buddy of mine in the oil fields of West Texas told me that long dry oil well suddenly had oil in them again.
Had did the oil get there?
Heck, who knows, but don't expect academics to admit anything that doesn't fit their narrative of doing away with oil and gas.
Some one may have fraced an offset well and it opened up a new zone of higher permeability for the old well to tap into. It happens all the time. Fracs tend to go out several hundred feet from the wellbore. In lower permeability reservoirs, much of the oil (up to 80% in some of the crappier ones) is left behind because of a loss of reservoir drive (pressure.) If it were that simple, we would never have to drill another well again. Just wait for the Oil Fairy to release a new batch of crude.
Someone may have also started a water flood nearby where they pump salt water into the edge of the reservoir to push oil towards the producing wells. That is a very common practice.