[TexasCowboy]

Okay, time to look at some facts and draw some logical conclusions:

The wells around Longview are shallow "pumpers" with pumpjacks dotting the landscape.
The Longview field has been in play almost as long as Spindletop.
The casing is old.
More than likely, the surface casing from a nearby well is ruptured and the small amount of gas lift has pushed the oil up through the ground into her living room.
The Texas Railroad Commission will come in and pressure test every well until they find the culprit, then that well will be plugged all the way to the top to protect the ground water.
Whomever is the owner of that well will be responsible for the cleanup and the cleaning of Leila Letourneau's carpets.

[Brad’s Gramma]

Can she keep some?

[Dog Gone]

You're far more experienced with regard to field operations than I am, but your theory doesn't sound right to me, if the closest well is somewhere near her "neighborhood." I would think an oil plume would hit just about everyone between her and the nearest well.

If I had to guess, the house was built on top of an improperly abandoned well from many decades ago, and the plug broke. If the Longview field is using secondary or tertiary recovery methods, I'd really suspect this as the cause.