The Railroad Commission map is only a first clue about a Gregg County well

The name is a bit of Texas history: the Railroad Commission no longer runs rail rules. It handles oil and gas permits, output reports, well-plugging rules, and much pipeline safety work. Gregg County sits in the old East Texas Oil Field. TCEQ and local offices handle other parts of the work.

Treat the RRC Public GIS Viewer as a first clue, not a parcel verdict. Its land lines and well points are rough. A point may show the bottom of a well rather than its spot at the surface. The map cannot prove that a well is on a tract or name the mineral owner.

One person can own the surface while someone else owns the minerals. Review the deed, title exceptions, and county records. If mineral ownership matters to a sale, a Texas oil and gas lawyer can do the deeper title work that an online map cannot do.