Mineral Rights
Mineral Rights and Surface Rights Can Be Owned Separately
In Texas, the person who owns the surface of the land may not own the minerals below it — and those are two separate legal estates.
Texas law allows mineral rights and surface rights to be split apart. If minerals have already been severed from the surface, buying the land does not give you the oil, gas, or other minerals underground. Always check the deed and a title search before buying rural property.
The mineral estate is legally dominant. If someone owns the minerals, they generally have the right to access your land to explore and drill, within limits. McLennan County does have oil and gas production. The Railroad Commission of Texas (RRC) regulates drilling and can be searched for well records. Understanding what you are buying is critical.
Source to confirm: Railroad Commission — Oil & Gas Exploration and Surface Ownership FAQ