Statewide API Data (ASCII)
The complete statewide listing of assigned API numbers.
What this is:
Every API number the Commission has assigned in Texas, with the identifying attributes that go with it, in fixed-width ASCII. The Well API manual explains how Texas API numbers are constructed and assigned, which is worth reading before you trust any API join.
How it is laid out:
The Railroad Commission publishes this as Fixed-width ASCII. Columns are byte ranges with no separators, described only in a scanned record layout. We mirror the Commission's file exactly as they published it, byte for byte. We have not decoded this one into a table yet, so reading it needs the right tooling.
What we add:
Validate API numbers against the authoritative assignment list, and find numbers that were assigned but never drilled.
- Mirrored so the file is here when the Commission's own link is not.
- Documented — what it is, where it came from, and when we last fetched it.
Worth knowing before use:
An assigned API number is not a well. Assignment happens at permit time. This is the ASCII edition, mirrored as the Commission publishes it: 276 fixed-width files, one per county code. If you want the same data as ROWS -- filterable, previewable, exportable in every format this site offers -- take the dBase edition instead.
The full page lists every trap in this dataset.