UIC Database (ASCII) — what it is, in short

What this is:

UIA010. Every saltwater disposal well, enhanced-recovery injector and storage well permitted under the Underground Injection Control programme, in 622-byte records across fourteen record types. The inventory record carries the control number, the permit dates, the UIC class, the injection type, the approved injection interval, the maximum authorised surface pressure and daily volume, and a long list of what may be injected.

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 decode it into a table you can open anywhere. It has 84 columns and about 126.7K rows.

The columns you will most likely want:

record_type The two-byte record type from the original hierarchical file.
cntl_no The UIC control number. Primary key here, and the join key for the monitoring and remark tables.
next_available
next_dummy_lease Next available dummy lease number.
og_type Whether the associated lease is on the oil or gas schedule.
lease_id Lease identifier the injection well is on.

…and 78 more, all documented on the full page.

What we add:

Find every disposal well within an area, with its permitted daily volume and maximum pressure — the two numbers that matter for seismicity and for aquifer risk.

There is more on the full page, including what this joins to.

Decoded out of the Commission's original format into something Excel opens.
Filterable before you download, so you can take one county instead of the whole state.
The Commission's single-letter codes translated into words.

Worth knowing before use:

The API number here is only the five-digit unique component; the county is in its own column. Concatenate the two to get the eight-digit API the rest of the catalog uses. dist is RRC's internal district number, not the printed designation. Permitted volume and pressure are what the permit authorises, not what was injected.

The full page lists every trap in this dataset.

Get it:

People who want this usually want:

Full Wellbore Database (ASCII) Every well ever assigned an API number in Texas, with casing, tubing, perforations, formations, plugging and inactive-well tests.
UIC Monitoring Records The monitoring a UIC permit requires, and the results recorded.
P-5 Organization (ASCII) Every organization with an RRC operator number: name, status, type and address.
UIC Permit Remarks What the district office wrote on a UIC permit.
PDQ Field Directory The field number to field name lookup, with class, discovery date and rules flags.
UIC Database (EBCDIC) The injection well database in the original mainframe encoding.