WELL · 42-331-33103 · DISTRICT 1
Coldiron #4
Milam County · Pecan Gap (5050) field · Shut IN · Vertical
Coldiron #4 (API 42-331-33103) is a well in Milam County operated by Sheldon Resources L.P., completed June 30, 1993 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit, issued February 27, 1987, permitted to 6,000 ft.
It was permitted by Luling Oil & Gas Company, Inc. and has since transferred to Sheldon Resources L.P. on the wellbore schedule.
Completion filings report 4 formation tops, including Pecan Gap, Austin Chalk, False Buda, Buda.
No lease production has been reported under this well’s leases.
It holds an active disposal or injection permit.
Operator of record
Permitted by Luling Oil & Gas Company, Inc.; the EWA schedule now lists a different operator.
Bryan, TX · P-5 Y, filed Mar 4, 2026 · 4 permits on file · (214) 728-0591
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sheldon Resources L.P. |
| Production reports | none |
| Latest permit | Luling Oil & Gas Company, Inc.Feb 27, 1987 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,000
- total depth, ft
- 1
- permits on file
- Feb 27, 1987
- last permit issued
- Jun 30, 1993
- completed
- 0
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 30, 1993
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Coldiron O-1-11989 | Pecan Gap (5050) | Sheldon Resources, L.P. | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 326575-99 | Drill | Luling Oil & Gas Company, Inc. | Feb 13, 1987 | Feb 27, 1987 | Jan 20, 1988 | 6,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-11989 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 455 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Pecan Gap | 4,769 | -4,314 |
| Austin Chalk | 5,297 | -4,842 |
| False Buda | 5,723 | -5,268 |
| BudaBUDA RESERVOIR | 5,748 | -5,293 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,909 | 4,930 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 644 | 12.25 | 310 S |
| 4.5 | 5,792 | 7.875 | 1,375 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jul 23, 1993 | Jul 14, 1993 | — |
| 00 | Apr 5, 1988 | Mar 17, 1988 | Yes |
| 00 | Mar 26, 1988 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-331-33103 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-331-33103 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 946K
- bbl, all reported
- Jul 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000078252 | H-1 Injection | Active | 200 | 1,300 | 4,909–4,930 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 54,000(-100%)
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/33133103, documented in the API reference.