WELL · 42-041-31936 · DISTRICT 3
Erin Unit #1
Brazos County · Kurten (Buda) field · Producing · Horizontal
Erin Unit #1 (API 42-041-31936) is a horizontal well in Brazos County operated by Buffco Production Inc., completed May 31, 2001 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended twice), issued February 22, 2001, permitted to 16,500 ft.
It was permitted by Holley Oil Company, LLC and has since transferred to Buffco Production Inc. on the wellbore schedule.
Completion filings report 2 formation tops, including Austin Chalk, Woodbine.
Its lease has reported 186K barrels of oil and 606K mcf of gas since May 2001, last reporting in July 2026.
Operator of record
Permitted by Holley Oil Company, LLC; the EWA schedule now lists a different operator.
Longview, TX · P-5 Y, filed Sep 4, 2025 · 397 permits on file · (903) 736-4697
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Buffco Production Inc. |
| Production reports | Buffco Production Inc.through Apr 2026 |
| Latest permit | Holley Oil Company, LLCFeb 22, 2001 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 16,500
- total depth, ft
- 3
- permits on file
- Feb 22, 2001
- last permit issued
- May 31, 2001
- completed
- 186K
- cumulative oil, bbl
- 606K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2001 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 31, 2001
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 |
|---|---|---|---|---|---|---|
| Erin Unit O-3-24014 | Kurten (Buda) | Buffco Production Inc. | 1 | 186K | 606K | May 2001 – Jul 2026 |
Gas, mcf lease total
Last 12 months 29,086 · prior 12 6,348(+358%)
Oil, barrels lease total
Last 12 months 2,699 · prior 12 1,594(+69%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Holley Oil Company, LLCJun 2001 → Oct 2004
- 2Pierce Operating Company, L.L.C.Nov 2004 → Feb 2012
- 3Buffco Production Inc.Mar 2012 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 505707-97 | Drill | Holley Oil Company, LLC | Jun 29, 2001 | Feb 22, 2001 | — | 16,500 |
| 505707-98 | Drill | Holley Oil Company, LLC | Feb 26, 2001 | Feb 22, 2001 | — | 16,500 |
| 505707-99 | Drill | Holley Oil Company, LLC | Feb 22, 2001 | Feb 22, 2001 | Mar 22, 2001 | 16,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-24014 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 339 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 8,282 | -7,943 |
| WoodbineWOODBINE (B) | 8,380 | -8,041 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,237 | 13,098 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 1,973 | 14.75 | 870 S |
| 7 | 9,004 | 9.875 | 600 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 | Aug 20, 2001 | Jun 21, 2001 | Yes |
| 00 | Jul 18, 2001 | — | — |
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 42-041-31936 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-041-31936 → 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.
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/04131936, documented in the API reference.