WELL · 42-181-31450 · DISTRICT 9
Irby #4
Grayson County · Gordonville S. (Penn.) field · Producing · Directional
Irby #4 (API 42-181-31450) is a well in Grayson County operated by Tatanka Operating LLC, completed February 22, 2010 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended twice), issued May 26, 2009, permitted to 10,000 ft.
It was permitted by Atoka Operating, Inc. and has since transferred to Tatanka Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Simpson, Birds Eye, Oil Creek.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Atoka Operating, Inc.; the EWA schedule now lists a different operator.
Whitesboro, TX · P-5 Y, filed May 4, 2026 · (940) 736-3129
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Tatanka Operating LLC |
| Production reports | Tatanka Operating, LLCthrough Apr 2026 |
| Latest permit | Atoka Operating, Inc.May 26, 2009 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,000
- total depth, ft
- 3
- permits on file
- May 26, 2009
- last permit issued
- Feb 22, 2010
- completed
- 0
- cumulative oil, bbl
- 312K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2010 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 22, 2010
- 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 |
|---|---|---|---|---|---|---|
| Irby G-13-256480 | Gordonville, S. (Penn.) | Tatanka Operating, LLC | 1 | 0 | 312K | Feb 2010 – Jul 2026 |
Gas, mcf lease total
Last 12 months 7,812 · prior 12 13,107(-40%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Atoka Operating, Inc.Feb 2010 → Apr 2023
- 2Tatanka Operating, LLCMay 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 681511-97 | Drill | Atoka Operating, Inc. | May 17, 2010 | May 26, 2009 | Nov 29, 2009 | 8,990 |
| 681511-98 | Drill | Atoka Operating, Inc. | Oct 30, 2009 | May 26, 2009 | Nov 28, 2009 | 8,990 |
| 681511-99 | Drill | Atoka Operating, Inc. | May 22, 2009 | May 26, 2009 | — | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-13-256480 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 662 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Simpson | 7,845 | -7,183 |
| Birds Eye | 8,400 | -7,738 |
| Oil Creek | 9,045 | -8,383 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,376 | 7,406 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,654 | 12.25 | 550 S |
| 5.5 | 7,712 | 8.75 | 450 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 22, 2010 | Apr 1, 2010 | Yes |
| 00 | Jul 9, 2010 | — | — |
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 42-181-31450 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-181-31450 → 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/18131450, documented in the API reference.