WELL · 42-181-31443 · DISTRICT 9
Irby #2
Grayson County · Mulder (Oil Creek) field · Producing · Directional
Irby #2 (API 42-181-31443) is a well in Grayson County operated by Tatanka Operating LLC, completed October 22, 2009 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued June 17, 2008, permitted to 12,500 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 Grey, Pennsylvanian, Oil Creek.
Its lease has reported 47.8K barrels of oil and 118K mcf of gas since October 2009, last reporting in July 2026.
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.
- 12,500
- total depth, ft
- 2
- permits on file
- May 26, 2009
- last permit issued
- Oct 22, 2009
- completed
- 47.8K
- cumulative oil, bbl
- 118K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2009 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 22, 2009
- 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 O-13-31443 | Mulder (Oil Creek) | Tatanka Operating, LLC | 1 | 47.8K | 118K | Oct 2009 – Jul 2026 |
Oil, barrels lease total
Last 12 months 1,418 · prior 12 1,557(-9%)
Gas, mcf lease total
Last 12 months 7,300 · prior 12 7,300(+0%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Atoka Operating, Inc.Oct 2009 → Apr 2023
- 2Tatanka Operating, LLCMay 2023 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 663096-98 | Drill | Atoka Operating, Inc. | May 22, 2009 | May 26, 2009 | Aug 25, 2009 | 12,500 |
| 663096-99 | Drill | Atoka Operating, Inc. | May 28, 2008 | Jun 17, 2008 | — | 12,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-31443 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 675 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Grey | 7,220 | -6,545 |
| PennsylvanianPENN UNCF. | 8,766 | -8,091 |
| Oil Creek | 9,320 | -8,645 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,320 | 9,346 | Perforated |
| 9,353 | 9,370 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,780 | 12.25 | 650 S |
| 5.5 | 9,538 | 8.75 | 1,200 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 | Jan 29, 2010 | Oct 26, 2009 | Yes |
| 00 | Dec 3, 2009 | — | — |
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 42-181-31443 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-181-31443 → 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/18131443, documented in the API reference.