WELL · 42-447-35229 · DISTRICT 7
Shillito #1
Throckmorton County · Irwin (Mississippi) field · NO Production · Vertical
Shillito #1 (API 42-447-35229) is a well in Throckmorton County operated by WB Mullin Operating LLC, completed January 1, 1992 and listed as no production on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued November 14, 1991, permitted to 4,800 ft.
It was permitted by Cooper Oil & Gas, Inc. and has since transferred to WB Mullin Operating LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Caddo, Mississippian.
Its lease has reported 37.5K barrels of oil and 17.3K mcf of gas since January 1993, last reporting in July 2026.
Operator of record
Permitted by Cooper Oil & Gas, Inc.; the EWA schedule now lists a different operator.
Graham, TX · P-5 Y, filed Jul 4, 2026 · 12 permits on file · (469) 387-8046
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | WB Mullin Operating LLC |
| Production reports | WB Mullin Operating LLCthrough May 2024 |
| Latest permit | Cooper Oil & Gas, Inc.Nov 14, 1991 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,800
- total depth, ft
- 2
- permits on file
- Nov 14, 1991
- last permit issued
- Jan 1, 1992
- completed
- 37.5K
- cumulative oil, bbl
- 17.3K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 1, 1992
- 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 |
|---|---|---|---|---|---|---|
| Shillito O-8-26408 | Irwin (Mississippi) | WB Mullin Operating LLC | 1 | 37.5K | 17.3K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 0 · prior 12 1(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Cooper Oil & Gas, Inc.Jan 1993 → May 2010
- 2Cooper Oil & Gas, LLCJun 2010 → Nov 2021
- 3WB Mullin Operating LLCDec 2021 → May 2024
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 393805-98 | Drill | Cooper Oil & Gas, Inc. | Jan 3, 1992 | Nov 14, 1991 | Nov 21, 1991 | 4,800 |
| 393805-99 | Drill | Cooper Oil & Gas, Inc. | Nov 8, 1991 | Nov 14, 1991 | — | 4,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-26408 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,314 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Caddo | 4,060 | -2,746 |
| MississippianMISSISSIPPI | 4,580 | -3,266 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,580 | 4,591 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 120 | 12.25 | 100 S |
| 4.5 | 4,579 | 7.875 | 150 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 | Mar 3, 1992 | Jan 8, 1992 | Yes |
| 00 | Jan 21, 1992 | — | — |
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 42-447-35229 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-447-35229 → 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/44735229, documented in the API reference.