WELL · 42-177-31950 · DISTRICT 1
Griffin-Ruddock Oil Unit #1
Gonzales County · Pilgrim (Austin Chalk) field · Horizontal
Griffin-Ruddock Oil Unit #1 (API 42-177-31950) is a plugged horizontal well in Gonzales County, plugged November 16, 2022, last operated by Rocc Operating LLC.
The RRC has issued one drilling permit (amended once), issued October 22, 1991, permitted to 14,000 ft.
It was permitted by Tana Oil And Gas Corporation and has since transferred to Rocc Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Taylor, Anacacho, Austin Chalk.
Its lease has reported 57.9K barrels of oil and 45.5K mcf of gas since January 1993, last reporting in July 2026.
Operator of record
Permitted by Tana Oil and Gas Corporation; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jul 3, 2024 · 30 permits on file · (888) 292-5017
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Rocc Operating LLC |
| Production reports | Lonestar Operating, LLCthrough Nov 2017 |
| Latest permit | Tana Oil and Gas CorporationOct 22, 1991 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 14,000
- total depth, ft
- 2
- permits on file
- Oct 22, 1991
- last permit issued
- Jan 2, 1992
- completed
- 57.9K
- cumulative oil, bbl
- 45.5K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 2, 1992
- Shut in
- —
- Plugged
- Nov 16, 2022
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 |
|---|---|---|---|---|---|---|
| Griffin-Ruddock Oil Unit O-1-13480 | Pilgrim (Austin Chalk) | Rocc Operating, LLC | 1 | 57.9K | 45.5K | Jan 1993 – Jul 2026 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Tana Oil and Gas CorporationJan 1993 → Oct 1995
- 2Rosewood Resources, Inc.Nov 1995 → Jan 1997
- 3Wilson, Billy R.Feb 1997 → Jul 2006
- 4Lucas Energy, Inc.Aug 2006 → Feb 2017
- 5Lonestar Operating, LLCOct 2017 → Nov 2017
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 392825-98 | Drill | Tana Oil and Gas Corporation | Apr 10, 1992 | Oct 22, 1991 | — | 14,000 |
| 392825-99 | Drill | Tana Oil and Gas Corporation | Oct 11, 1991 | Oct 22, 1991 | Oct 28, 1991 | 14,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-13480 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 239 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Taylor | 7,270 | -7,031 |
| Anacacho | 8,185 | -7,946 |
| Austin Chalk | 8,305 | -8,066 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,507 | 8,469 | Perforated |
| 8,537 | 11,430 | Perforated |
| 8,567 | 8,724 | Perforated |
| 8,580 | 11,124 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 915 | 12.25 | 470 S |
| 7 | 8,270 | 8.75 | 240 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 | Apr 7, 1992 | Mar 12, 1992 | Yes |
| 00 | Mar 31, 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 42-177-31950 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-177-31950 → 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/17731950, documented in the API reference.