WELL · 42-059-33437 · DISTRICT 7
Griggs R.L. #12
Callahan County · Mexia Creek (Congl) field · Vertical
Griggs R.L. #12 (API 42-059-33437) is a plugged well in Callahan County, plugged January 17, 2015, last operated by Southwest Gas Systems Inc..
The RRC has issued one drilling permit, issued November 30, 1981, permitted to 4,500 ft.
It was permitted by Sioux Natural Gas Corporation and has since transferred to Southwest Gas Systems Inc. on the wellbore schedule.
Completion filings report 2 formation tops, including Lake Sand, Marble Falls.
Operator of record
Permitted by Sioux Natural Gas Corporation; the EWA schedule now lists a different operator.
Spring, TX · P-5 Y, filed Aug 4, 2025 · 7 permits on file · (281) 610-7035
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Southwest Gas Systems Inc. |
| Production reports | Southwest Gas Systems, Inc.through Dec 2014 |
| Latest permit | Sioux Natural Gas CorporationNov 30, 1981 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,500
- total depth, ft
- 1
- permits on file
- Nov 30, 1981
- last permit issued
- Jan 19, 1982
- completed
- 0
- cumulative oil, bbl
- 12.3K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jan 2015
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 19, 1982
- Shut in
- —
- Plugged
- Jan 17, 2015
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 |
|---|---|---|---|---|---|---|
| Griggs,r.l. G-8-128937 | Mexia Creek (Congl) | Southwest Gas Systems, Inc. | 1 | 0 | 12.3K | Jan 1993 – Jan 2015 |
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.
- 1Southwest Gas Systems, Inc.Jan 1993 → Dec 2014
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 141935-99 | Drill | Sioux Natural Gas Corporation | Nov 30, 1981 | Nov 30, 1981 | — | 4,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-8-128937 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,806 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Lake Sand | 4,171 | -2,365 |
| Marble Falls | 4,206 | -2,400 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,171 | 4,175 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 114 | 11 | 100 S |
| 2.375 | 4,148 | — | — |
| 4.5 | 4,321 | 7.875 | 175 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 | Dec 20, 1988 | Nov 8, 1988 | — |
| 00 | Dec 7, 1988 | — | — |
| 00 | Jan 12, 1984 | Nov 18, 1982 | — |
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 42-059-33437 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-059-33437 → 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/05933437, documented in the API reference.