WELL · 42-055-33876 · DISTRICT 1
Ross C. P. #12R
Caldwell County · Luling-Branyon field · Vertical
Ross C. P. #12R (API 42-055-33876) is a plugged well in Caldwell County, plugged April 1, 1997, last operated by Ginco Operating CO..
The RRC has issued one drilling permit, issued April 3, 1985, permitted to 2,300 ft.
It was permitted by Caldwell Oil & Gas CO., Inc. and has since transferred to Ginco Operating CO. on the wellbore schedule.
Completion filings report 4 formation tops, including Wilcox, Navarro, Austin Chalk, Buda.
Its lease has reported 1.19K barrels of oil and 21 mcf of gas since January 1993, last reporting in July 2026. The lease carries 21 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Caldwell Oil & Gas Co., Inc.; the EWA schedule now lists a different operator.
San Antonio, TX · P-5 Y, filed Nov 4, 2025 · 4 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ginco Operating Co. |
| Production reports | Ginco Operating Co.through Oct 1995 |
| Latest permit | Caldwell Oil & Gas Co., Inc.Apr 3, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 2,300
- total depth, ft
- 1
- permits on file
- Apr 3, 1985
- last permit issued
- Jan 16, 1986
- completed
- 1.19K
- cumulative oil, bbl
- 21
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 16, 1986
- Shut in
- —
- Plugged
- Apr 1, 1997
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; they carry 21 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Blackwell, Joe E. -A- O-1-1112 | Luling-Branyon | Ginco Operating Co. | 21 | 1.19K | 21 | 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.
- 1Penrod Oil Company of Texas, IncJan 1993 → Sep 1994
- 2Mobile Production Systems, Inc.Oct 1994 → Oct 1994
- 3Ginco Operating Co.Jun 1995 → Oct 1995
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 271399-99 | Drill | Caldwell Oil & Gas Co., Inc. | Apr 3, 1985 | Apr 3, 1985 | — | 2,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-1112 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Download CSV →
| Formation | MD ft |
|---|---|
| Wilcox | 140 |
| Navarro | 760 |
| Austin Chalk | 1,897 |
| Buda | 2,120 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,897 | 1,907 | Perforated |
| 1,924 | 1,998 | Perforated |
| 2,019 | 2,107 | Perforated |
| 2,122 | 2,164 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 5.5 | 2,188 | 6.75 | 300 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 17, 1986 | Mar 17, 1986 | — |
| 00 | Apr 16, 1986 | — | — |
| 00 | Mar 19, 1986 | Feb 19, 1986 | Yes |
| 00 | Mar 13, 1986 | — | — |
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 42-055-33876 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-055-33876 → 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/05533876, documented in the API reference.