WELL · 42-131-37026 · DISTRICT 4
Duval County Ranch Co. K #51
Duval County · Charamousca West (3350) field · Vertical
Duval County Ranch CO. K #51 (API 42-131-37026) is a well in Duval County operated by Texas Petroleum Investment CO., completed November 11, 1987.
The RRC has issued 3 drilling permits between 1987 and 1999, permitted to 4,750 ft.
It was permitted by Southwestern Energy Prod. CO. and has since transferred to Texas Petroleum Investment CO. on the wellbore schedule.
Completion filings report one formation top, including Gumbo.
Its 3 leases have reported 82.3K barrels of oil and 303K mcf of gas since January 1993, last reporting in July 2026. The leases carry 11 wells, so these are lease totals, not this well alone.
Operator of record
Texas Petroleum Investment Co.
Permitted by Southwestern Energy Prod. Co.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jul 4, 2026 · 233 permits on file · (888) 214-3575
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Texas Petroleum Investment Co. |
| Production reports | Texas Petroleum Investment Co.through Apr 2026 |
| Latest permit | Southwestern Energy Prod. Co.Jul 13, 1999 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,750
- total depth, ft
- 3
- permits on file
- Jul 13, 1999
- last permit issued
- Nov 11, 1987
- completed
- 82.3K
- cumulative oil, bbl
- 303K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 11, 1987
- Shut in
- —
- Plugged
- —
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 3 leases this well is completed on; they carry 11 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Duval County Ranch Co. -K- G-4-174106 | Charamousca, West (Jackson) | Texas Petroleum Investment Co. | 1 | 0 | 51.2K | Jul 1999 – Jul 2026 |
| Duval County Ranch Co. "K" O-4-11329 | Charamousca, West (3350) | Texas Petroleum Investment Co. | 7 | 69.1K | 190K | Jan 1993 – Jul 2026 |
| Duval County Ranch Co. 'K' O-4-11792 | Charamousca, W. (Yegua 25) | Texas Petroleum Investment Co. | 3 | 13.3K | 62.3K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 1,144 · prior 12 1,275(-10%)
Gas, mcf lease total
Last 12 months 2,731 · prior 12 2,505(+9%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Exxon Corp.Jan 1993 → Aug 1996
- 2Southwestern Energy Prod. Co.Sep 1996 → Dec 2006
- 3Sequoia Management, LLCJan 2007 → Nov 2009
- 4Energyquest II, LLCDec 2009 → Jun 2010
- 5Texas Petroleum Investment Co.Jul 2010 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 485831-99 | Recompletion | Southwestern Energy Prod. Co. | Jul 13, 1999 | Jul 13, 1999 | Jul 19, 1999 | 2,430 |
| 433483-99 | Recompletion | Exxon Corp. | Mar 3, 1995 | Mar 30, 1995 | May 10, 1995 | 2,587 |
| 332621-99 | Drill | Exxon Corp. | Jul 8, 1987 | Jul 10, 1987 | — | 4,750 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-174106 | — | — | — | — |
| — | — O-4-11329 | — | — | — | — |
| — | — O-4-11792 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 393 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Gumbo | 1,506 | -1,113 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 779 | 795 | Perforated |
| 803 | 809 | Perforated |
| 2,528 | 2,537 | Perforated |
| 3,316 | 3,398 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 277 | 12.25 | 290 S |
| 9.625 | 278 | 12.25 | 270 S |
| 5.5 | 3,750 | 8.5 | 570 S |
| 5.5 | 3,751 | 8.5 | 570 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 | Oct 5, 1999 | Sep 2, 1999 | Yes |
| 00 | Sep 14, 1999 | — | — |
| 00 | Nov 7, 1995 | Jun 6, 1995 | Yes |
| 00 | Jun 15, 1995 | Nov 25, 1987 | Yes |
| 00 | Jan 20, 1988 | Nov 25, 1987 | Yes |
| 00 | Dec 30, 1987 | — | — |
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 42-131-37026 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-131-37026 → 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/13137026, documented in the API reference.