WELL · 42-479-37434 · DISTRICT 4
Clark-Hereford #7
Webb County · Clark Ranch (Lobo) field · Directional
Clark-Hereford #7 (API 42-479-37434) is a well in Webb County operated by Columbus Energy LLC, completed May 6, 2000.
The RRC has issued 2 drilling permits (amended once) between 2000 and 2008, permitted to 7,600 ft.
Completion filings report 4 formation tops, including Queen City, Reklaw, Carrizo, Wilcox.
No lease production has been reported under this well’s leases.
Operator of record
Houston, TX · P-5 Y, filed Apr 4, 2026 · 51 permits on file · (956) 722-5238
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Columbus Energy LLC |
| Production reports | Columbus Energy, LLCthrough Aug 2016 |
| Latest permit | Columbus Energy, LLCOct 7, 2008 |
- 7,600
- total depth, ft
- 3
- permits on file
- Oct 7, 2008
- last permit issued
- May 6, 2000
- completed
- 0
- cumulative oil, bbl
- 246K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2000 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 6, 2000
- 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 2 leases this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Clark-Hereford G-4-242291 | Clark Ranch (Wilcox C) | Columbus Energy, LLC | 1 | 0 | 165K | May 2008 – Jul 2026 |
| Clark-Hereford G-4-179998 | Clark Ranch (Lobo) | Columbus Energy, LLC | 1 | 0 | 80.7K | May 2000 – Dec 2008 |
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.
- 1Columbus Energy Corp.May 2000 → Jan 2004
- 2Columbus Energy, LLCMay 2008 → Aug 2016
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 671985-99 | Recompletion | Columbus Energy, LLC | Sep 26, 2008 | Oct 7, 2008 | Jun 1, 2008 | 7,600 |
| 492049-98 | Drill | Columbus Energy Corp. | Oct 4, 2000 | Feb 23, 2000 | Apr 2, 2000 | 7,600 |
| 492049-99 | Drill | Columbus Energy Corp. | Feb 14, 2000 | Feb 23, 2000 | — | 7,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-4-179998 | — | — | — | — |
| — | — G-4-242291 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 381 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 1,428 | -1,047 |
| Reklaw | 2,398 | -2,017 |
| Carrizo | 2,582 | -2,201 |
| Wilcox | 3,504 | -3,123 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,090 | 5,104 | Perforated |
| 5,112 | 5,130 | Perforated |
| 5,136 | 5,140 | Perforated |
| 6,393 | 6,400 | Perforated |
| 7,244 | 7,246 | Perforated |
| 7,279 | 7,281 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 534 | 12.25 | 271 S |
| 7 | 5,057 | 8.75 | 340 S |
| 2.875 | 7,554 | 6.125 | 632 S |
| 2.875 | 7,554 | 6.25 | 632 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 11, 2008 | Oct 9, 2008 | Yes |
| 00 | Nov 20, 2008 | — | — |
| 00 | Feb 7, 2001 | Jun 23, 2000 | Yes |
| 00 | Dec 15, 2000 | — | — |
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 42-479-37434 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-37434 → 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/47937434, documented in the API reference.