TEXAS · WELLS · WEBB COUNTY · API 42-479-33441 · DISTRICT 04
Derby #1
Webb County · Villegas (Middle Wilcox 7950) field · Producing · Vertical
Derby #1 (API 42-479-33441) is a well in Webb County operated by Hilcorp Energy Company, completed May 26, 1998 and listed as producing on the RRC schedule.
The RRC has issued 2 drilling permits between 1982 and 1998, permitted to 10,800 ft.
It was permitted by Conoco Inc. and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Its 2 leases have reported 6.14K barrels of oil and 687K mcf of gas since January 1993, last reporting volume in April 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Conoco Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,458
- Phone
- (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hilcorp Energy Company |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Conoco Inc.Jun 1, 1998 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,800
- total depth, ft
- 2
- permits on file
- Jun 1, 1998
- last permit issued
- May 26, 1998
- completed
- 6.14K
- cumulative oil, bbl
- 687K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 26, 1998
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 |
|---|---|---|---|---|---|---|
| Derby G-4-168697 | Villegas (Middle Wilcox 7950) | Hilcorp Energy Company | 1 | 6.1K | 628K | May 1998 – Apr 2026 |
| Derby G-4-105942 | Vaquillas Ranch (Lobo Cons.) | Conoco Inc. | 1 | 42 | 59.6K | Jan 1993 – Apr 1998 |
Gas, mcf lease total
Last 12 months 2,256 · prior 12 4,836(-53%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Transamerican Natural Gas Corp.Jan 1993 → Jan 1995
- 2Transtexas Gas CorporationFeb 1995 → May 1997
- 3Conoco Inc.Jun 1997 → Dec 2002
- 4Conocophillips CompanyJan 2003 → Dec 2015
- 5Hilcorp Energy CompanyJan 2016 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 476760-99 | Recompletion | Conoco Inc. | Jun 1, 1998 | Jun 1, 1998 | May 18, 1998 | 10,800 |
| 170779-99 | Drill | GHR Enrgy.corp-Amer.coastal Corp | Sep 2, 1982 | Sep 2, 1982 | Dec 28, 1982 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 26, 1998 | Derby G-4-168697 | Villegas (Middle Wilcox 7950) | Hilcorp Energy Company | Producing | 10,800 |
| Apr 9, 1983 | Derby G-4-105942 | Vaquillas Ranch (Lobo Cons.) | Conoco Inc. | Not on Schedule | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,152 | 8,164 | Perforated |
| 9,492 | 9,829 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 760 | 14.75 | 530 S |
| 7.625 | 8,000 | 9.875 | 720 S |
| 2.375 | 9,360 | — | — |
| 5 | 10,800 | 6.75 | 300 S |
| 5 | 11,800 | 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jul 21, 1998 | Jun 30, 1998 | Yes |
| 00 | Jul 8, 1998 | — | — |
| 00 | Jan 12, 1984 | May 6, 1983 | — |
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 42-479-33441 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-479-33441 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/47933441, documented in the API reference.