WELL · 42-125-30823 · DISTRICT 8
Herrera Unit #1
Dickens County · Soldier Mound (Tannehill) field · Injection · Vertical
Herrera Unit #1 (API 42-125-30823) is a well in Dickens County operated by Schalk Oil Company Inc., completed May 15, 2009 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued October 31, 2002, permitted to 5,200 ft.
Completion filings report 3 formation tops, including Stockwether, Croton, Tannehill.
No lease production has been reported under this well’s leases.
It holds an active disposal or injection permit, with 185K barrels injected in the 12 months reported through April 2026.
Operator of record
Wichita Falls, TX · P-5 Y, filed Feb 4, 2026 · 184 permits on file · (940) 782-6460
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Schalk Oil Company Inc. |
| Production reports | none |
| Latest permit | Schalk Oil Company, Inc.Oct 31, 2002 |
- 5,200
- total depth, ft
- 1
- permits on file
- Oct 31, 2002
- last permit issued
- May 15, 2009
- completed
- 0
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2003 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 15, 2009
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 |
|---|---|---|---|---|---|---|
| Herrera Unit O-11-68700 | Soldier Mound (Tannehill) | Schalk Oil Company, Inc. | 1 | 0 | 0 | Dec 2003 – Jul 2026 |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 525122-99 | Drill | Schalk Oil Company, Inc. | Oct 31, 2002 | Oct 31, 2002 | Nov 12, 2002 | 5,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-68700 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,310 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Stockwether | 4,794 | -2,484 |
| Croton | 4,868 | -2,558 |
| Tannehill | 4,930 | -2,620 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,936 | 4,946 | Perforated |
| 4,977 | 4,979 | Perforated |
| 4,982 | 4,984 | Perforated |
| 4,994 | 4,998 | Perforated |
| 5,001 | 5,003 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 250 | 17.5 | 250 S |
| 8.625 | 833 | 12.25 | 240 S |
| 5.5 | 5,014 | 7.875 | 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 26, 2010 | Jun 10, 2009 | — |
| 00 | Dec 21, 2004 | Dec 31, 2003 | — |
| 00 | Oct 18, 2004 | — | — |
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 42-125-30823 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-125-30823 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 185K
- bbl, last 12 reported months
- 3.79M
- bbl, all reported
- Apr 2026
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000093560 | H-1 Injection | Active | 2,000 | 2,350 | 4,790–5,010 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 185,145 · prior 12 135,733(+36%)
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/12530823, documented in the API reference.