TEXAS · WELLS · STERLING COUNTY · API 42-431-33154 · DISTRICT 7B
Caldwell 8 #1
Sterling County · W. A. M. (Wolfcamp) field · Producing · Vertical
Caldwell 8 #1 (API 42-431-33154) is a well in Sterling County operated by Burk Royalty CO. Ltd., completed July 31, 2008 and listed as producing on the RRC schedule.
The RRC has issued 2 drilling permits between 2005 and 2007, permitted to 7,775 ft.
It was permitted by Range Production Company and has since transferred to Burk Royalty CO. Ltd. on the wellbore schedule.
Completion filings report 10 formation tops, including San Andres, T/San Andres, Clear Fork, T/Clearfork.
Its 2 leases have reported 15.2K barrels of oil and 273K mcf of gas since October 2005, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Range Production Company; the EWA schedule now lists a different operator.
- Based in
- Wichita Falls, TX
- P-5 status
- Active (A)
- P-5 last filed
- Dec 4, 2025
- Permits on file
- 384
- Phone
- (940) 397-8600
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Burk Royalty Co. Ltd. |
| Production reports | Burk Royalty Co., Ltd.through Apr 2026 |
| Latest permit | Range Production CompanySep 27, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,775
- total depth, ft
- 2
- permits on file
- Sep 27, 2007
- last permit issued
- Jul 31, 2008
- completed
- 15.2K
- cumulative oil, bbl
- 273K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2005 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 31, 2008
- 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 |
|---|---|---|---|---|---|---|
| Caldwell 8 O-10-37739 | Credo, E. (Cisco, Up.) | Burk Royalty Co., Ltd. | 1 | 5.74K | 63.1K | Oct 2005 – Jul 2026 |
| Caldwell 8 O-10-38285 | W. A. M. (Wolfcamp) | Burk Royalty Co., Ltd. | 1 | 9.51K | 210K | Sep 2007 – Jul 2026 |
Gas, mcf lease total
Last 12 months 7,695 · prior 12 8,207(-6%)
Oil, barrels lease total
Last 12 months 230 · prior 12 256(-10%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Range Production CompanyOct 2005 → Jul 2014
- 2EQT Production Texas, LLCAug 2014 → May 2018
- 3Stanolind Production LLCJul 2018 → Dec 2020
- 4Slant Operating, LLCJan 2021 → Dec 2021
- 5Burk Royalty Co., Ltd.Jan 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 646575-99 | Recompletion | Range Production Company | Sep 21, 2007 | Sep 27, 2007 | Sep 10, 2007 | 7,775 |
| 605001-99 | Drill | Range Production Company | Aug 16, 2005 | Aug 17, 2005 | Sep 6, 2005 | 8,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jul 31, 2008 | Caldwell 8 O-10-38285 | W. A. M. (Wolfcamp) | Burk Royalty Co. Ltd. | Producing | 7,775 |
| Oct 5, 2005 | Caldwell 8 O-10-37739 | Credo E. (Cisco Up.) | Burk Royalty Co. Ltd. | Partial Plug · shut in Aug 1, 2007 | 7,775 |
Formation tops
As filed on W-2/G-1. Subsea from 2,442 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 1,820 | 622 |
| T/San Andres | 1,820 | 622 |
| Clear ForkCLEARFORK | 3,480 | -1,038 |
| T/Clearfork | 3,480 | -1,038 |
| Credo Wolfcamp A | 6,935 | -4,493 |
| T/Credo Wolfcamp A | 6,935 | -4,493 |
| Credo Wolfcamp B | 7,030 | -4,588 |
| T/Credo Wolfcamp B | 7,030 | -4,588 |
| Cisco | 7,135 | -4,693 |
| Canyon | 7,670 | -5,228 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,976 | 6,979 | Perforated |
| 6,984 | 6,987 | Perforated |
| 6,994 | 6,996 | Perforated |
| 7,320 | 7,482 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,815 | 12.25 | 1,400 S |
| 5.5 | 7,775 | 7.875 | 950 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 | Feb 17, 2009 | Aug 22, 2008 | — |
| 00 | Nov 27, 2007 | Sep 28, 2007 | Yes |
| 00 | Nov 6, 2007 | — | — |
| 00 | Oct 11, 2006 | Oct 21, 2005 | Yes |
| 00 | Jun 16, 2006 | — | — |
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 42-431-33154 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-431-33154 → 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/43133154, documented in the API reference.