TEXAS · WELLS · STERLING COUNTY · API 42-431-32946 · DISTRICT 7B
Caldwell -26- #1
Sterling County · Credo E. (Cisco Up.) field · Producing · Vertical
Caldwell -26- #1 (API 42-431-32946) is a well in Sterling County operated by Bolding Energy LLC, completed November 2, 1998 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 28, 1998, permitted to 7,350 ft.
It was permitted by Hamman Oil & Refg. CO. and has since transferred to Bolding Energy LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Yates, S.A., Glor., Wc Mkr.
Its 2 leases have reported 2.78K barrels of oil and 350K mcf of gas since November 1998, last reporting in July 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Hamman Oil & Refg. Co.; the EWA schedule now lists a different operator.
- Based in
- Sterling City, TX
- P-5 status
- Active (A)
- P-5 last filed
- Dec 5, 2024
- Phone
- (325) 378-3100
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hamman Oil & Refining Company |
| Production reports | Bolding Energy, LLCthrough Apr 2026 |
| Latest permit | Hamman Oil & Refg. Co.Sep 28, 1998 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,350
- total depth, ft
- 1
- permits on file
- Sep 28, 1998
- last permit issued
- Nov 2, 1998
- completed
- 2.78K
- cumulative oil, bbl
- 350K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 1998 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 2, 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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Caldwell -26- G-10-174497 | Credo, E. (Cisco, Up.) | Bolding Energy, LLC | 1 | 0 | 222K | Sep 1999 – Jul 2026 |
| Caldwell -26- O-10-35929 | Credo, E. (Cisco, Up.) | Hamman Oil & Refining Company | 2 | 2.78K | 127K | Nov 1998 – Jan 2000 |
Gas, mcf lease total
Last 12 months 757 · prior 12 2,127(-64%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Hamman Oil & Refining CompanyNov 1998 → Aug 2020
- 2Bolding Energy, LLCSep 2020 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 479674-99 | Drill | Hamman Oil & Refg. Co. | Sep 24, 1998 | Sep 28, 1998 | Oct 2, 1998 | 8,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 2, 1998 | Caldwell -26- G-10-174497 | Credo E. (Cisco Up.) | Bolding Energy LLC | Producing | 7,350 |
| Oct 30, 1998 | Caldwell -26- O-10-35929 | Credo E. (Cisco Up.) | Hamman Oil & Refining Company | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,408 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,120 | 1,288 |
| S.A. | 1,830 | 578 |
| Glor. | 2,545 | -137 |
| WC MKR | 5,010 | -2,602 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,954 | 7,194 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,254 | 11 | 500 S |
| 4.5 | 7,349 | 7.875 | 700 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 | Nov 16, 1999 | Sep 27, 1999 | — |
| 00 | Oct 25, 1999 | — | — |
| 00 | Jan 27, 1999 | Nov 23, 1998 | Yes |
| 00 | Jan 5, 1999 | — | — |
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 42-431-32946 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-431-32946 → 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/43132946, documented in the API reference.