WELL · 42-499-31221 · DISTRICT 6
Caldwell D. K. Estate #1
Wood County · Neuhoff (Woodbine) field · Vertical
Caldwell D. K. Estate #1 (API 42-499-31221) is a well in Wood County operated by Wisenbaker Production Company, completed February 11, 1984.
The RRC has issued one drilling permit, issued November 22, 1983, permitted to 10,500 ft.
Completion filings report 6 formation tops, including Austin Chalk, Sub-Clarksville, Top 3rd Sub-Calrksville, Woodbine.
Its 2 leases have reported 9.91M barrels of oil and 9.83M mcf of gas since January 1993, last reporting in July 2026. The leases carry 20 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Tyler, TX
- P-5 status
- Inactive (I)
- P-5 last filed
- Dec 10, 2010
- Permits on file
- 145
- Phone
- (903) 593-2588
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Wisenbaker Production Company |
| Production reports | Montare Operating, Ltd.through Apr 2026 |
| Latest permit | Wisenbaker Prod. Co.Nov 22, 1983 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,500
- total depth, ft
- 1
- permits on file
- Nov 22, 1983
- last permit issued
- Feb 11, 1984
- completed
- 9.91M
- cumulative oil, bbl
- 9.83M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 11, 1984
- 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 20 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Neuhoff (Buda-Woodbine) Unit O-6-12179 | Neuhoff (Buda-Woodbine) | Montare Operating, Ltd. | 20 | 9.91M | 9.83M | Jan 1993 – Jul 2026 |
| — O-6-12193 | — | — | 0 | 0 | 0 | — |
Oil, barrels lease total
Last 12 months 52,240 · prior 12 43,737(+19%)
Gas, mcf lease total
Last 12 months 303,497 · prior 12 65,607(+363%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Energy Production CorporationJan 1993 → Oct 2017
- 2Blackwell Exp & Development, LLCNov 2017 → Nov 2023
- 3Montare Operating, Ltd.Dec 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 221484-99 | Drill | Wisenbaker Prod. Co. | Nov 21, 1983 | Nov 22, 1983 | Jan 6, 1984 | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-6-12179 | — | — | — | — |
| — | — O-6-12193 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 377 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin ChalkBASE AUSTIN CHALK | 8,853 | -8,476 |
| Austin ChalkBASE OF AUSTIN CHALK | 8,853 | -8,476 |
| Sub-ClarksvilleTOP 1ST SUB-CLARKSVILLE | 9,039 | -8,662 |
| Top 3RD Sub-Calrksville | 9,206 | -8,829 |
| Sub-ClarksvilleTOP 3RD SUB-CLARKSVILLE | 9,206 | -8,829 |
| WoodbineTOP WOODBINE SAND | 9,374 | -8,997 |
| BudaTOP BUDA | 9,508 | -9,131 |
| Top Duck Creek Lime | 9,810 | -9,433 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,464 | 9,472 | Perforated |
| 9,464 | 9,578 | Perforated |
| 9,477 | 9,484 | Perforated |
| 9,525 | 9,553 | Perforated |
| 9,558 | 9,565 | Perforated |
| 9,570 | 9,578 | Perforated |
| 9,583 | 9,616 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 20 | 1,064 | 24 | 1,000 S |
| 9.625 | 8,563 | 12.25 | 500 S |
| 5.5 | 10,195 | 8.5 | 550 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 | Jul 17, 1987 | — | — |
| 00 | Jan 20, 1986 | Nov 27, 1985 | — |
| 00 | Jan 4, 1986 | Mar 5, 1984 | — |
| 00 | Apr 16, 1984 | Mar 5, 1984 | Yes |
| 00 | Apr 13, 1984 | Mar 5, 1984 | Yes |
| 00 | Mar 27, 1984 | Mar 5, 1984 | — |
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 42-499-31221 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-499-31221 → 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/49931221, documented in the API reference.