WELL · 42-451-31576 · DISTRICT 7
KWB Unit #66
Tom Green County · K. W. B. (Strawn) field · Vertical
Kwb Unit #66 (API 42-451-31576) is a well in Tom Green County operated by Sonoran Energy Inc., completed March 24, 1992.
The RRC has issued 2 drilling permits (amended once) between 1985 and 2009, permitted to 7,000 ft.
Completion filings report 6 formation tops, including San Angelo, Clear Fork, Canyon, Cisco.
Its 3 leases have reported 112K barrels of oil and 684K mcf of gas since January 1993, last reporting in July 2026. The leases carry 89 wells, so these are lease totals, not this well alone.
Operator of record
Addison, TX · P-5 Y, filed Dec 4, 2025 · 14 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sonoran Energy Inc. |
| Production reports | Barrow-Shaver Resources Co.through Jan 2025 |
| Latest permit | Sonoran Energy Inc.Apr 6, 2009 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,000
- total depth, ft
- 3
- permits on file
- Apr 6, 2009
- last permit issued
- Mar 24, 1992
- completed
- 112K
- cumulative oil, bbl
- 684K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 24, 1992
- 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 3 leases this well is completed on; they carry 89 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| KWB G-9-254433 | K.W.B. (Canyon, Upper) | Barrow-Shaver Resources Co. | 1 | 0 | 125K | Apr 2007 – Jul 2026 |
| KWB Unit O-9-13227 | K. W. B. (Strawn) | Sonoran Energy Inc. | 88 | 112K | 559K | Jan 1993 – Jul 2026 |
| — O-9-9479 | — | — | 0 | 0 | 0 | — |
Gas, mcf lease total
Last 12 months 0 · prior 12 68(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pyramid Energy, Inc.Jan 1993 → Jun 1994
- 2Rio Grande Drilling CompanyJul 1994 → Dec 1997
- 3Smith Pipe of AbileneJan 1998 → Aug 1998
- 4L.C.S. Production CompanySep 1998 → Jan 1999
- 5Mideast Gas Systems, Inc.Feb 1999 → Aug 2001
- 6Baron Energy Ltd.Sep 2001 → Jul 2005
- 7Sonoran Energy Inc.Apr 2007 → Jun 2010
- 8Barrow-Shaver Resources Co.Jul 2010 → Jan 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 637180-98 | Recompletion | Sonoran Energy Inc. | Mar 16, 2009 | Apr 6, 2009 | Dec 10, 2007 | 6,370 |
| 637180-99 | Recompletion | Sonoran Energy Inc. | Apr 16, 2007 | Apr 23, 2007 | Mar 7, 2007 | 6,592 |
| 272352-99 | Drill | Tucker Drilling Company, Inc. | Apr 10, 1985 | Apr 16, 1985 | Apr 24, 1985 | 7,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-9-254433 | — | — | — | — |
| — | — O-9-9479 | — | — | — | — |
| — | — O-9-13227 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,096 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Angelo | 680 | 1,416 |
| San AngeloSAN ANGELO SAND | 800 | 1,296 |
| Clear ForkCLEARFORK | 822 | 1,274 |
| Clear ForkCLEARFORK | 930 | 1,166 |
| Canyon | 5,086 | -2,990 |
| CanyonCANYON SAND | 5,273 | -3,177 |
| CiscoCISCO SS | 5,298 | -3,202 |
| L Canyon SS | 5,686 | -3,590 |
| StrawnSTRAWN SS | 6,430 | -4,334 |
| StrawnSTRAWN SAND | 6,440 | -4,344 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,278 | 5,313 | Perforated |
| 6,381 | 6,383 | Perforated |
| 6,386 | 6,409 | Perforated |
| 6,411 | 6,419 | Perforated |
| 6,438 | 6,440 | Perforated |
| 6,442 | 6,519 | Perforated |
| 6,444 | 6,453 | Perforated |
| 6,459 | 6,463 | Perforated |
| 6,465 | 6,470 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 428 | 12.25 | 300 S |
| 8.625 | 442 | 12.25 | 300 S |
| 5.5 | 6,530 | 7.875 | 385 S |
| 5.5 | 6,592 | 7.875 | 450 S |
| 5.5 | — | 7.875 | 825 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 | May 10, 2010 | May 19, 2008 | Yes |
| 00 | Feb 8, 2010 | — | — |
| 00 | Jun 1, 1992 | May 15, 1992 | — |
| 00 | Mar 9, 1992 | Jun 3, 1985 | — |
| 00 | Jun 12, 1985 | Jun 3, 1985 | — |
| 00 | Jun 8, 1985 | — | — |
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 42-451-31576 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-451-31576 → 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/45131576, documented in the API reference.