TEXAS · WELLS · HEMPHILL COUNTY · ZYBACH 66 LEASE · API 42-211-32476 · DISTRICT 08
Zybach 66 #1
Hemphill County · Buffalo Wallow (Granite Wash) field · Producing · Vertical
Zybach 66 #1 (API 42-211-32476) is a well in Hemphill County operated by Unbridled Resources LLC, completed November 6, 2006 and listed as producing on the RRC schedule, shut in August 1, 2018.
The RRC has issued one drilling permit (amended once), issued November 8, 2000, permitted to 14,681 ft.
It was permitted by Dreyfus, Louis Natural Gas Corp and has since transferred to Unbridled Resources LLC on the wellbore schedule.
Completion filings report 7 formation tops, including B/Hebner-T/Douglas, B/Heebner-T/Douglas, T/Tonkawa, T/Granite Wash.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Dreyfus, Louis Natural Gas Corp; the EWA schedule now lists a different operator.
- Based in
- Oklahoma City, OK
- P-5 status
- Active (A)
- P-5 last filed
- Dec 17, 2025
- Permits on file
- 6
- Phone
- (318) 751-3917
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Unbridled Resources LLC |
| Production reports | 4P Energy Texas, LLCthrough Jul 2018 |
| Latest permit | Dreyfus, Louis Natural Gas CorpNov 8, 2000 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 14,681
- total depth, ft
- 2
- permits on file
- Nov 8, 2000
- last permit issued
- Nov 6, 2006
- completed
- 0
- cumulative oil, bbl
- 287K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2001 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 6, 2006
- Shut in
- Aug 1, 2018
- 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 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 |
|---|---|---|---|---|---|---|
| Zybach 66 G-14-184489 | Buffalo Wallow (Granite Wash) | Unbridled Resources, LLC | 1 | 0 | 287K | May 2001 – Jul 2026 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Dreyfus, Louis Natural Gas CorpMay 2001 → Nov 2001
- 2Dominion Oklahoma Texas E&P, IncDec 2001 → Aug 2007
- 3Linn Operating, Inc.Sep 2007 → Jun 2014
- 4Enervest Operating, L.L.C.Jan 2015 → Mar 2018
- 54P Energy Texas, LLCApr 2018 → Jul 2018
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 501768-98 | Drill | Dreyfus, Louis Natural Gas Corp | Sep 11, 2001 | Nov 8, 2000 | — | 14,800 |
| 501768-99 | Drill | Dreyfus, Louis Natural Gas Corp | Nov 8, 2000 | Nov 8, 2000 | Jan 29, 2001 | 14,800 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 6, 2006 | Zybach 66 G-14-184489 | Buffalo Wallow (Granite Wash) | Unbridled Resources LLC | Producing · shut in Aug 1, 2018 | 14,681 |
Formation tops
As filed on W-2/G-1. Subsea from 2,698 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| B/Hebner-T/Douglas | 8,130 | -5,432 |
| B/Heebner-T/Douglas | 8,130 | -5,432 |
| T/Tonkawa | 8,920 | -6,222 |
| T/Granite Wash | 10,460 | -7,762 |
| T/Buffalo Wallow Granite Wash | 10,985 | -8,287 |
| T/Buffao Wallow Granite Wash | 10,985 | -8,287 |
| T/Morrow | 14,043 | -11,345 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,032 | 11,206 | Perforated |
| 11,032 | 11,390 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 541 | 17.5 | 480 S |
| 13.375 | 542 | 17.5 | 480 S |
| 9.625 | 5,260 | 12.25 | 515 S |
| 5.5 | 13,985 | 7.875 | 530 S |
| 5.5 | 14,010 | 7.875 | 530 S |
| 9.625 | — | 17.5 | 335 S |
| 9.625 | — | 1.5 | 515 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 16, 2007 | Jan 9, 2007 | — |
| 00 | Sep 3, 2004 | Jun 25, 2004 | — |
| 00 | Oct 12, 2001 | Jun 29, 2001 | Yes |
| 00 | Sep 26, 2001 | — | — |
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 42-211-32476 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-211-32476 → 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/21132476, documented in the API reference.