WELL · 42-495-31979 · DISTRICT 8
Grizzly #1H
Winkler County · Horizontal
Grizzly #1H (API 42-495-31979) is a permitted horizontal well in Winkler County filed by Impetro Operating LLC; no completion report is on file yet.
The RRC has issued 4 drilling permits between 1985 and 2016, permitted to 22,000 ft.
Completion filings report 19 formation tops, including Rustler, Delaware, Bone Spring, Strawn.
Its 4 leases have reported 1.76K barrels of oil and 2.82M mcf of gas since January 1993, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
Fort Worth, TX · P-5 Y, filed Nov 4, 2025 · 97 permits on file · (210) 865-1239
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Matador Production Companythrough Apr 2026 |
| Latest permit | Impetro Operating LLCOct 24, 2016 |
- 22,000
- total depth, ft
- 4
- permits on file
- Oct 24, 2016
- last permit issued
- —
- completed
- 1.76K
- cumulative oil, bbl
- 2.82M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- 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 4 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Grizzly A G-10-284973 | Phantom (Wolfcamp) | Matador Production Company | 1 | 0 | 2.04M | Feb 2017 – Jul 2026 |
| Grizzly O-10-48817 | Phantom (Wolfcamp) | Impetro Operating LLC | 1 | 1.76K | 8.22K | Feb 2017 – Mar 2019 |
| Tubb Estate 21 G-10-163162 | Crittendon (Morrow) | Impetro Operating LLC | 1 | 0 | 245K | Feb 1997 – Feb 2017 |
| Tubb Estate "21" G-10-121656 | Crittendon (Fusselman) | Heritage Resources, Inc. | 1 | 0 | 524K | Jan 1993 – Feb 1997 |
Gas, mcf lease total
Last 12 months 136,623 · prior 12 142,579(-4%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Heritage Resources, Inc.Jan 1993 → Oct 2001
- 2Heritage Standard CorporationNov 2001 → Jun 2009
- 3White Oak Operating Company LLCAug 2013 → Mar 2014
- 4Impetro Operating LLCApr 2014 → Nov 2020
- 5Ameredev Operating, LLCDec 2020 → May 2024
- 6Ameredev Texas, LLCJun 2024 → Jan 2025
- 7Matador Production CompanyFeb 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 819170-99 | Recompletion | Impetro Operating LLC | Oct 6, 2016 | Oct 24, 2016 | Nov 13, 2016 | 12,300 |
| 455141-99 | Recompletion | Heritage Resources, Inc. | Nov 14, 1996 | Nov 18, 1996 | Nov 21, 1996 | 19,706 |
| 304172-99 | Drill | Heritage Resources, Inc. | Jul 14, 1986 | Jul 16, 1986 | — | 19,706 |
| 286523-99 | Drill | Heritage Resources, Inc. | Sep 6, 1985 | Oct 4, 1985 | Nov 7, 1985 | 22,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-10-121656 | — | — | — | — |
| — | — G-10-163162 | — | — | — | — |
| — | — G-10-284973 | — | — | — | — |
| — | — O-10-48817 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,905 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| RustlerRUSTLER - POSSIBLE FLOW; POSSIBL | 1,000 | 1,905 |
| Delaware | 4,844 | -1,939 |
| Bone SpringBONE SPRINGS | 8,751 | -5,846 |
| Strawn | 13,963 | -11,058 |
| Atoka | 14,799 | -11,894 |
| Mississippian | 18,084 | -15,179 |
| Silurian (undifferentiated)SILURIAN | 18,842 | -15,937 |
| Brushy Canyon | — | — |
| Canyon | — | — |
| Cherry Canyon | — | — |
| Clear ForkCLEARFORK | — | — |
| Colby-Queen | — | — |
| Glorieta | — | — |
| Holt | — | — |
| Montoya | — | — |
| QueenQUEEN-SEVEN RIVERS | — | — |
| RustlerRUSTLER - POSSIBLE FLOW; POSSIBL | — | — |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | — | — |
| Wichita-AlbanyWICHITA ALBANY | — | — |
| Yates | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,701 | 16,807 | Perforated |
| 15,440 | 15,470 | Perforated |
| 15,634 | 15,658 | Perforated |
| 16,418 | 16,446 | Perforated |
| 18,902 | 18,918 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 20 | 909 | 26 | 1,050 S |
| 13.375 | 4,727 | 17.5 | 1,150 S |
| 10.75 | 13,316 | 12.25 | 1,600 S |
| 5.5 | 16,917 | 8.75 | 2,075 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 | Aug 24, 2020 | Mar 12, 2020 | — |
| 00 | Feb 12, 2019 | Aug 24, 2018 | — |
| 00 | Aug 23, 2017 | Jul 20, 2017 | Yes |
| 00 | Jul 21, 1997 | May 28, 1997 | Yes |
| 00 | Jun 17, 1997 | — | — |
| 00 | Aug 14, 1986 | Jul 11, 1986 | Yes |
| 00 | Aug 12, 1986 | — | — |
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 42-495-31979 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-495-31979 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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/49531979, documented in the API reference.