WELL · 42-089-32589 · DISTRICT 3
Hefner Unit #1
Colorado County · Mustang Creek (Miocene 3400) field · Vertical
Hefner Unit #1 (API 42-089-32589) is a plugged well in Colorado County, plugged January 2, 2018, last operated by Viper S.W.D. LLC.
The RRC has issued one drilling permit, issued September 25, 2008, permitted to 3,650 ft.
It was permitted by Sue-Ann Operating, L.C. and has since transferred to Viper S.W.D. LLC on the wellbore schedule.
Completion filings report one formation top, including Miocene (undifferentiated).
Operator of record
Permitted by Sue-Ann Operating, L.C.; the EWA schedule now lists a different operator.
EL Campo, TX · P-5 Active, filed Jun 18, 2025 · 44 permits on file · (979) 541-5262
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Viper S.W.D. LLC |
| Production reports | Viper S.W.D., LLCthrough May 2017 |
| Latest permit | Sue-Ann Operating, L.C.Sep 25, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,650
- total depth, ft
- 1
- permits on file
- Sep 25, 2008
- last permit issued
- Oct 18, 2008
- completed
- 0
- cumulative oil, bbl
- 704K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2008 THROUGH Jan 2018
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 18, 2008
- Shut in
- —
- Plugged
- Jan 2, 2018
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 |
|---|---|---|---|---|---|---|
| Hefner Unit G-3-247937 | Mustang Creek (Miocene 3400) | Viper S.W.D., LLC | 1 | 0 | 704K | Oct 2008 – Jan 2018 |
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.
- 1Sue-Ann Operating, L.C.Oct 2008 → Dec 2014
- 2Viper S.W.D., LLCMar 2015 → May 2017
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 670533-99 | Drill | Sue-Ann Operating, L.C. | Sep 4, 2008 | Sep 25, 2008 | Sep 28, 2008 | 3,650 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-3-247937 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 171 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE | 3,348 | -3,177 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,348 | 3,350 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 403 | 12.25 | 215 S |
| 2.875 | 3,622 | 7.875 | 695 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 23, 2009 | Apr 13, 2009 | Yes |
| 00 | Jun 12, 2009 | — | — |
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 42-089-32589 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-089-32589 → 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/08932589, documented in the API reference.