TEXAS · WELLS · HEMPHILL COUNTY · HEFLEY LEASE · API 42-211-33019 · DISTRICT 08
Hefley #4101P
Hemphill County · Buffalo Wallow (Granite Wash) field · Producing · Vertical
Hefley #4101P (API 42-211-33019) is a well in Hemphill County operated by Presidio Petroleum LLC, completed August 20, 2004 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 29, 2004, permitted to 11,865 ft.
It was permitted by Patina Oil & Gas Corporation and has since transferred to Presidio Petroleum LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Oswego, Granite Wash.
Its lease has reported 12.6K barrels of oil and 864K mcf of gas since August 2004, last reporting volume in March 2026.
Operator of record
Permitted by Patina Oil & Gas Corporation; the EWA schedule now lists a different operator.
- Based in
- Canadian, TX
- P-5 status
- Active (A)
- P-5 last filed
- May 1, 2026
- Permits on file
- 13
- Phone
- (806) 217-4483
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Presidio Petroleum LLC |
| Production reports | Presidio Petroleum LLCthrough Mar 2026 |
| Latest permit | Patina Oil & Gas CorporationJun 29, 2004 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,865
- total depth, ft
- 1
- permits on file
- Jun 29, 2004
- last permit issued
- Aug 20, 2004
- completed
- 12.6K
- cumulative oil, bbl
- 864K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2004 THROUGH Mar 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 20, 2004
- Shut in
- —
- 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 |
|---|---|---|---|---|---|---|
| Hefley G-14-204651 | Buffalo Wallow (Granite Wash) | Presidio Petroleum LLC | 1 | 12.6K | 864K | Aug 2004 – Mar 2026 |
Gas, mcf lease total
Last 12 months 6,815 · prior 12 6,978(-2%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Patina Oil & Gas CorporationAug 2004 → May 2005
- 2Noble Energy Production, Inc.Jun 2005 → Aug 2007
- 3Noble Energy IncSep 2007 → Aug 2012
- 4Unit Petroleum CompanySep 2012 → Sep 2023
- 5Eqv Operating LLCOct 2023 → Feb 2026
- 6Presidio Petroleum LLCMar 2026 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 547596-99 | Drill | Patina Oil & Gas Corporation | Jun 29, 2004 | Jun 29, 2004 | Jul 7, 2004 | 13,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 20, 2004 | Hefley G-14-204651 | Buffalo Wallow (Granite Wash) | Presidio Petroleum LLC | Producing | 11,865 |
Formation tops
As filed on W-2/G-1. Subsea from 2,631 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| OswegoOSWEGO LM | 10,710 | -8,079 |
| Granite WashGRANITE WASH A1 | 11,065 | -8,434 |
| Granite WashGRANITE WASH A | 11,155 | -8,524 |
| Granite WashGRANITE WASH B | 11,275 | -8,644 |
| Granite WashGRANITE WASH C | 11,550 | -8,919 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,025 | 11,225 | Perforated |
| 11,329 | 11,442 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 3,222 | 11 | 1,080 S |
| 4.5 | 11,865 | 7.875 | 450 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Feb 17, 2005 | Nov 8, 2004 | Yes |
| 00 | Dec 14, 2004 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Apr 17, 2008. Density, Neutron. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| Neutron/Density PorosityCHI PROCESSED LOGSpans Oswego, Granite Wash | TIFF | 10,001 to 11,800 | Apr 17, 2008run Jul 30, 2004 | — |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-211-33019 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-211-33019 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/21133019, documented in the API reference.