TEXAS · WELLS · SCHLEICHER COUNTY · JEFFERS 28A LEASE · API 42-413-32454 · DISTRICT 6E
Jeffers 28A #4
Schleicher County · Sawyer (Canyon) field · Producing · Vertical
Jeffers 28a #4 (API 42-413-32454) is a well in Schleicher County operated by Upp Operating LLC, completed June 19, 2007 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued April 16, 2007, permitted to 8,452 ft.
It was permitted by Dominion Oklahoma Texas E&P, Inc and has since transferred to Upp Operating LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Base Cretaceous (marker), Wolfcamp, Canyon, Strawn.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Dominion Oklahoma Texas E&P, Inc; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Mar 6, 2026
- Permits on file
- 33
- Phone
- (713) 495-5300
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Upp Operating LLC |
| Production reports | Upp Operating, LLCthrough Apr 2026 |
| Latest permit | Dominion Oklahoma Texas E&P, IncApr 16, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,452
- total depth, ft
- 1
- permits on file
- Apr 16, 2007
- last permit issued
- Jun 19, 2007
- completed
- 0
- cumulative oil, bbl
- 496K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2007 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 19, 2007
- 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 |
|---|---|---|---|---|---|---|
| Jeffers 28A G-9-236281 | Sawyer (Canyon) | Upp Operating, LLC | 1 | 0 | 496K | Jun 2007 – Jul 2026 |
Gas, mcf lease total
Last 12 months 5,465 · prior 12 5,360(+2%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Highmount Expl & Prod Texas LLCJun 2007 → Sep 2014
- 2Enervest Operating, L.L.C.Oct 2014 → Mar 2019
- 3Upp Operating, LLCApr 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 636588-99 | Drill | Dominion Oklahoma Texas E&P, Inc | Apr 5, 2007 | Apr 16, 2007 | Jun 2, 2007 | 8,550 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 19, 2007 | Jeffers 28A G-9-236281 | Sawyer (Canyon) | Upp Operating LLC | Producing | 8,452 |
Formation tops
As filed on W-2/G-1. Subsea from 2,265 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Base Cretaceous (marker)BASE CRETACEOUS | 957 | 1,308 |
| Wolfcamp | 4,451 | -2,186 |
| Canyon | 6,777 | -4,512 |
| Strawn | 8,162 | -5,897 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,324 | 8,000 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,187 | 11 | 502 S |
| 4.5 | 8,389 | 7.875 | 500 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 13, 2008 | Nov 14, 2007 | Yes |
| 00 | Jul 2, 2008 | — | — |
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 42-413-32454 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-413-32454 → 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/41332454, documented in the API reference.