WELL · 42-413-30711 · DISTRICT 7
Jeffers 28 #1
Schleicher County · John Rae (Penn) field · Vertical
Jeffers 28 #1 (API 42-413-30711) is a well in Schleicher County operated by Concho Resources Inc., completed August 11, 1978.
The RRC has issued one drilling permit, issued June 14, 1978, permitted to 8,250 ft.
It was permitted by Enserch Exploration, Inc and has since transferred to Concho Resources Inc. on the wellbore schedule.
Its 2 leases have reported 1.69K barrels of oil and 389K mcf of gas since January 1993, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Enserch Exploration, Inc; the EWA schedule now lists a different operator.
- Based in
- Oklahoma City, OK
- P-5 status
- Inactive (I)
- P-5 last filed
- Jul 21, 2003
- Permits on file
- 138
- Phone
- (432) 683-7443
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Concho Resources Inc. |
| Production reports | Upp Operating, LLCthrough Apr 2026 |
| Latest permit | Enserch Exploration, IncJun 14, 1978 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,250
- total depth, ft
- 1
- permits on file
- Jun 14, 1978
- last permit issued
- Aug 11, 1978
- completed
- 1.69K
- cumulative oil, bbl
- 389K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 11, 1978
- 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 2 leases this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Jeffers 28 G-9-163844 | Ozona, NE. (Canyon 7520) | Upp Operating, LLC | 1 | 0 | 305K | Jul 1997 – Jul 2026 |
| Jeffers "28" O-9-7581 | John Rae (Penn) | Concho Resources Inc. | 1 | 1.69K | 84.5K | Jan 1993 – Aug 2001 |
Gas, mcf lease total
Last 12 months 3,927 · prior 12 3,783(+4%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Parker & Parsley Development Co.Jan 1993 → Feb 1995
- 2Parker & Parsley Development L.PMar 1995 → May 1996
- 3Costilla Petroleum CorporationJun 1996 → Jan 1997
- 4Costilla Energy, Inc.Feb 1997 → Dec 1997
- 5Concho Resources Inc.Jan 1998 → Jun 2001
- 6Devon Energy Production Co, L.P.Aug 2001 → Jun 2002
- 7Merit Energy CompanyOct 2002 → Nov 2003
- 8Dominion Oklahoma Texas E&P, IncDec 2003 → Dec 2007
- 9Highmount Expl & Prod Texas LLCJan 2008 → Sep 2014
- 10Enervest Operating, L.L.C.Oct 2014 → Mar 2019
- 11Upp Operating, LLCApr 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 26401-99 | Drill | Enserch Exploration, Inc | Jun 14, 1978 | Jun 14, 1978 | Jun 25, 1978 | 8,250 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-9-163844 | — | — | — | — |
| — | — O-9-7581 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,444 | 8,144 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,552 | 11 | 550 S |
| 2.375 | 7,976 | — | — |
| 4.5 | 8,250 | 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 22, 1997 | Aug 6, 1997 | — |
| 00 | Aug 12, 1997 | — | — |
| 00 | Jan 12, 1984 | Sep 15, 1978 | — |
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 42-413-30711 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-413-30711 → 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/41330711, documented in the API reference.