TEXAS · WELLS · SCHLEICHER COUNTY · API 42-413-32627 · DISTRICT 6E
Jeffers AR #10
Schleicher County · Sawyer (Strawn North) field · SWR-10-Well · Vertical
- Fields on the latest permit · any of 3
- Kelley (Ellenburger) · Sawyer (Canyon) · Sawyer (Strawn, North)
- Not one formation; the well must be completed in one of them, and no target formation is stated.
Jeffers AR #10 (API 42-413-32627) is a well in Schleicher County operated by Upp Operating LLC, completed July 8, 2010 and listed as swr-10-well on the RRC schedule, shut in June 1, 2026.
The RRC has issued one drilling permit, issued February 22, 2010, permitted to 8,503 ft.
It was permitted by Highmount Expl & Prod Texas LLC and has since transferred to Upp Operating LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Base Cretaceos, Base Cretaceous (marker), Wolfcamp, Canyon.
Its 2 leases have reported 616 barrels of oil and 77.9K mcf of gas since July 2010, last reporting volume in December 2025. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Highmount Expl & Prod Texas LLC; 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 Dec 2025 |
| Latest permit | Highmount Expl & Prod Texas LLCFeb 22, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,503
- total depth, ft
- 1
- permits on file
- Feb 22, 2010
- last permit issued
- Jul 8, 2010
- completed
- 616
- cumulative oil, bbl
- 77.9K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · JUL 2010 THROUGH DEC 2025
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 8, 2010
- Shut in
- Jun 1, 2026
- 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.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
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 AR G-9-260877 | Sawyer (Canyon) | Upp Operating, LLC | 1 | 616 | 77.9K | Jul 2010 – Dec 2025 |
| Jeffers AR G-9-260878 | Sawyer (Strawn, North) | Upp Operating, LLC | 1 | 0 | 0 | Jul 2010 – — |
Gas, mcf lease total
Last 12 months 1,902 · prior 12 3,201(-41%)
Wells named Jeffers AR
Upp Operating LLC's other wells filed under this lease name in Schleicher County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain of custody
Every operator that reported production on this well's lease, in order.
- 1Highmount Expl & Prod Texas LLCJul 2010 → Sep 2014
- 2Enervest Operating, L.L.C.Oct 2014 → Mar 2019
- 3Upp Operating, LLCApr 2019 → Dec 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 691536-99 | Drill | Highmount Expl & Prod Texas LLC | Feb 18, 2010 | Feb 22, 2010 | Apr 5, 2010 | 8,750 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jul 8, 2010 | Jeffers AR G-9-260878 | Sawyer (Strawn North) | Upp Operating LLC | SWR-10-Well · shut in Jul 1, 2010 | 8,503 |
| Jul 8, 2010 | Jeffers AR G-9-260877 | Sawyer (Canyon) | Upp Operating LLC | Producing · shut in Jun 1, 2026 | 8,503 |
Formation tops
As filed on W-2/G-1. Subsea from 2,308 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Base Cretaceos | 1,113 | 1,195 |
| Base Cretaceous (marker)BASE CRETACEOUS | 1,113 | 1,195 |
| Wolfcamp | 4,502 | -2,194 |
| Canyon | 7,351 | -5,043 |
| Strawn | 8,108 | -5,800 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,314 | 8,034 | Perforated |
| 8,114 | 8,198 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,110 | 11 | 350 S |
| 4.5 | 8,364 | 7.875 | 300 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 | Oct 27, 2011 | Feb 11, 2011 | Yes |
| 00 | Oct 27, 2011 | Feb 11, 2010 | — |
| 00 | Sep 27, 2011 | — | — |
Well logs
2 logs loaded from the RRC's log index, the latest received Apr 16, 2013. Density, Neutron, Resistivity. 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 POROSITYSpans Base Cretaceos, Base Cretaceous (marker), Wolfcamp, Canyon, Strawn | TIFF | 200 to 8,470 | Apr 16, 2013run Apr 11, 2010 | 1.77 |
| RESISTIVITYSpans Base Cretaceos, Base Cretaceous (marker), Wolfcamp, Canyon, Strawn | 2 TIFF | 1,108 to 8,470 | Apr 16, 2013run Apr 11, 2010 | 4.92 + 1.57 |
"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 42-413-32627 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-413-32627 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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/41332627, documented in the API reference.