TEXAS · WELLS · SUTTON COUNTY · FIELDS 20 LEASE · API 42-435-35891 · DISTRICT 6E
Fields 20 #12
Sutton County · Sawyer (Canyon) field · Producing · Vertical
- Fields on the latest permit · any of 3
- Fawcett (Wolfcamp) · Sawyer (Canyon) · Sonora (Canyon Upper)
- Not one formation; the well must be completed in one of them, and no target formation is stated.
Fields 20 #12 (API 42-435-35891) is a well in Sutton County operated by Upp Operating LLC, completed June 15, 2002 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued May 16, 2002, permitted to 6,083 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 3 formation tops, including Base Cretaceous (marker), Wolfcamp, Canyon.
Its lease has reported 256 barrels of oil and 182K mcf of gas since June 2002, last reporting volume in April 2026.
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, IncMay 16, 2002 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,083
- total depth, ft
- 2
- permits on file
- May 16, 2002
- last permit issued
- Jun 15, 2002
- completed
- 256
- cumulative oil, bbl
- 182K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2002 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 15, 2002
- 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 |
|---|---|---|---|---|---|---|
| Fields 20 G-9-192854 | Sawyer (Canyon) | Upp Operating, LLC | 1 | 256 | 182K | Jun 2002 – Apr 2026 |
Gas, mcf lease total
Last 12 months 837 · prior 12 2,138(-61%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Dominion Oklahoma Texas E&P, IncJun 2002 → Dec 2007
- 2Highmount Expl & Prod Texas LLCJan 2008 → Sep 2014
- 3Enervest Operating, L.L.C.Oct 2014 → Mar 2019
- 4Upp Operating, LLCApr 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 520073-98 | Drill | Dominion Oklahoma Texas E&P, Inc | May 24, 2002 | May 16, 2002 | — | 6,050 |
| 520073-99 | Drill | Dominion Oklahoma Texas E&P, Inc | May 16, 2002 | May 16, 2002 | May 30, 2002 | 6,050 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 15, 2002 | Fields 20 G-9-192854 | Sawyer (Canyon) | Upp Operating LLC | Producing | 6,083 |
Formation tops
As filed on W-2/G-1. Subsea from 2,156 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Base Cretaceous (marker)BASE CRETACEOUS | 730 | 1,426 |
| Wolfcamp | 2,610 | -454 |
| Canyon | 4,958 | -2,802 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,740 | 5,826 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,188 | 11 | 240 S |
| 4.5 | 6,030 | 7.875 | 390 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 | Mar 13, 2003 | Jan 13, 2003 | Yes |
| 00 | Feb 14, 2003 | — | — |
Well logs
The RRC's map lists this well among those with logs online. Its monthly inventories loaded here, which start in July 2006, list none for it, so none are itemized.
Open the RRC's log search for this well ↗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 42-435-35891 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-435-35891 → 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/43535891, documented in the API reference.