WELL · 42-227-34235 · DISTRICT 8
Umphress C. F. et AL #1
Howard County · Sand Springs (Fusselman) field · Vertical
Umphress C. F. ET AL #1 (API 42-227-34235) is a plugged well in Howard County, plugged July 21, 2011, last operated by Rrig Exploration LLC.
The RRC has issued 2 drilling permits between 1987 and 2009, permitted to 9,500 ft.
It was permitted by Cimarex Energy CO. Of Colorado and has since transferred to Rrig Exploration LLC on the wellbore schedule.
Completion filings report 6 formation tops, including Yates, San Andres, Wolfcamp, Strawn.
Its 2 leases have reported 60.9K barrels of oil and 1.73M mcf of gas since January 1993, last reporting in July 2026. The leases carry 6 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Cimarex Energy Co. of Colorado; the EWA schedule now lists a different operator.
Fort Worth, TX · P-5 Y, filed Jul 4, 2026 · (817) 201-1558
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Rrig Exploration LLC |
| Production reports | Rrig Exploration, LLCthrough Mar 2019 |
| Latest permit | Cimarex Energy Co. of ColoradoMar 13, 2009 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,500
- total depth, ft
- 2
- permits on file
- Mar 13, 2009
- last permit issued
- Feb 22, 2009
- completed
- 60.9K
- cumulative oil, bbl
- 1.73M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 22, 2009
- Shut in
- —
- Plugged
- Jul 21, 2011
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 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Umphress,c. F. et AL O-10-39361 | Sand Springs (Fusselman) | Rrig Exploration, LLC | 2 | 18.7K | 148K | Feb 2009 – Jul 2026 |
| Umphress, C. F. et AL O-10-31873 | Mer-Max (Miss) | Merit Energy Company | 4 | 42.1K | 1.58M | Jan 1993 – May 2013 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Meridian Oil Inc.Jan 1993 → Jul 1996
- 2Burlington Resources Oil&gas Co.Aug 1996 → Apr 1997
- 3Gruy Petroleum Management Co.May 1997 → Apr 2006
- 4Cimarex Energy Co. of ColoradoMay 2006 → Dec 2012
- 5Merit Energy CompanyJan 2013 → May 2017
- 6Rover Petroleum Operating, LLCJun 2017 → Feb 2019
- 7Rrig Exploration, LLCMar 2019 → Mar 2019
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 679359-99 | Recompletion | Cimarex Energy Co. of Colorado | Mar 11, 2009 | Mar 13, 2009 | Feb 11, 2009 | 9,500 |
| 339420-99 | Drill | Meridian Oil Inc. | Nov 30, 1987 | Nov 30, 1987 | Dec 1, 1987 | 9,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-31873 | — | — | — | — |
| — | — O-10-39361 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,487 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,460 | 1,027 |
| San Andres | 2,650 | -163 |
| Wolfcamp | 6,540 | -4,053 |
| StrawnSTRAWN LIME | 8,710 | -6,223 |
| Mississippian | 9,060 | -6,573 |
| Fusselman | 9,240 | -6,753 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,067 | 9,073 | Perforated |
| 9,067 | 9,132 | Perforated |
| 9,078 | 9,088 | Perforated |
| 9,126 | 9,132 | Perforated |
| 9,249 | 9,254 | Perforated |
| 9,249 | 9,265 | Perforated |
| 9,254 | 9,265 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 413 | 17.5 | 525 S |
| 8.625 | 3,233 | 12.25 | 1,850 S |
| 5.5 | 9,500 | 7.875 | 1,820 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 | Jul 30, 2009 | Mar 16, 2009 | Yes |
| 00 | Jun 30, 2009 | — | — |
| 00 | Aug 3, 1988 | Jun 8, 1988 | Yes |
| 00 | Jul 26, 1988 | — | — |
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 42-227-34235 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-227-34235 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). 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/22734235, documented in the API reference.