WELL · 42-211-33942 · DISTRICT 10
Vollmert C #5
Hemphill County · Mendota N. (Morrow Upper) field · Vertical
Vollmert C #5 (API 42-211-33942) is a well in Hemphill County operated by Unit Petroleum Company, completed September 10, 2007.
The RRC has issued 4 drilling permits between 2007 and 2015, permitted to 11,330 ft.
Completion filings report 10 formation tops, including Base Red Beds, Brown Dolomite, Douglas, Duglas.
Its 4 leases have reported 17.9K barrels of oil and 1.09M mcf of gas since September 2007, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Tulsa, OK
- P-5 status
- Active (A)
- P-5 last filed
- Jan 13, 2025
- Permits on file
- 1,100
- Phone
- (918) 493-7700
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Unit Petroleum Company |
| Production reports | Unit Petroleum Companythrough Apr 2026 |
| Latest permit | Unit Petroleum CompanyNov 17, 2015 |
- 11,330
- total depth, ft
- 4
- permits on file
- Nov 17, 2015
- last permit issued
- Sep 10, 2007
- completed
- 17.9K
- cumulative oil, bbl
- 1.09M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2007 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Sep 10, 2007
- 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 4 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Vollmert "C" G-14-250845 | Mendota, NW. (Granite Wash, SW.) | Unit Petroleum Company | 1 | 0 | 957K | Oct 2007 – Jul 2026 |
| Vollmert 'C' G-14-269234 | Mendota, N. (Morrow, Upper) | Unit Petroleum Company | 1 | 0 | 16K | Oct 2011 – Jul 2026 |
| Vollmert 'C' O-14-9507 | Mendota, NW. (Douglas, Lo.) | Unit Petroleum Company | 1 | 17.9K | 115K | Nov 2016 – Jul 2026 |
| Vollmert "C" G-14-250770 | Mendota, N. (Morrow, Upper) | Unit Petroleum Company | 1 | 0 | 4.02K | Sep 2007 – Oct 2007 |
Oil, barrels lease total
Last 12 months 830 · prior 12 534(+55%)
Gas, mcf lease total
Last 12 months 4,750 · prior 12 3,227(+47%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Unit Petroleum CompanySep 2007 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 811936-99 | Recompletion | Unit Petroleum Company | Nov 12, 2015 | Nov 17, 2015 | Oct 24, 2016 | 11,330 |
| 740794-99 | Recompletion | Unit Petroleum Company | May 15, 2012 | May 30, 2012 | Sep 12, 2011 | 11,250 |
| 684955-99 | Recompletion | Unit Petroleum Company | Sep 10, 2009 | Sep 10, 2009 | Jul 8, 2007 | 11,250 |
| 641440-99 | Drill | Unit Petroleum Company | Jun 26, 2007 | Jul 10, 2007 | Jul 7, 2007 | 11,250 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-14-250770 | — | — | — | — |
| — | — G-14-250845 | — | — | — | — |
| — | — G-14-269234 | — | — | — | — |
| — | — O-14-9507 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,717 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Base Red Beds | 4,014 | -1,297 |
| Brown Dolomite | 4,014 | -1,297 |
| Brown DolomiteTOP BROWN DOLOMITE | 4,014 | -1,297 |
| Douglas | 6,951 | -4,234 |
| Duglas | 6,951 | -4,234 |
| Heebner | 6,951 | -4,234 |
| Kansas City | 8,140 | -5,423 |
| Marmaton | 9,086 | -6,369 |
| Granite Wash | 9,546 | -6,829 |
| Novi | 10,806 | -8,089 |
| Morrow | 11,015 | -8,298 |
| MorrowMORROW SHALE | 11,015 | -8,298 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,325 | 7,339 | Perforated |
| 10,077 | 10,708 | Perforated |
| 11,169 | 11,183 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,870 | 12.25 | 1,250 S |
| 5.5 | 11,330 | 7.875 | 340 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 26, 2021 | Jul 15, 2021 | — |
| 00 | Mar 30, 2017 | Dec 15, 2016 | — |
| 00 | Aug 13, 2013 | Jun 13, 2012 | — |
| 00 | Nov 5, 2009 | Feb 28, 2008 | Yes |
| 00 | Oct 21, 2009 | Nov 19, 2007 | Yes |
| 00 | Sep 15, 2009 | — | — |
| 00 | Sep 9, 2009 | — | — |
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 42-211-33942 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-211-33942 → 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/21133942, documented in the API reference.