TEXAS · WELLS · ROBERTS COUNTY · VOLLMERT "B" LEASE · API 42-393-31527 · DISTRICT 08
Vollmert B #4
Roberts County · Mendota NW. (Granite Wash) field · Producing · Vertical
Vollmert B #4 (API 42-393-31527) is a well in Roberts County operated by Unit Petroleum Company, completed April 11, 2006 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 3, 2002, permitted to 11,130 ft.
Completion filings report 4 formation tops, including B.Dolo., B. Dolomite, Granite Wash, Atoka.
No lease production has been reported under this well’s leases.
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 CompanyJun 3, 2002 |
- 11,130
- total depth, ft
- 1
- permits on file
- Jun 3, 2002
- last permit issued
- Apr 11, 2006
- completed
- 0
- cumulative oil, bbl
- 397K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2002 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 11, 2006
- 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 |
|---|---|---|---|---|---|---|
| Vollmert "B" G-14-190963 | Mendota, NW. (Granite Wash, SW.) | Unit Petroleum Company | 1 | 0 | 397K | Aug 2002 – Jul 2026 |
Gas, mcf lease total
Last 12 months 2,037 · prior 12 2,089(-2%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Unit Petroleum CompanySep 2002 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 519743-99 | Drill | Unit Petroleum Company | May 7, 2002 | Jun 3, 2002 | Jun 25, 2002 | 11,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 11, 2006 | Vollmert B G-14-190963 | Mendota NW. (Granite Wash) | Unit Petroleum Company | Producing | 11,130 |
Formation tops
As filed on W-2/G-1. Subsea from 2,489 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| B.dolo. | 4,152 | -1,663 |
| B. Dolomite | 4,152 | -1,663 |
| Granite Wash | 9,902 | -7,413 |
| Atoka | 10,605 | -8,116 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,946 | 9,976 | Perforated |
| 9,996 | 10,000 | Perforated |
| 10,175 | 10,188 | Perforated |
| 10,378 | 10,396 | Perforated |
| 10,614 | 10,638 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 3,217 | 12.25 | 674 S |
| 5.5 | 11,066 | 8.75 | 350 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 | Mar 7, 2009 | Nov 3, 2008 | — |
| 00 | Sep 28, 2006 | May 22, 2006 | — |
| 00 | Dec 3, 2002 | Nov 6, 2002 | — |
| 00 | Oct 29, 2002 | Sep 30, 2002 | Yes |
| 00 | Oct 15, 2002 | — | — |
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 42-393-31527 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-393-31527 → 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/39331527, documented in the API reference.