TEXAS · WELLS · ROBERTS COUNTY · API 42-393-32126 · DISTRICT 08
Mahler C #C 1
Roberts County · Mendota NW. (Granite Wash) field · Vertical
Mahler C #C 1 (API 42-393-32126) is a plugged well in Roberts County, plugged July 19, 2021, last operated by Unit Petroleum Company.
The RRC has issued one drilling permit, issued May 19, 2008, permitted to 10,100 ft.
Completion filings report 6 formation tops, including Brown Dolomite, Heebner, Douglas, Kansas City.
Its 2 leases have reported 22.2K barrels of oil and 269K mcf of gas since June 2008, with no volume in the three years through April 2026. The leases carry 3 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 Sep 2019 |
| Latest permit | Unit Petroleum CompanyMay 19, 2008 |
- 10,100
- total depth, ft
- 1
- permits on file
- May 19, 2008
- last permit issued
- Jun 25, 2015
- completed
- 22.2K
- cumulative oil, bbl
- 269K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2008 THROUGH Sep 2019
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 25, 2015
- Shut in
- —
- Plugged
- Jul 19, 2021
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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mahler "C" G-14-258230 | Mendota, NW. (Granite Wash) | Unit Petroleum Company | 1 | 6.06K | 83.2K | May 2010 – Sep 2019 |
| Mahler "C" O-14-7909 | Mendota, NW. (Granite Wash, SW.) | Unit Petroleum Company | 2 | 16.2K | 185K | Jun 2008 – May 2010 |
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.
- 1Unit Petroleum CompanyJun 2008 → Sep 2019
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 660810-99 | Drill | Unit Petroleum Company | Apr 30, 2008 | May 19, 2008 | May 21, 2008 | 10,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 25, 2015 | Mahler C G-14-258230 | Mendota NW. (Granite Wash) | Unit Petroleum Company | Plugged | — |
| Jun 27, 2008 | Mahler C O-14-7909 | Mendota NW. (Granite Wash SW.) | Unit Petroleum Company | Plugged | — |
| — | Mahler C O-14-7909 | Mendota NW. (Granite Wash SW.) | Unit Petroleum Company | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,723 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Brown Dolomite | 4,016 | -1,293 |
| Heebner | 6,700 | -3,977 |
| Douglas | 6,703 | -3,980 |
| Kansas City | 7,863 | -5,140 |
| Marmaton | 8,718 | -5,995 |
| Granite Wash | 9,102 | -6,379 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,313 | 9,320 | Perforated |
| 9,754 | 9,788 | Perforated |
| 9,808 | 9,812 | Perforated |
| 9,918 | 9,920 | Perforated |
| 10,021 | 10,054 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,827 | 12.25 | 1,035 S |
| 4.5 | 10,190 | 8.75 | 425 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 | Sep 22, 2015 | Jul 22, 2015 | — |
| 00 | Feb 11, 2011 | Jun 18, 2010 | — |
| 00 | Dec 9, 2010 | — | — |
| 00 | Jan 30, 2009 | Sep 8, 2008 | Yes |
| 00 | Jan 29, 2009 | — | — |
| 00 | Dec 4, 2008 | — | — |
Well logs
2 logs loaded from the RRC's log index, the latest received Jun 22, 2011. 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 Brown Dolomite, Heebner, Douglas, Kansas City, Marmaton, Granite Wash | TIFF | 6,300 to 10,094 | Jun 22, 2011run Jun 4, 2008 | 6.02 |
| RESISTIVITYSpans Brown Dolomite, Heebner, Douglas, Kansas City, Marmaton, Granite Wash | TIFF | 2,822 to 10,094 | Jun 22, 2011run Jun 4, 2008 | 7.37 |
"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 42-393-32126 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-393-32126 → 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/39332126, documented in the API reference.