WELL · 42-163-34180 · DISTRICT 1
McWilliams-Sot-Sartain EF #1H
Frio County · Briscoe Ranch (Eagleford) field · Producing · Horizontal
Mcwilliams-Sot-Sartain EF #1H (API 42-163-34180) is a horizontal well in Frio County operated by Trailblazer Energy Resources LLC, completed July 7, 2019 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued February 26, 2019, permitted to 7,500 ft.
It was permitted by Virtex Operating Company, Inc. and has since transferred to Trailblazer Energy Resources LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Queen City, Navarro, Escondido, Olmos.
Its lease has reported 109K barrels of oil and 454K mcf of gas since April 2019, last reporting in July 2026.
Operator of record
Trailblazer Energy Resources LLC
Permitted by Virtex Operating Company, Inc.; the EWA schedule now lists a different operator.
Tulsa, OK · P-5 Y, filed Aug 4, 2025 · 30 permits on file · (866) 598-1407
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Trailblazer Energy Resources LLC |
| Production reports | Trailblazer Energy Resources,llcthrough Apr 2026 |
| Latest permit | Virtex Operating Company, Inc.Feb 26, 2019 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,500
- total depth, ft
- 1
- permits on file
- Feb 26, 2019
- last permit issued
- Jul 7, 2019
- completed
- 109K
- cumulative oil, bbl
- 454K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2019 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 7, 2019
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
28.806428, -99.266386
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Frio County.
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 |
|---|---|---|---|---|---|---|
| McWilliams-Sot-Sartain EF O-1-19731 | Briscoe Ranch (Eagleford) | Trailblazer Energy Resources,llc | 1 | 109K | 454K | Apr 2019 – Jul 2026 |
Oil, barrels lease total
Last 12 months 5,959 · prior 12 6,840(-13%)
Gas, mcf lease total
Last 12 months 32,993 · prior 12 25,605(+29%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Virtex Operating Company, Inc.Jul 2019 → Aug 2023
- 2Trailblazer Energy Resources,llcSep 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 850234-99 | Drill | Virtex Operating Company, Inc. | Feb 20, 2019 | Feb 26, 2019 | Mar 9, 2019 | 7,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-19731 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 524 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 2,049 | -1,525 |
| Navarro | 2,684 | -2,160 |
| Escondido | 3,057 | -2,533 |
| Olmos | 4,098 | -3,574 |
| Anacacho | 5,046 | -4,522 |
| Austin ChalkAUSTIN CHALK - H2S | 5,425 | -4,901 |
| Eagle FordEAGLE FORD - H2S | 5,831 | -5,307 |
| BudaBUDA - H2S | — | — |
| GeorgetownGEORGETOWN - H2S | — | — |
| Pearsall | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,429 | 13,910 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,813 | 12.25 | 762 S |
| 5.5 | 14,063 | 8.75 | 3,040 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 | Oct 22, 2019 | Jul 11, 2019 | Yes |
| 00 | Jun 24, 2019 | May 21, 2019 | Yes |
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 42-163-34180 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-34180 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
McWilliams-O'Neill EF42-163-34181
0.0 KM · Virtex Operating Company, Inc. · Section with this well →
| Queen City | 2,020 | -1,496 |
| Navarro | 2,648 | -2,124 |
| Escondido | 3,021 | -2,497 |
| Olmos | 4,019 | -3,495 |
| Anacacho | 5,050 | -4,526 |
| Austin Chalk | 5,416 | -4,892 |
| Eagle Ford | 5,768 | -5,244 |
| Georgetown | — |
10 TOPS · FIRST 8
Burleson42-163-33641
3.4 KM · Virtex Operating Company, Inc. · Section with this well →
| Queen City | 2,500 | -1,985 |
| Navarro | 2,934 | -2,419 |
| Midway | 2,934 | -2,419 |
| Escondido | 3,265 | -2,750 |
| Olmos | 4,095 | -3,580 |
| San Miguel | 4,529 | -4,014 |
| Anacacho | 5,095 | -4,580 |
| Eagle Ford | 5,472 | -4,957 |
16 TOPS · FIRST 8
Hancock A42-163-34360
4.6 KM · Rosewood Resources, Inc. · Section with this well →
| Escondido | 3,565 | -3,004 |
| Olmos | 4,582 | -4,021 |
| Anacacho | 5,615 | -5,054 |
| Austin Chalk | 6,048 | -5,487 |
| Eagle Ford | 6,516 | -5,955 |
| Queen City | — | |
| Buda | — | |
| Georgetown | — |
10 TOPS · FIRST 8
Hancock A42-163-34361
4.6 KM · Rosewood Resources, Inc. · Section with this well →
| Escondido | 3,560 | -2,999 |
| Olmos | 4,590 | -4,029 |
| Anacacho | 5,608 | -5,047 |
| Austin Chalk | 6,038 | -5,477 |
| Eagle Ford | 6,506 | -5,945 |
| Pearsall | — | |
| Georgetown | — | |
| Buda | — |
10 TOPS · FIRST 8
Lothringer42-163-34135
4.7 KM · Virtex Operating Company, Inc. · Section with this well →
| Queen City | 1,950 | -1,415 |
| Navarro | 2,884 | -2,349 |
| Escondido | 3,143 | -2,608 |
| Olmos | 4,161 | -3,626 |
| Anacacho | 5,159 | -4,624 |
| Austin Chalk | 5,523 | -4,988 |
| Buda | — | |
| Eagle Ford | — |
10 TOPS · FIRST 8
Calvert Ranch Fro42-163-34097
4.9 KM · Exco Operating Company, LP · Section with this well →
| Escondido | 3,218 | -2,673 |
| Olmos | 4,212 | -3,667 |
| Anacacho | 5,335 | -4,790 |
| Austin Chalk | 5,595 | -5,050 |
| Eagle Ford | 6,071 | -5,526 |
| Buda | — | |
| Pearsall | — | |
| Navarro | — |
10 TOPS · FIRST 8
Boll Fro42-163-34105
4.9 KM · Exco Operating Company, LP · Section with this well →
| Escondido | 3,670 | -3,098 |
| Olmos | 4,593 | -4,021 |
| Anacacho | 5,710 | -5,138 |
| Austin Chalk | 6,033 | -5,461 |
| Eagle Ford | 6,489 | -5,917 |
| Queen City | — | |
| Buda | — | |
| Georgetown | — |
10 TOPS · FIRST 8
Lothringer42-163-34162
5.0 KM · Virtex Operating Company, Inc. · Section with this well →
| Queen City | 1,889 | -1,351 |
| Navarro | 3,503 | -2,965 |
| Escondido | 3,978 | -3,440 |
| Olmos | 4,122 | -3,584 |
| Anacacho | 4,910 | -4,372 |
| Austin Chalk | 5,173 | -4,635 |
| Eagle Ford | 6,090 | -5,552 |
| Georgetown | — |
10 TOPS · FIRST 8
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/16334180, documented in the API reference.