TEXAS · WELLS · FRIO COUNTY · MARRS MCLEAN UNIT LEASE · API 42-163-33420 · DISTRICT 01
Marrs McLean Unit #5
Frio County · Doering Ranch (Georgetown) field · Temp Abandoned · Vertical
Marrs Mclean Unit #5 (API 42-163-33420) is a well in Frio County operated by Trailblazer Energy Resources LLC, completed October 26, 2010 and listed as temp abandoned on the RRC schedule, shut in June 1, 2024.
The RRC has issued one drilling permit, issued July 21, 2010, permitted to 6,730 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 6 formation tops, including Olmos, San Miguel, San Miquel, Austin Chalk.
Its lease has reported 4.52K barrels of oil and 581K mcf of gas since October 2010, last reporting volume in May 2024.
Operator of record
Trailblazer Energy Resources LLC
Permitted by Virtex Operating Company, Inc.; the EWA schedule now lists a different operator.
- Based in
- Tulsa, OK
- P-5 status
- Active (A)
- P-5 last filed
- Oct 16, 2025
- Permits on file
- 30
- Phone
- (918) 728-3020
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Trailblazer Energy Resources LLC |
| Production reports | Trailblazer Energy Resources,llcthrough Jul 2024 |
| Latest permit | Virtex Operating Company, Inc.Jul 21, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,730
- total depth, ft
- 1
- permits on file
- Jul 21, 2010
- last permit issued
- Oct 26, 2010
- completed
- 4.52K
- cumulative oil, bbl
- 581K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2010 THROUGH Jul 2024
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 26, 2010
- Shut in
- Jun 1, 2024
- 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 |
|---|---|---|---|---|---|---|
| Marrs McLean Unit G-1-260006 | Doering Ranch (Georgetown) | Trailblazer Energy Resources,llc | 1 | 4.52K | 581K | Oct 2010 – Jul 2024 |
Gas, mcf lease total
Last 12 months 0 · prior 12 35(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Virtex Operating Company, Inc.Nov 2010 → Aug 2023
- 2Trailblazer Energy Resources,llcSep 2023 → May 2024
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 699219-99 | Drill | Virtex Operating Company, Inc. | Jul 19, 2010 | Jul 21, 2010 | Jul 31, 2010 | 7,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 26, 2010 | Marrs McLean Unit G-1-260006 | Doering Ranch (Georgetown) | Trailblazer Energy Resources LLC | Temp Abandoned · shut in Jun 1, 2024 | 6,730 |
Formation tops
As filed on W-2/G-1. Subsea from 578 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Olmos | 4,142 | -3,564 |
| San Miguel | 4,636 | -4,058 |
| San Miquel | 4,636 | -4,058 |
| Austin Chalk | 5,559 | -4,981 |
| Eagle Ford | 6,118 | -5,540 |
| Buda | 6,231 | -5,653 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,239 | 6,292 | Perforated |
| 6,297 | 6,309 | Perforated |
| 6,474 | 6,484 | Perforated |
| 6,490 | 6,505 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.833 | 683 | 12.25 | 320 S |
| 4.5 | 6,656 | 7.875 | 845 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 | Aug 11, 2011 | Apr 26, 2011 | — |
| 00 | Jun 20, 2011 | Nov 9, 2010 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Aug 20, 2013. 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 |
|---|---|---|---|---|
| COMBINATION: RESISTIVITY/NEUTRON/DENSITY POROSITYSpans Olmos, San Miquel, San Miguel, Austin Chalk, Eagle Ford, Buda | TIFF | 685 to 6,725 | Aug 20, 2013run Aug 12, 2010 | 0.10 |
"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 42-163-33420 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-33420 → 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/16333420, documented in the API reference.