WELL · 42-163-33806 · DISTRICT 1
Marrs McLean #1H
Frio County · Briscoe Ranch (Eagleford) field · Horizontal
Marrs Mclean #1H (API 42-163-33806) is a horizontal well in Frio County operated by Javelin Energy Partners Mgmt LLC, completed April 23, 2014.
The RRC has issued one drilling permit (amended once), issued February 5, 2014, permitted to 8,200 ft.
It was permitted by Cabot Oil & Gas Corporation and has since transferred to Javelin Energy Partners Mgmt LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Queen City, Escondido, Navarro, Olmos.
Its 2 leases have reported 635K barrels of oil and 688K mcf of gas since February 2012, last reporting in July 2026. The leases carry 8 wells, so these are lease totals, not this well alone.
Operator of record
Javelin Energy Partners Mgmt LLC
Permitted by Cabot Oil & Gas Corporation; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jan 4, 2026 · 233 permits on file · (888) 973-7780
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Javelin Energy Partners Mgmt LLC |
| Production reports | Javelin Energy Partners Mgmt LLCthrough Mar 2026 |
| Latest permit | Cabot Oil & Gas CorporationFeb 5, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,200
- total depth, ft
- 2
- permits on file
- Feb 5, 2014
- last permit issued
- Apr 23, 2014
- completed
- 635K
- cumulative oil, bbl
- 688K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2012 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 23, 2014
- 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 2 leases this well is completed on; they carry 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Marrs McLean O-1-15864 | Briscoe Ranch (Eagleford) | Javelin Energy Partners Mgmt LLC | 7 | 574K | 533K | Feb 2012 – Jul 2026 |
| Thoroughbred 1H O-1-18528 | Briscoe Ranch (Eagleford) | Javelin Energy Partners Mgmt LLC | 1 | 60.8K | 155K | Apr 2014 – Jul 2026 |
Oil, barrels lease total
Last 12 months 5,625 · prior 12 1,894(+197%)
Gas, mcf lease total
Last 12 months 2,442 · prior 12 2,335(+5%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1EF Energy, L.L.C.Mar 2012 → Sep 2014
- 2Cabot Oil & Gas CorporationOct 2014 → Jan 2018
- 3Venado Operating Company LLCFeb 2018 → Mar 2022
- 4Javelin Energy Partners Mgmt LLCApr 2022 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 777683-98 | Drill | Cabot Oil & Gas Corporation | Apr 22, 2015 | Feb 5, 2014 | Mar 6, 2014 | 8,200 |
| 777683-99 | Drill | EF Energy, L.L.C. | Jan 20, 2014 | Feb 5, 2014 | — | 8,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-15864 | — | — | — | — |
| — | — O-1-18528 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 422 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 700 | -278 |
| Escondido | 5,165 | -4,743 |
| Navarro | 5,165 | -4,743 |
| Olmos | 5,980 | -5,558 |
| Anacacho | 7,230 | -6,808 |
| Austin ChalkAUSTIN CHALK - H2S | 7,330 | -6,908 |
| Eagle FordEAGLE FORD - H2S | 7,953 | -7,531 |
| BudaBUDA - H2S | — | — |
| GeorgetownGEORGETOWN - H2S | — | — |
| Pearsall | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,459 | 14,822 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 80 | 20 | 35 S |
| 9.625 | 3,488 | 12.25 | 1,000 S |
| 5.5 | 15,009 | 8.75 | 1,855 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 | Nov 17, 2015 | Apr 30, 2015 | — |
| 00 | Aug 13, 2014 | Jun 4, 2014 | 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 42-163-33806 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-163-33806 → 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/16333806, documented in the API reference.