WELL · 42-439-31571 · DISTRICT 9
McMahon #1H
Tarrant County · Newark East (Barnett Shale) field · Producing · Horizontal
Mcmahon #1H (API 42-439-31571) is a horizontal well in Tarrant County operated by Formentera Operations LLC, completed June 14, 2007 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued March 30, 2006, permitted to 8,900 ft.
It was permitted by Chief Oil & Gas LLC ** and has since transferred to Formentera Operations LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Marble Falls, Barnett.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Chief Oil & Gas LLC **; the EWA schedule now lists a different operator.
Austin, TX · P-5 Y, filed May 4, 2026 · 90 permits on file · (844) 509-5768
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Formentera Operations LLC |
| Production reports | Formentera Operations LLCthrough Apr 2026 |
| Latest permit | Chief Oil & Gas LLC **Mar 30, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,900
- total depth, ft
- 1
- permits on file
- Mar 30, 2006
- last permit issued
- Jun 14, 2007
- completed
- 0
- cumulative oil, bbl
- 1.58M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2007 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 14, 2007
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
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 |
|---|---|---|---|---|---|---|
| McMahon G-13-229652 | Newark, East (Barnett Shale) | Formentera Operations LLC | 1 | 0 | 1.58M | Jun 2007 – Jul 2026 |
Gas, mcf lease total
Last 12 months 9,813 · prior 12 19,927(-51%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Devon Energy Production Co, L.P.Jun 2007 → Apr 2018
- 2FDL Operating, LLCMay 2018 → Dec 2021
- 3Venado Operating Company LLCJan 2022 → Mar 2022
- 4Javelin Energy Partners Mgmt LLCApr 2022 → Nov 2025
- 5Formentera Operations LLCDec 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 616735-99 | Drill | Chief Oil & Gas LLC ** | Mar 30, 2006 | Mar 30, 2006 | May 3, 2006 | 8,900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-13-229652 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 732 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Marble Falls | 6,286 | -5,554 |
| BarnettUPPER BARNETT SHALE | 6,382 | -5,650 |
| BarnettLOWER BARNETT SHALE | 6,449 | -5,717 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,905 | 6,909 | Perforated |
| 7,335 | 7,339 | Perforated |
| 7,765 | 7,769 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,005 | 12.25 | 540 S |
| 5.5 | 8,340 | 7.875 | 580 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 8, 2007 | Aug 6, 2007 | Yes |
| 00 | Sep 26, 2007 | — | — |
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 42-439-31571 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-439-31571 → 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/43931571, documented in the API reference.