TEXAS · WELLS · HILL COUNTY · MASTIN NORTH UNIT LEASE · API 42-217-30380 · DISTRICT 7C
Mastin North Unit #1
Hill County · Newark East (Barnett Shale) field · Producing · Horizontal
Mastin North Unit #1 (API 42-217-30380) is a horizontal well in Hill County operated by Formentera Operations LLC, completed November 15, 2018 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued November 2, 2005, permitted to 8,056 ft.
It was permitted by Devon Energy Production CO, L.P. and has since transferred to Formentera Operations LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Big Saline, Marble Falls, Barnett.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Devon Energy Production Co, L.P.; the EWA schedule now lists a different operator.
- Based in
- Austin, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 11, 2026
- Permits on file
- 90
- Phone
- (512) 514-5779
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 LLCNov 2, 2005 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,056
- total depth, ft
- 2
- permits on file
- Nov 2, 2005
- last permit issued
- Nov 15, 2018
- completed
- 0
- cumulative oil, bbl
- 892K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2006 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 15, 2018
- Shut in
- —
- 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 |
|---|---|---|---|---|---|---|
| Mastin North Unit G-13-224538 | Newark, East (Barnett Shale) | Formentera Operations LLC | 1 | 0 | 892K | Sep 2006 – Jul 2026 |
Gas, mcf lease total
Last 12 months 24,487 · prior 12 22,330(+10%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Devon Energy Production Co, L.P.Sep 2006 → 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 |
|---|---|---|---|---|---|---|
| 608840-98 | Drill | Devon Energy Production Co, L.P. | Jan 17, 2007 | Nov 2, 2005 | Dec 14, 2005 | 8,900 |
| 608840-99 | Drill | Chief Oil & Gas LLC | Nov 2, 2005 | Nov 2, 2005 | Dec 14, 2005 | 8,900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 15, 2018 | Mastin North Unit G-13-224538 | Newark East (Barnett Shale) | Formentera Operations LLC | Producing | 8,056 |
Formation tops
As filed on W-2/G-1. Subsea from 741 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Big Saline | 7,372 | -6,631 |
| Marble Falls | 7,854 | -7,113 |
| BarnettBARNETT SHALE | 8,091 | -7,350 |
| BarnettBARNETT SHALE | — | — |
| Big Saline | — | — |
| Marble Falls | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,255 | 8,445 | Perforated |
| 8,255 | 10,300 | Perforated |
| 8,920 | 9,250 | Perforated |
| 9,450 | 9,555 | Perforated |
| 10,181 | 10,300 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,778 | 12.25 | 600 S |
| 5.5 | 10,419 | 8.75 | 870 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 | Sep 3, 2020 | Aug 10, 2020 | — |
| 00 | Apr 16, 2007 | Oct 30, 2006 | Yes |
| 00 | Feb 14, 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 42-217-30380 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-217-30380 → 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/21730380, documented in the API reference.