WELL · 42-285-34129 · DISTRICT 2
Mammoth A #1H
Lavaca County · Eagleville (Eagle Ford-2) field · Producing · Horizontal
Mammoth A #1H (API 42-285-34129) is a horizontal well in Lavaca County operated by FW Eagle Ford I LLC, completed June 11, 2020 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued December 2, 2019, permitted to 14,500 ft.
It was permitted by Penn Virginia Oil & Gas, L.P. and has since transferred to FW Eagle Ford I LLC on the wellbore schedule.
Completion filings report 7 formation tops, including Catahoula, Frio, Vicksburg, Yegua.
Its lease has reported 195K barrels of oil and 264K mcf of gas since June 2020, last reporting in July 2026.
Operator of record
Permitted by Penn Virginia Oil & Gas, L.P.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jan 15, 2026 · 46 permits on file · (800) 461-6054
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | FW Eagle Ford I LLC |
| Production reports | FW Eagle Ford I, LLCthrough Apr 2026 |
| Latest permit | Penn Virginia Oil & Gas, L.P.Dec 2, 2019 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 14,500
- total depth, ft
- 2
- permits on file
- Dec 2, 2019
- last permit issued
- Jun 11, 2020
- completed
- 195K
- cumulative oil, bbl
- 264K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2020 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 11, 2020
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
29.549361, -97.162430
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Lavaca 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 |
|---|---|---|---|---|---|---|
| Mammoth A O-2-12010 | Eagleville (Eagle Ford-2) | FW Eagle Ford I, LLC | 1 | 195K | 264K | Jun 2020 – Jul 2026 |
Oil, barrels lease total
Last 12 months 12,008 · prior 12 14,866(-19%)
Gas, mcf lease total
Last 12 months 12,337 · prior 12 27,390(-55%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Penn Virginia Oil & Gas, L.P.Jun 2020 → Nov 2022
- 2Rocc Oil & Gas, L.P.Dec 2022 → Dec 2023
- 3Baytex Energy USA, Inc.Jan 2024 → Dec 2025
- 4FW Eagle Ford I, LLCJan 2026 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 859439-98 | Drill | Penn Virginia Oil & Gas, L.P. | Jul 20, 2020 | Dec 2, 2019 | Feb 5, 2020 | 14,500 |
| 859439-99 | Drill | Penn Virginia Oil & Gas, L.P. | Nov 26, 2019 | Dec 2, 2019 | Feb 4, 2020 | 14,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-12010 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 426 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,622 | 16,861 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,731 | 17.5 | 974 S |
| 8.625 | 8,479 | 10.375 | 1,377 S |
| 5.5 | 16,990 | 7.875 | 1,550 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 | Aug 10, 2022 | Jul 22, 2022 | Yes |
| 00 | Sep 21, 2020 | Sep 8, 2020 | Yes |
| 00 | Aug 6, 2020 | Jul 17, 2020 | 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 42-285-34129 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-285-34129 → 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.
Mammoth B42-285-34130
0.0 KM · Penn Virginia Oil & Gas, L.P. · Section with this well →
| Catahoula | 300 | 126 |
| Frio | 500 | -74 |
| Vicksburg | 600 | -174 |
| Yegua | 1,200 | -774 |
| Wilcox | 4,070 | -3,644 |
| Eagle Ford | 11,215 | -10,789 |
| Edwards | — |
Kyber A42-285-34204
0.3 KM · Penn Virginia Oil & Gas, L.P. · Section with this well →
| Catahoula | 300 | 118 |
| Frio | 500 | -82 |
| Vicksburg | 600 | -182 |
| Yegua | 1,200 | -782 |
| Wilcox | 4,070 | -3,652 |
| Eagle Ford | 11,234 | -10,816 |
| Edwards | — |
Kyber B42-285-34205
0.3 KM · Penn Virginia Oil & Gas, L.P. · Section with this well →
| Catahoula | 300 | 118 |
| Frio | 500 | -82 |
| Vicksburg | 600 | -182 |
| Yegua | 1,200 | -782 |
| Wilcox | 4,070 | -3,652 |
| Eagle Ford | 11,347 | -10,929 |
| Edwards | — |
Kyber C42-285-34206
0.3 KM · Penn Virginia Oil & Gas, L.P. · Section with this well →
| Catahoula | 300 | 118 |
| Frio | 500 | -82 |
| Vicksburg | 600 | -182 |
| Yegua | 1,200 | -782 |
| Wilcox | 4,070 | -3,652 |
| Eagle Ford | 11,244 | -10,826 |
| Edwards | — |
Kyber D42-285-34207
0.3 KM · Penn Virginia Oil & Gas, L.P. · Section with this well →
| Catahoula | 300 | 117 |
| Frio | 500 | -83 |
| Vicksburg | 600 | -183 |
| Yegua | 1,200 | -783 |
| Wilcox | 4,070 | -3,653 |
| Eagle Ford | 11,190 | -10,773 |
| Edwards | — |
Moose Hunter42-285-34138
0.6 KM · Penn Virginia Oil & Gas, L.P. · Section with this well →
| Vicksburg | 100 | 329 |
| Yegua | 1,450 | -1,021 |
| Wilcox | 4,100 | -3,671 |
| Eagle Ford | 11,269 | -10,840 |
| Catahoula | — | |
| Edwards | — | |
| Frio | — |
Moose Hunter42-285-34139
0.6 KM · Penn Virginia Oil & Gas, L.P. · Section with this well →
| Vicksburg | 100 | 329 |
| Yegua | 1,450 | -1,021 |
| Wilcox | 4,100 | -3,671 |
| Eagle Ford | 11,138 | -10,709 |
| Catahoula | — | |
| Frio | — | |
| Edwards | — |
Lott Unit42-285-34117
1.3 KM · Penn Virginia Oil & Gas, L.P. · Section with this well →
| Vicksburg | 100 | 263 |
| Yegua | 1,450 | -1,087 |
| Wilcox | 4,100 | -3,737 |
| Eagle Ford | 11,379 | -11,016 |
| Frio | — | |
| Catahoula | — | |
| Edwards | — |
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/28534129, documented in the API reference.