WELL · 42-285-34135 · DISTRICT 2
Mad King Unit #1H
Lavaca County · Eagleville (Eagle Ford-2) field · Horizontal
Mad King Unit #1H (API 42-285-34135) is a horizontal well in Lavaca County operated by Marathon Oil EF LLC, completed April 1, 2020.
The RRC has issued one drilling permit (amended once), issued December 31, 2019, permitted to 23,000 ft.
Completion filings report 7 formation tops, including Frio, Vicksburg, Yegua, Wilcox.
No lease production has been reported under this well’s leases.
Operator of record
Houston, TX · P-5 Y, filed Aug 4, 2025 · 3,191 permits on file · (800) 332-9449
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil EF LLC |
| Production reports | Marathon Oil EF LLCthrough Apr 2026 |
| Latest permit | Marathon Oil EF LLCDec 31, 2019 |
- 23,000
- total depth, ft
- 2
- permits on file
- Dec 31, 2019
- last permit issued
- Apr 1, 2020
- completed
- 0
- cumulative oil, bbl
- 1.67M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2020 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 1, 2020
- Shut in
- —
- Plugged
- —
Surface location
29.374606, -97.165556
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 2 leases this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mad King Unit G-2-289918 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 1 | 0 | 1.67M | Jul 2020 – Jul 2026 |
| Mad King Unit O-2-12002 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 1 | 0 | 0 | Apr 2020 – Oct 2020 |
Gas, mcf lease total
Last 12 months 49,538 · prior 12 46,711(+6%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCJul 2020 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 860339-98 | Drill | Marathon Oil EF LLC | Jan 28, 2020 | Dec 31, 2019 | Feb 1, 2020 | 23,000 |
| 860339-99 | Drill | Marathon Oil EF LLC | Dec 20, 2019 | Dec 31, 2019 | Feb 1, 2020 | 23,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-289918 | — | — | — | — |
| — | — O-2-12002 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 394 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| FrioFRIO - DISPOSAL | 499 | -105 |
| Vicksburg | 1,099 | -705 |
| YeguaYEGUA - DISPOSAL | 2,299 | -1,905 |
| WilcoxWILCOX - DISPOSAL | 5,727 | -5,333 |
| Eagle FordEAGLE FORD - H2S | 12,635 | -12,241 |
| Eagle FordEAGLE FORD - H2S | 13,062 | -12,668 |
| Catahoula | — | — |
| EdwardsEDWARDS - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 13,471 | 21,536 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 3,937 | 17.5 | 2,396 S |
| 9.625 | 12,681 | 12.25 | 2,136 S |
| 5.5 | 21,640 | 8.75 | 2,233 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 | Jan 25, 2022 | Dec 29, 2021 | Yes |
| 00 | Sep 28, 2020 | Aug 7, 2020 | Yes |
| 00 | Jul 6, 2020 | Jun 25, 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 42-285-34135 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-285-34135 → 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.
Drellek Unit42-285-34134
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Frio | 499 | -105 |
| Vicksburg | 1,099 | -705 |
| Yegua | 2,299 | -1,905 |
| Wilcox | 5,723 | -5,329 |
| Eagle Ford | 12,556 | -12,162 |
| Catahoula | — | |
| Edwards | — |
Kloesel Unit42-285-34057
1.7 KM · Rocky Creek Resources, LLC · Section with this well →
| Frio | 499 | -154 |
| Vicksburg | 1,099 | -754 |
| Yegua | 2,299 | -1,954 |
| Wilcox | 5,652 | -5,307 |
| Austin Chalk | 12,389 | -12,044 |
| Eagle Ford | 12,936 | -12,591 |
| Edwards | — | |
| Catahoula | — |
Five Star Unit42-285-34058
2.8 KM · Rocky Creek Resources, LLC · Section with this well →
| Frio | 600 | -240 |
| Vicksburg | 1,199 | -839 |
| Yegua | 2,598 | -2,238 |
| Wilcox | 5,794 | -5,434 |
| Austin Chalk | 12,573 | -12,213 |
| Eagle Ford | 13,124 | -12,764 |
| Catahoula | — | |
| Edwards | — |
Frances42-285-34125
3.2 KM · Rocky Creek Resources, LLC · Section with this well →
| Catahoula | 1,700 | -1,398 |
| Frio | 2,300 | -1,998 |
| Vicksburg | 2,500 | -2,198 |
| Yegua | 4,600 | -4,298 |
| Wilcox | 5,400 | -5,098 |
| Eagle Ford | 12,987 | -12,685 |
| Edwards | — |
Finn Unit42-285-34309
3.5 KM · EOG Resources, Inc. · Section with this well →
| Yegua | 2,836 | -2,427 |
| Wilcox | 5,793 | -5,384 |
| Anacacho | 12,343 | -11,934 |
| Austin Chalk | 12,907 | -12,498 |
| Eagle Ford | 13,146 | -12,737 |
| Catahoula | — | |
| Edwards | — | |
| Frio | — |
9 TOPS · FIRST 8
Finn Unit42-285-34308
3.5 KM · EOG Resources, Inc. · Section with this well →
| Yegua | 2,837 | -2,428 |
| Wilcox | 5,794 | -5,385 |
| Anacacho | 12,370 | -11,961 |
| Austin Chalk | 12,905 | -12,496 |
| Eagle Ford | 13,187 | -12,778 |
| Frio | — | |
| Edwards | — | |
| Catahoula | — |
9 TOPS · FIRST 8
Schuetzeberg Unit42-285-34311
3.5 KM · EOG Resources, Inc. · Section with this well →
| Yegua | 2,821 | -2,412 |
| Wilcox | 5,778 | -5,369 |
| Anacacho | 12,360 | -11,951 |
| Austin Chalk | 12,902 | -12,493 |
| Eagle Ford | 13,193 | -12,784 |
| Edwards | — | |
| Frio | — | |
| Vicksburg | — |
9 TOPS · FIRST 8
Schuetzeberg Unit42-285-34312
3.5 KM · EOG Resources, Inc. · Section with this well →
| Yegua | 2,821 | -2,413 |
| Wilcox | 5,778 | -5,370 |
| Anacacho | 12,345 | -11,937 |
| Austin Chalk | 12,881 | -12,473 |
| Eagle Ford | 13,178 | -12,770 |
| Edwards | — | |
| Frio | — | |
| Vicksburg | — |
9 TOPS · FIRST 8
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/28534135, documented in the API reference.