WELL · 42-285-34171 · DISTRICT 2
Shiner Unit B #2H
Lavaca County · Eagleville (Eagle Ford-2) field · Horizontal
Shiner Unit B #2H (API 42-285-34171) is a horizontal well in Lavaca County operated by Marathon Oil EF LLC, completed April 11, 2023.
The RRC has issued one drilling permit, issued March 9, 2021, permitted to 26,000 ft.
Completion filings report 13 formation tops, including Cook Mountain, Queen City, Reklaw, Carrizo.
Its 2 leases have reported 89.8K barrels of oil and 1.62M mcf of gas since June 2013, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Sep 26, 2025
- Permits on file
- 3,191
- Phone
- (832) 486-2737
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 LLCMar 9, 2021 |
- 26,000
- total depth, ft
- 1
- permits on file
- Mar 9, 2021
- last permit issued
- Apr 11, 2023
- completed
- 89.8K
- cumulative oil, bbl
- 1.62M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2013 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 11, 2023
- Shut in
- —
- Plugged
- —
Surface location
29.429076, -97.222414
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 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Shiner Unit B G-2-296133 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 1 | 0 | 1.3M | Feb 2022 – Jul 2026 |
| Shiner Unit B O-2-10574 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 3 | 89.8K | 320K | Jun 2013 – Jul 2026 |
Gas, mcf lease total
Last 12 months 141,964 · prior 12 118,337(+20%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCJun 2013 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 868166-99 | Drill | Marathon Oil EF LLC | Mar 4, 2021 | Mar 9, 2021 | Apr 27, 2021 | 26,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-296133 | — | — | — | — |
| — | — O-2-10574 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 437 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Cook Mountain | 2,760 | -2,323 |
| Queen City | 3,670 | -3,233 |
| Reklaw | 3,987 | -3,550 |
| Carrizo | 4,773 | -4,336 |
| Wilcox | 4,816 | -4,379 |
| WilcoxWILCOX - DISPOSAL | 4,816 | -4,379 |
| Anacacho | 11,135 | -10,698 |
| Austin Chalk | 11,384 | -10,947 |
| Eagle FordEAGLE FORD - H2S | 12,204 | -11,767 |
| Catahoula | — | — |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| Vicksburg | — | — |
| YeguaYEGUA - DISPOSAL | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,724 | 23,365 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,664 | 17.5 | 1,263 S |
| 9.625 | 9,560 | 12.25 | 1,861 S |
| 5.5 | 23,365 | 8.75 | 3,362 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 12, 2024 | Dec 12, 2023 | Yes |
| 00 | Jun 1, 2023 | May 18, 2023 | — |
| 00 | May 25, 2022 | Feb 28, 2022 | — |
| 00 | Jul 14, 2021 | Jun 28, 2021 | 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 42-285-34171 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-285-34171 → 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 neighbors, subsea-aligned so they line up regardless of surface terrain.
Shiner Unit B42-285-34172
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Cook Mountain | 2,760 | -2,323 |
| Queen City | 3,670 | -3,233 |
| Reklaw | 3,987 | -3,550 |
| Wilcox | 4,816 | -4,379 |
| Anacaho | 11,106 | -10,669 |
| Austin Chalk | 11,366 | -10,929 |
| Eagle Ford | 12,050 | -11,613 |
| Frio | — |
12 TOPS · FIRST 8
Rattler A42-285-34118
0.9 KM · Penn Virginia Oil & Gas, L.P. · Section with this well →
| Catahoula | 50 | 332 |
| Frio | 450 | -68 |
| Vicksburg | 1,050 | -668 |
| Yegua | 2,300 | -1,918 |
| Wilcox | 5,100 | -4,718 |
| Eagle Ford | 12,104 | -11,722 |
| Edwards | — |
Rattler B42-285-34119
0.9 KM · Penn Virginia Oil & Gas, L.P. · Section with this well →
| Catahoula | 50 | 332 |
| Frio | 450 | -68 |
| Vicksburg | 1,050 | -668 |
| Yegua | 2,300 | -1,918 |
| Wilcox | 5,100 | -4,718 |
| Eagle Ford | 12,104 | -11,722 |
| Edwards | — |
Caspian D42-177-34211
1.1 KM · EOG Resources, Inc. · Section with this well →
| Reklaw | 4,020 | -3,592 |
| Carrizo | 4,580 | -4,152 |
| Wilcox | 4,581 | -4,153 |
| Navarro | 9,667 | -9,239 |
| Anacacho | 10,979 | -10,551 |
| Austin Chalk | 11,341 | -10,913 |
| Eagle Ford | 11,880 | -11,452 |
| Edwards | — |
9 TOPS · FIRST 8
Caspian C42-177-34210
1.1 KM · EOG Resources, Inc. · Section with this well →
| Reklaw | 4,020 | -3,592 |
| Carrizo | 4,580 | -4,152 |
| Wilcox | 4,581 | -4,153 |
| Navarro | 9,662 | -9,234 |
| Anacacho | 10,940 | -10,512 |
| Austin Chalk | 11,294 | -10,866 |
| Eagle Ford | 11,880 | -11,452 |
| Buda | — |
9 TOPS · FIRST 8
Atlantic C42-177-34209
1.1 KM · EOG Resources, Inc. · Section with this well →
| Anacacho | 1,098 | -670 |
| Reklaw | 4,020 | -3,592 |
| Carrizo | 4,580 | -4,152 |
| Wilcox | 4,581 | -4,153 |
| Navarro | 9,653 | -9,225 |
| Austin Chalk | 11,352 | -10,924 |
| Eagle Ford | 11,876 | -11,448 |
| Edwards | — |
9 TOPS · FIRST 8
Atlantic A42-177-33996
1.2 KM · EOG Resources, Inc. · Section with this well →
| Reklaw | 4,020 | -3,600 |
| Carrizo | 4,580 | -4,160 |
| Wilcox | 4,581 | -4,161 |
| Navarro | 9,653 | -9,233 |
| Anacacho | 10,960 | -10,540 |
| Austin Chalk | 11,470 | -11,050 |
| Eagle Ford | 11,860 | -11,440 |
| Edwards | — |
9 TOPS · FIRST 8
Caspian A42-177-34003
1.2 KM · EOG Resources, Inc. · Section with this well →
| Reklaw | 4,020 | -3,602 |
| Carrizo | 4,580 | -4,162 |
| Wilcox | 4,581 | -4,163 |
| Navarro | 9,653 | -9,235 |
| Anacacho | 10,956 | -10,538 |
| Austin Chalk | 11,451 | -11,033 |
| Eagle Ford | 11,867 | -11,449 |
| Edwards | — |
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/28534171, documented in the API reference.