WELL · 42-255-37815 · DISTRICT 2
May-Ryan Abc-Atlas SA #1H
Karnes County · Eagleville (Eagle Ford-2) field · Horizontal
May-Ryan Abc-Atlas SA #1H (API 42-255-37815) is a plugged horizontal well in Karnes County, plugged December 9, 2023, last operated by Marathon Oil EF LLC.
The RRC has issued one drilling permit, issued July 17, 2023, permitted to 18,000 ft.
Completion filings report 10 formation tops, including Austin Chalk, Carrizo, Eagle Ford, Edwards.
Its 2 leases have reported 291K barrels of oil and 352K mcf of gas since August 2023, last reporting in July 2026. The leases carry 3 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 LLCJul 17, 2023 |
- 18,000
- total depth, ft
- 1
- permits on file
- Jul 17, 2023
- last permit issued
- Aug 4, 2023
- completed
- 291K
- cumulative oil, bbl
- 352K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2023 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 4, 2023
- Shut in
- —
- Plugged
- Dec 9, 2023
Surface location
28.828527, -98.047565
Permit surface location from the RRC GIS record, in Karnes 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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| May-Ryan Abc-Atlas SA O-2-12680 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 2 | 291K | 352K | Aug 2023 – Jul 2026 |
| May-Ryan Abc-Atlas SA1 O-2-12786 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 1 | 0 | 0 | Aug 2023 – Mar 2025 |
Oil, barrels lease total
Last 12 months 81,055 · prior 12 150,563(-46%)
Gas, mcf lease total
Last 12 months 100,960 · prior 12 202,454(-50%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCFeb 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 891753-99 | Drill | Marathon Oil EF LLC | Jun 29, 2023 | Jul 17, 2023 | Aug 2, 2023 | 18,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-12680 | — | — | — | — |
| — | — O-2-12786 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 470 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin ChalkAUSTIN CHALK - H2S | — | — |
| Carrizo | — | — |
| Eagle FordEAGLE FORD - H2S | — | — |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| Queen City | — | — |
| Reklaw | — | — |
| SligoSLIGO - H2S | — | — |
| WilcoxWILCOX - DISPOSAL | — | — |
| YeguaYEGUA - DISPOSAL | — | — |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,598 | 12.25 | 1,411 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 | Jun 17, 2024 | May 14, 2024 | — |
| 00 | Dec 4, 2023 | Nov 20, 2023 | — |
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 42-255-37815 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-37815 → 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.
May-Ryan Unit C42-255-37810
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Sparta | 2,964 | -2,493 |
| Queen City | 3,266 | -2,795 |
| Reklaw | 3,798 | -3,327 |
| Carrizo | 4,446 | -3,975 |
| Wilcox | 4,504 | -4,033 |
| Anacacho | 10,864 | -10,393 |
| Austin Chalk | 11,013 | -10,542 |
| Eagle Ford | 11,185 | -10,714 |
12 TOPS · FIRST 8
May-Ryan Unit C42-255-37811
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Sparta | 2,964 | -2,493 |
| Queen City | 3,266 | -2,795 |
| Reklaw | 3,798 | -3,327 |
| Carrizo | 4,446 | -3,975 |
| Wilcox | 4,504 | -4,033 |
| Anacacho | 10,890 | -10,419 |
| Austin Chalk | 11,011 | -10,540 |
| Eagle Ford | 11,194 | -10,723 |
10 TOPS · FIRST 8
May-Ryan Unit C42-255-37812
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Sparta | 2,964 | -2,493 |
| Queen City | 3,266 | -2,795 |
| Reklaw | 3,798 | -3,327 |
| Carrizo | 4,446 | -3,975 |
| Wilcox | 4,504 | -4,033 |
| Anacacho | 10,890 | -10,419 |
| Austin Chalk | 11,011 | -10,540 |
| Eagle Ford | 11,194 | -10,723 |
12 TOPS · FIRST 8
May-Ryan Unit C-H.hedtke SA42-255-37814
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Sparta | 2,964 | -2,493 |
| Queen City | 3,266 | -2,795 |
| Reklaw | 3,798 | -3,327 |
| Carrizo | 4,446 | -3,975 |
| Wilcox | 4,504 | -4,033 |
| Anacacho | 10,874 | -10,403 |
| Austin Chalk | 11,023 | -10,552 |
| Eagle Ford | 11,201 | -10,730 |
11 TOPS · FIRST 8
May-Ryan Abc-Atlas SA42-255-37842
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Sparta | 2,964 | -2,493 |
| Queen City | 3,266 | -2,795 |
| Reklaw | 3,798 | -3,327 |
| Carrizo | 4,446 | -3,975 |
| Wilcox | 4,504 | -4,033 |
| Anacacho | 10,873 | -10,402 |
| Austin Chalk | 11,015 | -10,544 |
| Eagle Ford | 11,193 | -10,722 |
12 TOPS · FIRST 8
Coy City Ranch a Unit42-255-36296
1.0 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,296 | -833 |
| Queen City | 3,429 | -2,966 |
| Reklaw | 4,085 | -3,622 |
| Carrizo | 4,318 | -3,855 |
| Wilcox | 5,737 | -5,274 |
| Austin Chalk | 11,000 | -10,537 |
| Eagle Ford | 11,186 | -10,723 |
| Edwards | — |
10 TOPS · FIRST 8
Coy City Ranch a Unit42-255-36295
1.0 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,296 | -833 |
| Queen City | 3,429 | -2,966 |
| Reklaw | 4,085 | -3,622 |
| Carrizo | 4,318 | -3,855 |
| Wilcox | 5,737 | -5,274 |
| Austin Chalk | 10,993 | -10,530 |
| Eagle Ford | 11,187 | -10,724 |
| Frio | — |
10 TOPS · FIRST 8
Coy City Ranch a Unit42-255-36294
1.0 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,296 | -834 |
| Queen City | 3,429 | -2,967 |
| Reklaw | 4,085 | -3,623 |
| Carrizo | 4,318 | -3,856 |
| Wilcox | 5,737 | -5,275 |
| Austin Chalk | 10,993 | -10,531 |
| Eagle Ford | 11,183 | -10,721 |
| Sligo | — |
10 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/25537815, documented in the API reference.