WELL · 42-013-35821 · DISTRICT 1
74-Atascosa SA 1 #1H
Atascosa County · Eagleville (Eagle Ford-1) field · Producing · Horizontal
74-Atascosa SA 1 #1H (API 42-013-35821) is a horizontal well in Atascosa County operated by Marathon Oil EF LLC, completed October 24, 2021 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued January 15, 2021, permitted to 11,092 ft.
Completion filings report 10 formation tops, including Queen City, Reklaw, Carrizo, Wilcox.
Its lease has reported 356K barrels of oil and 473K mcf of gas since April 2021, last reporting in July 2026.
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 LLCJan 15, 2021 |
- 11,092
- total depth, ft
- 1
- permits on file
- Jan 15, 2021
- last permit issued
- Oct 24, 2021
- completed
- 356K
- cumulative oil, bbl
- 473K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2021 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 24, 2021
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
Surface location
28.651837, -98.320630
Permit surface location from the RRC GIS record, in Atascosa 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 |
|---|---|---|---|---|---|---|
| 74-Atascosa SA 1 O-1-20419 | Eagleville (Eagle Ford-1) | Marathon Oil EF LLC | 1 | 356K | 473K | Apr 2021 – Jul 2026 |
Oil, barrels lease total
Last 12 months 23,362 · prior 12 29,987(-22%)
Gas, mcf lease total
Last 12 months 26,395 · prior 12 35,685(-26%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCJul 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 866999-99 | Drill | Marathon Oil EF LLC | Jan 12, 2021 | Jan 15, 2021 | Mar 11, 2021 | 22,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 24, 2021 | 74-Atascosa SA 1 O-1-20419 | Eagleville (Eagle Ford-1) | Marathon Oil EF LLC | Producing | 11,092 |
Formation tops
As filed on W-2/G-1. Subsea from 287 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 2,528 | -2,241 |
| Reklaw | 3,159 | -2,872 |
| Carrizo | 3,931 | -3,644 |
| WilcoxWILCOX - DISPOSAL | 4,019 | -3,732 |
| AnacachoANACACHO - H2S | 10,513 | -10,226 |
| Austin ChalkAUSTIN CHALK - H2S, DISPOSAL | 10,762 | -10,475 |
| Bartosh | — | — |
| EscondidoESCONDIDO - H2S, DISPOSAL | — | — |
| NavarroNAVARRO - H2S | — | — |
| OlmosOLMOS - DISPOSAL | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,105 | 18,472 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,195 | 12.25 | 1,619 S |
| 5.5 | 18,473 | 8.75 | 3,385 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 | Oct 15, 2025 | Sep 18, 2025 | — |
| 00 | Jan 28, 2022 | Nov 30, 2021 | Yes |
| 00 | Sep 30, 2021 | Jul 26, 2021 | — |
| 00 | Jul 7, 2021 | Apr 9, 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 42-013-35821 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-013-35821 → 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.
74-Atascosa SA 242-013-35823
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 2,528 | -2,241 |
| Reklaw | 3,159 | -2,872 |
| Carrizo | 3,931 | -3,644 |
| Wilcox | 4,019 | -3,732 |
| Anacacho | 10,504 | -10,217 |
| Austin Chalk | 10,757 | -10,470 |
| Escondido | — | |
| Olmos | — |
10 TOPS · FIRST 8
74-Atascosa SA 342-013-35824
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 581 | -297 |
| Anacacho | 1,016 | -732 |
| Reklaw | 2,528 | -2,244 |
| Bartosh | 3,159 | -2,875 |
| Carrizo | 3,931 | -3,647 |
| Wilcox | 4,019 | -3,735 |
| Austin Chalk | 10,763 | -10,479 |
| Olmos | — |
10 TOPS · FIRST 8
74 Ranch Unit S142-013-35763
0.7 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 1,649 | -1,396 |
| Reklaw | 2,931 | -2,678 |
| Carrizo | 3,848 | -3,595 |
| Wilcox | 5,379 | -5,126 |
| Anacacho | 10,563 | -10,310 |
| Austin Chalk | 10,795 | -10,542 |
| Eagle Ford | 10,902 | -10,649 |
| Olmos | — |
11 TOPS · FIRST 8
74 Ranch Unit S142-013-35764
0.7 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 1,649 | -1,400 |
| Reklaw | 2,925 | -2,676 |
| Carrizo | 3,824 | -3,575 |
| Wilcox | 5,324 | -5,075 |
| Anacacho | 10,548 | -10,299 |
| Austin Chalk | 10,784 | -10,535 |
| Navarro | — | |
| Escondido | — |
10 TOPS · FIRST 8
74 Ranch Unit S142-013-35765
0.7 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 1,654 | -1,408 |
| Reklaw | 2,929 | -2,683 |
| Carrizo | 3,249 | -3,003 |
| Wilcox | 3,829 | -3,583 |
| Anacacho | 10,547 | -10,301 |
| Austin Chalk | 10,775 | -10,529 |
| Bartosh | — | |
| Navarro | — |
10 TOPS · FIRST 8
74 Ranch Unit S142-013-35766
0.7 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 2,936 | -2,693 |
| Reklaw | 3,255 | -3,012 |
| Carrizo | 3,834 | -3,591 |
| Wilcox | 5,330 | -5,087 |
| Anacacho | 10,548 | -10,305 |
| Austin Chalk | 10,781 | -10,538 |
| Bartosh | — | |
| Olmos | — |
10 TOPS · FIRST 8
74 Ranch Unit S142-013-35767
0.7 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 3,050 | -2,809 |
| Reklaw | 3,229 | -2,988 |
| Carrizo | 3,930 | -3,689 |
| Wilcox | 5,434 | -5,193 |
| Anacacho | 10,548 | -10,307 |
| Austin Chalk | 10,782 | -10,541 |
| Bartosh | — | |
| Escondido | — |
10 TOPS · FIRST 8
74 Ranch Unit S242-013-35875
1.7 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 2,645 | -2,432 |
| Reklaw | 3,145 | -2,932 |
| Carrizo | 3,705 | -3,492 |
| Wilcox | 3,822 | -3,609 |
| Anacacho | 10,296 | -10,083 |
| Austin Chalk | 10,541 | -10,328 |
| Escondido | — | |
| Navarro | — |
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
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