TEXAS · WELLS · LIVE OAK COUNTY · GUAJILLO-STCH SA4 LEASE · API 42-297-36419 · DISTRICT 02
Guajillo-Stch SA4 #4H
Live Oak County · Eagleville (Eagle Ford-2) field · Producing · Horizontal
Guajillo-Stch Sa4 #4H (API 42-297-36419) is a horizontal well in Live Oak County operated by Marathon Oil EF LLC, completed August 9, 2024 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued March 7, 2024, permitted to 11,345 ft.
Completion filings report 10 formation tops, including Queen City, Wilcox, Eagle Ford, Austin Chalk.
Its lease has reported 226K barrels of oil and 531K mcf of gas since June 2024, 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 LLCMar 7, 2024 |
- 11,345
- total depth, ft
- 1
- permits on file
- Mar 7, 2024
- last permit issued
- Aug 9, 2024
- completed
- 226K
- cumulative oil, bbl
- 531K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2024 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Aug 9, 2024
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
Surface location
28.636731, -98.298061
Permit surface location from the RRC GIS record, in Live Oak 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 |
|---|---|---|---|---|---|---|
| Guajillo-Stch SA4 O-2-12835 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 1 | 226K | 531K | Jun 2024 – Jul 2026 |
Oil, barrels lease total
Last 12 months 50,040 · prior 12 175,572(-71%)
Gas, mcf lease total
Last 12 months 172,308 · prior 12 359,112(-52%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCJun 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 897444-99 | Drill | Marathon Oil EF LLC | Feb 16, 2024 | Mar 7, 2024 | Mar 11, 2024 | 22,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Aug 9, 2024 | Guajillo-Stch SA4 O-2-12835 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | Producing | 11,345 |
Formation tops
As filed on W-2/G-1. Subsea from 234 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 2,746 | -2,512 |
| Wilcox | 4,052 | -3,818 |
| Eagle FordEAGLE FORD - H2S | 11,015 | -10,781 |
| Austin Chalk | — | — |
| Cook Mountain | — | — |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| Hockley - Disposal | — | — |
| JacksonJACKSON-YEGUA - DISPOSAL | — | — |
| SligoSLIGO - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,537 | 19,520 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,715 | 12.25 | 1,375 S |
| 5.5 | 19,517 | 8.75 | 2,780 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 | Feb 27, 2025 | Dec 26, 2024 | — |
| 00 | Nov 19, 2024 | Sep 28, 2024 | 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 42-297-36419 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-297-36419 → 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.
Guajillo-Idylwood SA342-297-36418
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 2,746 | -2,511 |
| Wilcox | 4,052 | -3,817 |
| Austin Chalk | 10,931 | -10,696 |
| Eagle Ford | 11,021 | -10,786 |
| Frio | — | |
| Edwards | — | |
| Cook Mountain | — | |
| Sligo | — |
10 TOPS · FIRST 8
Guajillo-Stch SA242-297-36417
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 2,746 | -2,511 |
| Wilcox | 4,052 | -3,817 |
| Austin Chalk | 10,934 | -10,699 |
| Eagle Ford | 11,027 | -10,792 |
| Jackson | — | |
| Hockley - Disposal | — | |
| Sligo | — | |
| Edwards | — |
10 TOPS · FIRST 8
Guajillo-Whitsett Posey SA142-297-36416
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 2,746 | -2,512 |
| Wilcox | 4,052 | -3,818 |
| Austin Chalk | 10,928 | -10,694 |
| Eagle Ford | 11,020 | -10,786 |
| Jackson | — | |
| Hockley - Disposal | — | |
| Sligo | — | |
| Edwards | — |
10 TOPS · FIRST 8
Guajillo West42-297-35886
0.1 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 2,950 | -2,718 |
| Wilcox | 5,240 | -5,008 |
| Austin Chalk | 10,910 | -10,678 |
| Eagle Ford | 11,029 | -10,797 |
| Frio | — | |
| Hockley - Disposal | — | |
| Edwards | — | |
| Sligo | — |
10 TOPS · FIRST 8
Guajillo West42-297-35885
0.1 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 2,950 | -2,717 |
| Wilcox | 5,240 | -5,007 |
| Austin Chalk | 10,911 | -10,678 |
| Eagle Ford | 11,030 | -10,797 |
| Frio | — | |
| Sligo | — | |
| Jackson | — | |
| Hockley - Disposal | — |
10 TOPS · FIRST 8
Guajillo West42-297-35884
0.1 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 2,950 | -2,715 |
| Wilcox | 5,240 | -5,005 |
| Austin Chalk | 10,928 | -10,693 |
| Eagle Ford | 11,048 | -10,813 |
| Hockley - Disposal | — | |
| Jackson | — | |
| Edwards | — | |
| Cook Mountain | — |
10 TOPS · FIRST 8
Guajillo West42-297-35883
0.1 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 2,950 | -2,715 |
| Wilcox | 5,240 | -5,005 |
| Austin Chalk | 10,927 | -10,692 |
| Eagle Ford | 11,043 | -10,808 |
| Cook Mountain | — | |
| Sligo | — | |
| Hockley - Disposal | — | |
| Jackson | — |
10 TOPS · FIRST 8
74 Ranch-Guajillo Unit a AC42-297-35982
0.2 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 3,091 | -2,860 |
| Wilcox | 5,499 | -5,268 |
| Austin Chalk | 10,958 | -10,727 |
| Frio | — | |
| Eagle Ford | — | |
| Hockley - Disposal | — | |
| Edwards | — | |
| Cook Mountain | — |
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/29736419, documented in the API reference.