WELL · 42-255-37535 · DISTRICT 2
H.anzaldua-Hedtke SA #1H
Karnes County · Eagleville (Eagle Ford-2) field · Producing · Horizontal
H.Anzaldua-Hedtke SA #1H (API 42-255-37535) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed May 15, 2023 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued June 28, 2022, permitted to 11,730 ft.
Completion filings report 10 formation tops, including Queen City, Reklaw, Carrizo, Wilcox.
Its lease has reported 262K barrels of oil and 466K mcf of gas since October 2022, 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 LLCJun 28, 2022 |
- 11,730
- total depth, ft
- 1
- permits on file
- Jun 28, 2022
- last permit issued
- May 15, 2023
- completed
- 262K
- cumulative oil, bbl
- 466K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2022 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 15, 2023
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
Surface location
28.840208, -97.996194
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 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 |
|---|---|---|---|---|---|---|
| H.anzaldua-Hedtke SA O-2-12476 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 1 | 262K | 466K | Oct 2022 – Jul 2026 |
Oil, barrels lease total
Last 12 months 51,041 · prior 12 41,468(+23%)
Gas, mcf lease total
Last 12 months 89,578 · prior 12 100,763(-11%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCMar 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 881587-99 | Drill | Marathon Oil EF LLC | Jun 27, 2022 | Jun 28, 2022 | Jan 29, 2023 | 26,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 15, 2023 | H.anzaldua-Hedtke SA O-2-12476 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | Producing | 11,730 |
Formation tops
As filed on W-2/G-1. Subsea from 449 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 3,602 | -3,153 |
| Reklaw | 4,215 | -3,766 |
| Carrizo | 4,746 | -4,297 |
| WilcoxWILCOX - DISPOSAL | 4,811 | -4,362 |
| Austin ChalkAUSTIN CHALK - H2S | 11,435 | -10,986 |
| Eagle FordEAGLE FORD - H2S | 11,629 | -11,180 |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| SligoSLIGO - H2S | — | — |
| YeguaYEGUA - DISPOSAL | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,807 | 22,854 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,869 | 12.25 | 1,450 S |
| 6 | 22,854 | 8.75 | 3,791 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 | Aug 3, 2023 | Jul 21, 2023 | Yes |
| 00 | Jul 7, 2023 | Jun 19, 2023 | — |
| 00 | Dec 15, 2022 | Nov 15, 2022 | 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 42-255-37535 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-37535 → 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.
Martinez-H.henke-Hedtke SA42-255-37536
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 3,602 | -3,153 |
| Reklaw | 4,215 | -3,766 |
| Carrizo | 4,746 | -4,297 |
| Wilcox | 4,811 | -4,362 |
| Austin Chalk | 11,445 | -10,996 |
| Eagle Ford | 11,645 | -11,196 |
| Yegua | — | |
| Edwards | — |
10 TOPS · FIRST 8
Scheele-Huth Unit A42-255-37533
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 3,602 | -3,153 |
| Reklaw | 4,215 | -3,766 |
| Carrizo | 4,746 | -4,297 |
| Wilcox | 4,811 | -4,362 |
| Austin Chalk | 11,428 | -10,979 |
| Eagle Ford | 11,620 | -11,171 |
| Yegua | — | |
| Frio | — |
10 TOPS · FIRST 8
Hedtke-H.henke-Davenport SA42-255-37537
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 3,602 | -3,153 |
| Reklaw | 4,215 | -3,766 |
| Carrizo | 4,746 | -4,297 |
| Wilcox | 4,811 | -4,362 |
| Austin Chalk | 11,463 | -11,014 |
| Eagle Ford | 11,653 | -11,204 |
| Frio | — | |
| Sligo | — |
10 TOPS · FIRST 8
W.mejor-Dav-Jor-Fra SA42-255-37539
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 3,602 | -3,152 |
| Reklaw | 4,215 | -3,765 |
| Carrizo | 4,746 | -4,296 |
| Wilcox | 4,811 | -4,361 |
| Austin Chalk | 11,457 | -11,007 |
| Eagle Ford | 11,657 | -11,207 |
| Sligo | — | |
| Edwards | — |
10 TOPS · FIRST 8
Pfeifer-Pfeifer Bell SA42-255-37670
0.8 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 3,592 | -3,118 |
| Reklaw | 4,181 | -3,707 |
| Carrizo | 4,744 | -4,270 |
| Wilcox | 4,798 | -4,324 |
| Austin Chalk | 11,370 | -10,896 |
| Eagle Ford | 11,564 | -11,090 |
| Yegua | — | |
| Edwards | — |
10 TOPS · FIRST 8
Best Bateman-Best Beard SA42-255-37669
0.8 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 3,592 | -3,122 |
| Reklaw | 4,181 | -3,711 |
| Carrizo | 4,744 | -4,274 |
| Wilcox | 4,798 | -4,328 |
| Austin Chalk | 11,362 | -10,892 |
| Eagle Ford | 11,559 | -11,089 |
| Yegua | — | |
| Edwards | — |
10 TOPS · FIRST 8
Hedtke-Henke Unit42-255-37674
0.9 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 3,620 | -3,166 |
| Reklaw | 4,213 | -3,759 |
| Carrizo | 4,716 | -4,262 |
| Wilcox | 4,799 | -4,345 |
| Austin Chalk | 11,408 | -10,954 |
| Eagle Ford | 11,603 | -11,149 |
| Sligo | — | |
| Yegua | — |
10 TOPS · FIRST 8
Hedtke-Henke Unit42-255-37675
0.9 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 3,620 | -3,166 |
| Reklaw | 4,213 | -3,759 |
| Carrizo | 4,716 | -4,262 |
| Wilcox | 4,799 | -4,345 |
| Austin Chalk | 11,426 | -10,972 |
| Eagle Ford | 11,623 | -11,169 |
| Yegua | — | |
| Edwards | — |
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/25537535, documented in the API reference.