WELL · 42-177-34607 · DISTRICT 1
Barnhart (EF) #26H
Gonzales County · Eagleville (Eagle Ford-1) field · Producing · Horizontal
Barnhart (EF) #26H (API 42-177-34607) is a horizontal well in Gonzales County operated by Marathon Oil EF LLC, completed September 28, 2023 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued April 18, 2023, permitted to 24,000 ft.
Completion filings report 11 formation tops, including Sparta, Reklaw, Carrizo, Wilcox.
Its lease has reported 15M barrels of oil and 18.4M mcf of gas since November 2010, last reporting in July 2026. The lease carries 60 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 LLCApr 18, 2023 |
- 24,000
- total depth, ft
- 1
- permits on file
- Apr 18, 2023
- last permit issued
- Sep 28, 2023
- completed
- 15M
- cumulative oil, bbl
- 18.4M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2010 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 28, 2023
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
29.264711, -97.495117
Permit surface location from the RRC GIS record, in Gonzales 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; they carry 60 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Barnhart (EF) O-1-15397 | Eagleville (Eagle Ford-1) | Marathon Oil EF LLC | 60 | 15M | 18.4M | Nov 2010 – Jul 2026 |
Oil, barrels lease total
Last 12 months 1,174,908 · prior 12 1,325,612(-11%)
Gas, mcf lease total
Last 12 months 1,401,133 · prior 12 1,796,482(-22%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Hilcorp Energy CompanyDec 2010 → Oct 2011
- 2Marathon Oil EF LLCNov 2011 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 889725-99 | Drill | Marathon Oil EF LLC | Apr 11, 2023 | Apr 18, 2023 | Jul 24, 2023 | 24,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-15397 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 222 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Sparta | 1,245 | -1,023 |
| Reklaw | 2,719 | -2,497 |
| Carrizo | 3,298 | -3,076 |
| WilcoxWILCOX - DISPOSAL | 3,499 | -3,277 |
| Anacacho | 9,757 | -9,535 |
| Anacaco | 9,757 | -9,535 |
| Austin ChalkAUSTIN CHALK - H2S | 9,945 | -9,723 |
| Eagle FordEAGLE FORD - H2S | 10,486 | -10,264 |
| BudaBUDA - H2S, DISPOSAL | — | — |
| EdwardsEDWARDS - H2S | — | — |
| Navarro | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,543 | 15,049 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 4,659 | 12.25 | 1,564 S |
| 6 | 15,049 | 8.75 | 2,147 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 | Dec 15, 2023 | Nov 28, 2023 | — |
| 00 | Nov 1, 2023 | Sep 27, 2023 | 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 42-177-34607 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-177-34607 → 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.
Barnhart (Ef)-H Unit SA42-177-34609
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 2,441 | -2,219 |
| Reklaw | 2,719 | -2,497 |
| Carrizo | 3,298 | -3,076 |
| Wilcox | 3,499 | -3,277 |
| Wilcox | 3,499 | -3,277 |
| Anacacho | 9,794 | -9,572 |
| Austin Chalk | 9,899 | -9,677 |
| Eagle Ford | 10,457 | -10,235 |
11 TOPS · FIRST 8
Barnhart (EF)42-177-34608
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Sparta | 1,245 | -1,023 |
| Queen City | 2,441 | -2,219 |
| Reklaw | 2,719 | -2,497 |
| Carrizo | 3,298 | -3,076 |
| Wilcox | 3,499 | -3,277 |
| Anacacho | 9,770 | -9,548 |
| Austin Chalk | 9,929 | -9,707 |
| Eagle Ford | 10,496 | -10,274 |
11 TOPS · FIRST 8
Barnhart (EF) C-E SA 342-177-34372
1.9 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 2,832 | -2,594 |
| Carrizo | 3,429 | -3,191 |
| Wilcox | 4,516 | -4,278 |
| Austin Chalk | 10,461 | -10,223 |
| Eagle Ford | 11,020 | -10,782 |
| Buda | — | |
| Navarro | — | |
| Edwards | — |
Barnhart (EF) C-E SA 242-177-34371
1.9 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 2,832 | -2,592 |
| Carrizo | 3,429 | -3,189 |
| Wilcox | 4,516 | -4,276 |
| Austin Chalk | 10,418 | -10,178 |
| Eagle Ford | 10,994 | -10,754 |
| Buda | — | |
| Edwards | — | |
| Navarro | — |
Barnhart (EF) C-E SA 142-177-34370
1.9 KM · Marathon Oil EF LLC · Section with this well →
| Austin Chalk | 1,365 | -1,125 |
| Reklaw | 2,832 | -2,592 |
| Carrizo | 3,429 | -3,189 |
| Wilcox | 4,516 | -4,276 |
| Eagle Ford | 10,979 | -10,739 |
| Buda | — | |
| Edwards | — | |
| Navarro | — |
Barnhart (EF)42-177-34139
2.1 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 3,106 | -2,864 |
| Carrizo | 3,703 | -3,461 |
| Wilcox | 4,790 | -4,548 |
| Austin Chalk | 10,567 | -10,325 |
| Eagle Ford | 11,215 | -10,973 |
| Buda | — | |
| Edwards | — | |
| Navarro | — |
Barnhart (EF)42-177-34138
2.1 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 3,106 | -2,864 |
| Carrizo | 3,703 | -3,461 |
| Wilcox | 4,790 | -4,548 |
| Austin Chalk | 10,604 | -10,362 |
| Eagle Ford | 11,259 | -11,017 |
| Buda | — | |
| Navarro | — | |
| Edwards | — |
Barnhart (Ef)-J.M. Preston SA942-177-34598
2.3 KM · Marathon Oil EF LLC · Section with this well →
| Sparta | 1,334 | -1,108 |
| Queen City | 2,685 | -2,459 |
| Reklaw | 3,037 | -2,811 |
| Carrizo | 3,705 | -3,479 |
| Wilcox | 3,805 | -3,579 |
| Anacacho | 10,393 | -10,167 |
| Austin Chalk | 10,638 | -10,412 |
| Eagle Ford | 11,234 | -11,008 |
11 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/17734607, documented in the API reference.