WELL · 42-177-34846 · DISTRICT 1
Barnhart (EF) #205H
Gonzales County · Horizontal
Barnhart (EF) #205H (API 42-177-34846) is a permitted horizontal well in Gonzales County filed by Marathon Oil EF LLC; no completion report is on file yet.
The RRC has issued one drilling permit, issued July 16, 2026, permitted to 17,500 ft.
Operator of record
Houston, TX · P-5 Y, filed Aug 4, 2025 · 3,191 permits on file · (800) 332-9449
SOURCE · LATEST PERMIT (NO EWA RECORD)
What each RRC source says
| Wellbore schedule | none |
| Production reports | none |
| Latest permit | Marathon Oil EF LLCJul 16, 2026 |
- 17,500
- total depth, ft
- 1
- permits on file
- Jul 16, 2026
- last permit issued
- —
- completed
- —
- cumulative oil, bbl
- —
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS
Surface location
29.316719, -97.491253
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Gonzales County.
Only the permit record exists for this well so far, here and in the RRC's wellbore query. Completion reports, formation tops, lease production, and the scanned filings appear once the operator files a completion report, typically months after drilling. Petrora refreshes the wellbore file weekly, so a filing from the last few days may reach the RRC before it shows here. How long each source takes →
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 917217-99 | Drill | Marathon Oil EF LLC | Jul 14, 2026 | Jul 16, 2026 | — | 17,500 |
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well has no tops filed, so it cannot anchor a section; its neighbours can.
Barnhart (EF)42-177-32494
0.2 KM · Marathon Oil EF LLC · Section with this well →
| Anacacho | 8,760 | -8,504 |
| Austin Chalk | 8,903 | -8,647 |
| Eagle Ford | 9,340 | -9,084 |
| Eagle Ford | 9,340 | -9,084 |
Barnhart (Ef)-HFS SA842-177-34755
1.0 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 2,375 | -2,097 |
| Carrizo | 2,516 | -2,238 |
| Wilcox | 2,824 | -2,546 |
| Austin Chalk | 8,840 | -8,562 |
| Eagle Ford | 9,269 | -8,991 |
| Edwards | — | |
| Buda | — | |
| Navarro | — |
Barnhart (Ef)-HFS SA742-177-34754
1.0 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 2,372 | -2,135 |
| Carrizo | 2,513 | -2,276 |
| Wilcox | 2,820 | -2,583 |
| Austin Chalk | 8,841 | -8,604 |
| Austin Chalk | 8,841 | -8,604 |
| Eagle Ford | 9,279 | -9,042 |
| Eagle Ford | 9,279 | -9,042 |
| Edwards | — |
10 TOPS · FIRST 8
Barnhart (Ef)-HFS SA642-177-34753
1.0 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 2,368 | -2,131 |
| Carrizo | 2,509 | -2,272 |
| Wilcox | 2,814 | -2,577 |
| Austin Chalk | 8,702 | -8,465 |
| Eagle Ford | 9,134 | -8,897 |
| Edwards | — | |
| Navarro | — | |
| Buda | — |
Barnhart (Ef)-HFS SA542-177-34752
1.0 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 2,367 | -2,130 |
| Carrizo | 2,507 | -2,270 |
| Wilcox | 2,811 | -2,574 |
| Austin Chalk | 8,667 | -8,430 |
| Eagle Ford | 9,100 | -8,863 |
| Edwards | — | |
| Navarro | — | |
| Buda | — |
Barnhart (Ef)-HFS SA442-177-34751
1.0 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 2,366 | -2,129 |
| Carrizo | 2,505 | -2,268 |
| Wilcox | 2,810 | -2,573 |
| Austin Chalk | 8,682 | -8,445 |
| Eagle Ford | 9,110 | -8,873 |
| Edwards | — | |
| Navarro | — | |
| Buda | — |
Barnhart (Ef)-HFS SA342-177-34750
1.0 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 2,068 | 373 |
| Carrizo | 2,628 | -187 |
| Wilcox | 2,863 | -422 |
| Austin Chalk | 8,808 | -6,367 |
| Eagle Ford | 9,253 | -6,812 |
| Navarro | — | |
| Edwards | — | |
| Buda | — |
Barnhart (Ef)-HFS SA242-177-34749
1.0 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 2,068 | -1,827 |
| Carrizo | 2,628 | -2,387 |
| Wilcox | 2,863 | -2,622 |
| Austin Chalk | 8,799 | -8,558 |
| Eagle Ford | 9,248 | -9,007 |
| Edwards | — | |
| Buda | — | |
| Navarro | — |
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/17734846, documented in the API reference.