WELL · 42-255-37739 · DISTRICT 2
Hemby Unit B #5H
Karnes County · Eagleville (Eagle Ford-2) field · Horizontal
Hemby Unit B #5H (API 42-255-37739) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed April 15, 2023.
The RRC has issued one drilling permit, issued March 14, 2023, permitted to 24,000 ft.
Completion filings report 10 formation tops, including Cook Mountain, Sparta, Queen City, Reklaw.
Its 2 leases have reported 968K barrels of oil and 5.81M mcf of gas since August 2012, last reporting in July 2026. The leases carry 11 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 LLCMar 14, 2023 |
- 24,000
- total depth, ft
- 1
- permits on file
- Mar 14, 2023
- last permit issued
- Apr 15, 2023
- completed
- 968K
- cumulative oil, bbl
- 5.81M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2012 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 15, 2023
- Shut in
- —
- Plugged
- —
Surface location
28.832728, -97.874225
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 2 leases this well is completed on; they carry 11 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Hemby Unit B G-2-295968 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 1 | 0 | 1.12M | Jun 2023 – Jul 2026 |
| Hemby Unit B O-2-10368 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 10 | 968K | 4.68M | Aug 2012 – Jul 2026 |
Gas, mcf lease total
Last 12 months 132,180 · prior 12 246,049(-46%)
Oil, barrels lease total
Last 12 months 15,289 · prior 12 19,357(-21%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCAug 2015 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 888984-99 | Drill | Marathon Oil EF LLC | Mar 13, 2023 | Mar 14, 2023 | Apr 3, 2023 | 24,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-295968 | — | — | — | — |
| — | — O-2-10368 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 322 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Cook Mountain | 3,274 | -2,952 |
| Sparta | 3,986 | -3,664 |
| Queen City | 4,369 | -4,047 |
| Reklaw | 4,787 | -4,465 |
| Carrizo | 5,803 | -5,481 |
| WilcoxWILCOX - DISPOSAL | 5,932 | -5,610 |
| Anacacho | 12,334 | -12,012 |
| Austin ChalkAUSTIN CHALK - H2S | 12,476 | -12,154 |
| FrioFRIO - DISPOSAL | — | — |
| YeguaYEGUA - DISPOSAL | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,874 | 20,559 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,868 | 12.25 | 1,402 S |
| 6 | 20,559 | 8.75 | 3,352 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 | May 7, 2024 | Apr 22, 2024 | Yes |
| 00 | Dec 4, 2023 | Oct 4, 2023 | Yes |
| 00 | Sep 27, 2023 | Sep 13, 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 42-255-37739 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-37739 → 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.
Hemby Unit B42-255-37742
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Cook Mountain | 3,274 | -2,952 |
| Sparta | 3,986 | -3,664 |
| Queen City | 4,369 | -4,047 |
| Reklaw | 4,787 | -4,465 |
| Carrizo | 5,803 | -5,481 |
| Wilcox | 5,932 | -5,610 |
| Anacacho | 12,340 | -12,018 |
| Austin Chalk | 12,483 | -12,161 |
13 TOPS · FIRST 8
Kosub Unit42-255-38070
1.8 KM · Devon Energy Production Co, L.P. · Section with this well →
| Frio | 2,353 | -2,073 |
| Yegua | 3,347 | -3,067 |
| Queen City | 4,431 | -4,151 |
| Reklaw | 4,866 | -4,586 |
| Carrizo | 5,415 | -5,135 |
| Wilcox | 5,633 | -5,353 |
| Midway | 8,753 | -8,473 |
| Austin Chalk | 12,486 | -12,206 |
10 TOPS · FIRST 8
McAlister - Kosub SA A42-255-38072
1.8 KM · Devon Energy Production Co, L.P. · Section with this well →
| Frio | 2,349 | -2,069 |
| Yegua | 3,343 | -3,063 |
| Queen City | 4,424 | -4,144 |
| Reklaw | 4,865 | -4,585 |
| Carrizo | 5,415 | -5,135 |
| Wilcox | 5,629 | -5,349 |
| Midway | 8,740 | -8,460 |
| Austin Chalk | 12,486 | -12,206 |
11 TOPS · FIRST 8
McAlister Unit42-255-38073
1.8 KM · Devon Energy Production Co, L.P. · Section with this well →
| Frio | 2,364 | -2,084 |
| Yegua | 3,357 | -3,077 |
| Queen City | 4,443 | -4,163 |
| Reklaw | 4,887 | -4,607 |
| Carrizo | 5,425 | -5,145 |
| Wilcox | 5,643 | -5,363 |
| Midway | 8,738 | -8,458 |
| Austin Chalk | 12,492 | -12,212 |
10 TOPS · FIRST 8
McAlister Unit42-255-38071
1.8 KM · Devon Energy Production Co, L.P. · Section with this well →
| Frio | 2,358 | -2,078 |
| Yegua | 3,351 | -3,071 |
| Queen City | 4,434 | -4,154 |
| Reklaw | 4,881 | -4,601 |
| Carrizo | 5,415 | -5,135 |
| Wilcox | 5,637 | -5,357 |
| Midway | 8,741 | -8,461 |
| Austin Chalk | 12,520 | -12,240 |
11 TOPS · FIRST 8
McAlister Unit42-255-35732
2.2 KM · Encana Oil & Gas(usa) Inc. · Section with this well →
| Yegua | 2,199 | -1,909 |
| Queen City | 4,487 | -4,197 |
| Reklaw | 4,777 | -4,487 |
| Carrizo | 5,291 | -5,001 |
| Wilcox | 7,356 | -7,066 |
| Austin Chalk | 12,411 | -12,121 |
| Eagle Ford | 12,537 | -12,247 |
| Edwards | — |
10 TOPS · FIRST 8
McAlister Unit42-255-35733
2.2 KM · Encana Oil & Gas(usa) Inc. · Section with this well →
| Yegua | 2,205 | -1,915 |
| Queen City | 4,501 | -4,211 |
| Reklaw | 4,791 | -4,501 |
| Carrizo | 5,306 | -5,016 |
| Wilcox | 7,392 | -7,102 |
| Austin Chalk | 12,428 | -12,138 |
| Eagle Ford | 12,551 | -12,261 |
| Sligo | — |
10 TOPS · FIRST 8
McAlister Unit42-255-37887
2.2 KM · Devon Energy Production Co, L.P. · Section with this well →
| Frio | 2,173 | -1,875 |
| Yegua | 3,157 | -2,859 |
| Queen City | 4,249 | -3,951 |
| Reklaw | 4,700 | -4,402 |
| Carrizo | 5,281 | -4,983 |
| Wilcox | 5,465 | -5,167 |
| Austin Chalk | 12,420 | -12,122 |
| Eagle Ford | 12,557 | -12,259 |
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/25537739, documented in the API reference.