WELL · 42-255-33515 · DISTRICT 2
Sprencel-Peck Unit #3H
Karnes County · Eagleville (Eagle Ford-2) field · Producing · Horizontal
Sprencel-Peck Unit #3H (API 42-255-33515) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed April 8, 2015 and listed as producing on the RRC schedule.
The RRC has issued 2 drilling permits between 2014 and 2026, permitted to 17,600 ft.
Completion filings report 10 formation tops, including Wilcox, Austin Chalk, Eagle Ford, Carrizo.
Its lease has reported 1.44M barrels of oil and 1.78M mcf of gas since January 2012, last reporting in July 2026. The lease carries 7 wells, so these are lease totals, not this well alone.
Operator of record
Houston, TX · P-5 Y, filed Aug 4, 2025 · 3,191 permits on file · (800) 332-9449
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 LLCOct 8, 2026 |
- 17,600
- total depth, ft
- 2
- permits on file
- Oct 8, 2026
- last permit issued
- Apr 8, 2015
- completed
- 1.44M
- cumulative oil, bbl
- 1.78M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2012 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 8, 2015
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
28.908519, -97.964325
OpenStreetMap → · Google Maps →
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; they carry 7 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sprencel-Peck Unit O-2-9900 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 7 | 1.44M | 1.78M | Jan 2012 – Jul 2026 |
Oil, barrels lease total
Last 12 months 23,093 · prior 12 24,727(-7%)
Gas, mcf lease total
Last 12 months 21,114 · prior 12 29,274(-28%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCJan 2012 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 919107-99 | Recompletion | Marathon Oil EF LLC | Oct 2, 2026 | Oct 8, 2026 | — | 11,428 |
| 775664-99 | Drill | Marathon Oil EF LLC | Dec 13, 2013 | Jan 2, 2014 | Jan 14, 2014 | 17,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-9900 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 355 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| WilcoxWILCOX - DISPOSAL | 7,352 | -6,997 |
| Austin ChalkAUSTIN CHALK - H2S | 10,898 | -10,543 |
| Eagle FordEAGLE FORD - H2S | 11,127 | -10,772 |
| Austin ChalkAUSTIN CHALK - H2S | — | — |
| Carrizo | — | — |
| Eagle FordEAGLE FORD - H2S | — | — |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| Queen City | — | — |
| Reklaw | — | — |
| SligoSLIGO - H2S | — | — |
| WilcoxWILCOX - DISPOSAL | — | — |
| YeguaYEGUA - DISPOSAL | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,349 | 16,905 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,287 | 12.25 | 1,330 S |
| 5.5 | 17,052 | 8.5 | 1,755 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 7, 2016 | Nov 17, 2016 | Yes |
| 00 | Jun 3, 2014 | Apr 16, 2014 | 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 42-255-33515 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-33515 → 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 neighbours, subsea-aligned so they line up regardless of surface terrain.
Sprencel Peck-Salge Rafter SA42-255-37075
0.6 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,502 | -1,183 |
| Queen City | 3,352 | -3,033 |
| Reklaw | 3,882 | -3,563 |
| Carrizo | 4,452 | -4,133 |
| Wilcox | 4,502 | -4,183 |
| Austin Chalk | 10,968 | -10,649 |
| Eagle Ford | 11,142 | -10,823 |
| Frio | — |
10 TOPS · FIRST 8
Jauer Peck-Hons Brodsky SA42-255-37073
0.6 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,502 | -1,183 |
| Queen City | 3,352 | -3,033 |
| Reklaw | 3,882 | -3,563 |
| Carrizo | 4,452 | -4,133 |
| Wilcox | 4,502 | -4,183 |
| Austin Chalk | 10,956 | -10,637 |
| Eagle Ford | 11,206 | -10,887 |
| Frio | — |
10 TOPS · FIRST 8
Hons Brodsky Unit42-255-37070
0.7 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,502 | -1,184 |
| Queen City | 3,352 | -3,034 |
| Reklaw | 3,882 | -3,564 |
| Carrizo | 4,452 | -4,134 |
| Wilcox | 4,502 | -4,184 |
| Austin Chalk | 10,992 | -10,674 |
| Eagle Ford | 11,233 | -10,915 |
| Sligo | — |
10 TOPS · FIRST 8
Hons Brodsky Unit42-255-37069
0.7 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,502 | -1,184 |
| Queen City | 3,352 | -3,034 |
| Reklaw | 3,882 | -3,564 |
| Carrizo | 4,452 | -4,134 |
| Wilcox | 4,502 | -4,184 |
| Austin Chalk | 11,021 | -10,703 |
| Eagle Ford | 11,261 | -10,943 |
| Frio | — |
10 TOPS · FIRST 8
Salge Rafter-Rippstein Rafter SA42-255-37074
0.7 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,502 | -1,185 |
| Queen City | 3,352 | -3,035 |
| Reklaw | 3,882 | -3,565 |
| Carrizo | 4,452 | -4,135 |
| Wilcox | 4,502 | -4,185 |
| Austin Chalk | 11,048 | -10,731 |
| Eagle Ford | 11,303 | -10,986 |
| Edwards | — |
10 TOPS · FIRST 8
Hons Brodsky-Hons Rafter SA42-255-37072
0.7 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,502 | -1,186 |
| Queen City | 3,352 | -3,036 |
| Reklaw | 3,882 | -3,566 |
| Carrizo | 4,452 | -4,136 |
| Wilcox | 4,502 | -4,186 |
| Austin Chalk | 11,074 | -10,758 |
| Eagle Ford | 11,308 | -10,992 |
| Edwards | — |
10 TOPS · FIRST 8
Hartman-Rippstein Mikkelson SA142-255-38029
1.3 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,451 | -1,157 |
| Queen City | 3,270 | -2,976 |
| Reklaw | 3,578 | -3,284 |
| Carrizo | 4,436 | -4,142 |
| Austin Chalk | 11,093 | -10,799 |
| Eagle Ford | 11,357 | -11,063 |
| Sligo | — | |
| Edwards | — |
10 TOPS · FIRST 8
Rippstein-Rafter Unit42-255-38028
1.3 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,451 | -1,157 |
| Queen City | 3,270 | -2,976 |
| Reklaw | 3,578 | -3,284 |
| Carrizo | 4,436 | -4,142 |
| Austin Chalk | 11,052 | -10,758 |
| Eagle Ford | 11,301 | -11,007 |
| Wilcox | — | |
| Sligo | — |
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/25533515, documented in the API reference.