WELL · 42-255-34439 · DISTRICT 2
Mobil Unit B #100
Karnes County · Sugarkane (Eagle Ford) field · Vertical
Mobil Unit B #100 (API 42-255-34439) is a well in Karnes County operated by Marathon Oil EF LLC, completed August 9, 2015.
The RRC has issued 2 drilling permits (amended once) between 2014 and 2020, permitted to 9,000 ft.
Completion filings report 10 formation tops, including Yegua, Queen City, Reklaw, Carrizo.
No lease production has been reported under this well’s leases.
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 | none |
| Latest permit | Marathon Oil EF LLCAug 10, 2020 |
- 9,000
- total depth, ft
- 3
- permits on file
- Aug 10, 2020
- last permit issued
- Aug 9, 2015
- completed
- 0
- cumulative oil, bbl
- 0
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2015 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 9, 2015
- Shut in
- —
- Plugged
- —
Surface location
28.734269, -98.027464
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mobil Unit B O-2-11005 | Sugarkane (Eagle Ford) | Marathon Oil EF LLC | 2 | 0 | 0 | Aug 2015 – Jul 2026 |
No volumes reported on these leases in the last three years.
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 863994-99 | Reclass | Marathon Oil EF LLC | Jun 22, 2020 | Aug 10, 2020 | Jul 30, 2015 | 9,000 |
| 802054-98 | Drill | Marathon Oil EF LLC | Feb 17, 2015 | Dec 22, 2014 | Jul 30, 2015 | 9,000 |
| 802054-99 | Drill | Marathon Oil EF LLC | Dec 19, 2014 | Dec 22, 2014 | Jul 30, 2015 | 8,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-11005 | — | — | — | — |
| — | — O-2-11005 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 442 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| YeguaYEGUA - DISPOSAL | 1,834 | -1,392 |
| YeguaYEGUA-DISPOSAL | 1,834 | -1,392 |
| Queen City | 4,134 | -3,692 |
| Reklaw | 4,591 | -4,149 |
| Carrizo | 5,247 | -4,805 |
| WilcoxWILCOX - DISPOSAL | 6,154 | -5,712 |
| WilcoxWILCOX-DISPOSAL | 6,154 | -5,712 |
| Austin ChalkAUSTIN CHALK - H2S | 7,100 | -6,658 |
| Eagle FordEAGLE FORD - H2S | 8,200 | -7,758 |
| Austin ChalkAUSTIN CHALK - H2S | — | — |
| Eagle FordEAGLE FORD - H2S | — | — |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| SligoSLIGO - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,220 | 8,400 | Perforated |
| 7,226 | 8,200 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 6,103 | 12.25 | 1,895 S |
| 7 | 8,554 | 8.75 | 1,425 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 | Sep 24, 2020 | Aug 12, 2020 | — |
| 00 | Oct 6, 2015 | Oct 2, 2015 | — |
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 42-255-34439 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-34439 → 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.
Mobil C-D-Wieding Weston Psa42-255-35979
0.2 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,848 | -1,413 |
| Queen City | 4,148 | -3,713 |
| Reklaw | 4,606 | -4,171 |
| Carrizo | 5,262 | -4,827 |
| Wilcox | 6,495 | -6,060 |
| Austin Chalk | 12,016 | -11,581 |
| Eagle Ford | 12,103 | -11,668 |
| Edwards | — |
10 TOPS · FIRST 8
Wieding-Weston Unit42-255-35978
0.2 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,848 | -1,413 |
| Queen City | 4,148 | -3,713 |
| Carrizo | 5,262 | -4,827 |
Wieding-Weston Unit42-255-35977
0.2 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,848 | -1,413 |
| Queen City | 4,148 | -3,713 |
| Carrizo | 5,262 | -4,827 |
Wieding-Weston Unit42-255-35976
0.2 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,848 | -1,413 |
| Queen City | 4,148 | -3,713 |
| Carrizo | 5,262 | -4,827 |
Wieding-Weston Unit42-255-35975
0.2 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,848 | -1,413 |
| Queen City | 4,148 | -3,713 |
| Reklaw | 4,606 | -4,171 |
| Carrizo | 5,262 | -4,827 |
| Wilcox | — | |
| Frio | — | |
| Edwards | — | |
| Eagle Ford | — |
10 TOPS · FIRST 8
SCR Unit E-Children Weston SA42-255-37725
1.5 KM · Marathon Oil EF LLC · Section with this well →
| Cook Mountain | 2,586 | -2,179 |
| Sparta | 3,283 | -2,876 |
| Queen City | 3,650 | -3,243 |
| Reklaw | 4,200 | -3,793 |
| Carrizo | 4,886 | -4,479 |
| Wilcox | 5,026 | -4,619 |
| Anacacho | 11,726 | -11,319 |
| Austin Chalk | 11,902 | -11,495 |
13 TOPS · FIRST 8
SCR Unit E-Mobil Unit B SA42-255-37726
1.5 KM · Marathon Oil EF LLC · Section with this well →
| Queen City | 3,650 | -3,243 |
| Reklaw | 4,200 | -3,793 |
| Carrizo | 4,886 | -4,479 |
| Wilcox | 5,026 | -4,619 |
| Austin Chalk | 11,866 | -11,459 |
| Eagle Ford | 11,938 | -11,531 |
| Yegua | — | |
| Edwards | — |
10 TOPS · FIRST 8
Kennedy-Olson Esse 2H Psa42-255-36005
1.7 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 2,053 | -1,620 |
| Queen City | 4,353 | -3,920 |
| Reklaw | 4,811 | -4,378 |
| Carrizo | 5,467 | -5,034 |
| Wilcox | 6,700 | -6,267 |
| Austin Chalk | 12,286 | -11,853 |
| Eagle Ford | 12,337 | -11,904 |
| Edwards | — |
10 TOPS · FIRST 8
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 0
- bbl, last 12 reported months
- 6.49M
- bbl, all reported
- Feb 2020
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000112364 | W-14 Disposal | Canceled Oct 22, 2020 | 25,000 | 3,600 | 7,200–8,400 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 0 · prior 12 624,930(-100%)
TexNet catalog via USGS
Seismicity near this well
- 1
- M2+ events within 10 km, last 2 years
- M2.1
- largest
A proximity count, not an attribution. How to read it →
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/25534439, documented in the API reference.