WELL · 42-255-36602 · DISTRICT 2
San Christoval Ranch Unit G AC #1H
Karnes County · Sugarkane (Austin Chalk) field · Producing · Horizontal
San Christoval Ranch Unit G AC #1H (API 42-255-36602) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed April 7, 2020 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 24, 2019, permitted to 22,000 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 | Marathon Oil EF LLCthrough Apr 2026 |
| Latest permit | Marathon Oil EF LLCSep 24, 2019 |
- 22,000
- total depth, ft
- 1
- permits on file
- Sep 24, 2019
- last permit issued
- Apr 7, 2020
- completed
- 0
- cumulative oil, bbl
- 838K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2019 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 7, 2020
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
28.718869, -98.032507
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| San Christoval Ranch Unit G AC G-2-288701 | Sugarkane (Austin Chalk) | Marathon Oil EF LLC | 1 | 0 | 838K | Dec 2019 – Jul 2026 |
Gas, mcf lease total
Last 12 months 72,366 · prior 12 73,185(-1%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCJan 2020 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 857244-99 | Drill | Marathon Oil EF LLC | Sep 19, 2019 | Sep 24, 2019 | Dec 29, 2019 | 22,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-288701 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 404 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| YeguaYEGUA - DISPOSAL | 1,305 | -901 |
| Queen City | 3,165 | -2,761 |
| Reklaw | 3,475 | -3,071 |
| Carrizo | 4,190 | -3,786 |
| WilcoxWILCOX - DISPOSAL | 5,377 | -4,973 |
| Austin ChalkAUSTIN CHALK - H2S | 12,115 | -11,711 |
| Eagle FordEAGLE FORD - H2S | — | — |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| SligoSLIGO - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,539 | 19,004 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 6,259 | 12.25 | 1,517 S |
| 5.5 | 19,011 | 8.75 | 3,062 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 | Aug 19, 2020 | Apr 28, 2020 | Yes |
| 00 | Aug 18, 2020 | Feb 15, 2020 | — |
| 00 | May 7, 2020 | Dec 20, 2019 | 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 42-255-36602 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-36602 → 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.
SCR G-Mobil C SA42-255-36603
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,684 | -1,279 |
| Queen City | 4,007 | -3,602 |
| Wilcox | 6,249 | -5,844 |
| Austin Chalk | 12,174 | -11,769 |
| Eagle Ford | 12,232 | -11,827 |
| Reklaw | — | |
| Sligo | — | |
| Frio | — |
10 TOPS · FIRST 8
San Christoval Ranch Unit G42-255-36600
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,305 | -901 |
| Queen City | 3,165 | -2,761 |
| Reklaw | 3,475 | -3,071 |
| Carrizo | 4,190 | -3,786 |
| Wilcox | 5,377 | -4,973 |
| Austin Chalk | 12,122 | -11,718 |
| Eagle Ford | 12,178 | -11,774 |
| Frio | — |
10 TOPS · FIRST 8
San Christoval Ranch Unit G42-255-36601
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,305 | -896 |
| Queen City | 3,165 | -2,756 |
| Reklaw | 3,475 | -3,066 |
| Carrizo | 4,190 | -3,781 |
| Wilcox | 5,377 | -4,968 |
| Austin Chalk | 12,087 | -11,678 |
| Eagle Ford | 12,156 | -11,747 |
| Frio | — |
10 TOPS · FIRST 8
Mobil C-D-W.weston Psa42-255-36344
1.5 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 2,115 | -1,733 |
| Queen City | 4,415 | -4,033 |
| Reklaw | 4,873 | -4,491 |
| Carrizo | 5,529 | -5,147 |
| Wilcox | 6,762 | -6,380 |
| Austin Chalk | 12,292 | -11,910 |
| Eagle Ford | 12,358 | -11,976 |
| Sligo | — |
10 TOPS · FIRST 8
Wieding-Weston Unit42-255-36343
1.5 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,296 | -914 |
| Queen City | 4,415 | -4,033 |
| Reklaw | 4,873 | -4,491 |
| Carrizo | 5,529 | -5,147 |
| Wilcox | 6,762 | -6,380 |
| Austin Chalk | 12,284 | -11,902 |
| Eagle Ford | 12,358 | -11,976 |
| Sligo | — |
10 TOPS · FIRST 8
Wieding-Weston Unit42-255-36342
1.5 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,296 | -914 |
| Queen City | 4,415 | -4,033 |
| Reklaw | 4,873 | -4,491 |
| Carrizo | 5,529 | -5,147 |
| Wilcox | 6,762 | -6,380 |
| Austin Chalk | 12,314 | -11,932 |
| Eagle Ford | 12,368 | -11,986 |
| Sligo | — |
10 TOPS · FIRST 8
Wieding-Weston Unit42-255-36341
1.5 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,296 | -914 |
| Queen City | 3,429 | -3,047 |
| Reklaw | 4,085 | -3,703 |
| Carrizo | 4,318 | -3,936 |
| Wilcox | 5,737 | -5,355 |
| Austin Chalk | 12,250 | -11,868 |
| Eagle Ford | 12,374 | -11,992 |
| Frio | — |
10 TOPS · FIRST 8
Wieding-Weston Unit42-255-36340
1.5 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 2,115 | -1,734 |
| Queen City | 4,415 | -4,034 |
| Reklaw | 4,873 | -4,492 |
| Carrizo | 5,529 | -5,148 |
| Wilcox | 6,762 | -6,381 |
| Austin Chalk | 12,243 | -11,862 |
| Eagle Ford | 12,373 | -11,992 |
| 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
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