TEXAS · WELLS · KARNES COUNTY · FRANKE UNIT LEASE · API 42-255-34899 · DISTRICT 02
Franke Unit #503H
Karnes County · Sugarkane (Eagle Ford) field · Producing · Horizontal
Franke Unit #503H (API 42-255-34899) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed January 23, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued December 21, 2015, permitted to 12,674 ft.
Completion filings report 10 formation tops, including Yegua, Queen City, Reklaw, Carrizo.
Its lease has reported 199K barrels of oil and 1.04M mcf of gas since January 2017, last reporting volume in April 2026.
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 LLCDec 21, 2015 |
- 12,674
- total depth, ft
- 2
- permits on file
- Dec 21, 2015
- last permit issued
- Jan 23, 2017
- completed
- 199K
- cumulative oil, bbl
- 1.04M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · JAN 2017 THROUGH APR 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 23, 2017
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
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 |
|---|---|---|---|---|---|---|
| Franke Unit G-2-281775 | Sugarkane (Eagle Ford) | Marathon Oil EF LLC | 1 | 199K | 1.04M | Jan 2017 – Apr 2026 |
Gas, mcf lease total
Last 12 months 6,048 · prior 12 17,074(-65%)
Wells named Franke Unit
Marathon Oil EF LLC's other wells filed under this lease name in Karnes County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCJan 2017 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 812726-98 | Drill | Marathon Oil EF LLC | Mar 11, 2016 | Dec 21, 2015 | Jun 23, 2016 | 20,000 |
| 812726-99 | Drill | Marathon Oil EF LLC | Dec 15, 2015 | Dec 21, 2015 | Jun 23, 2016 | 20,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 23, 2017 | Franke Unit G-2-281775 | Sugarkane (Eagle Ford) | Marathon Oil EF LLC | Producing | 12,674 |
Formation tops
As filed on W-2/G-1. Subsea from 378 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| YeguaYEGUA - DISPOSAL | 2,082 | -1,704 |
| Queen City | 4,459 | -4,081 |
| Reklaw | 4,660 | -4,282 |
| Carrizo | 5,235 | -4,857 |
| WilcoxWILCOX - DISPOSAL | 6,384 | -6,006 |
| Austin ChalkAUSTIN CHALK - H2S | 12,317 | -11,939 |
| Eagle FordEAGLE FORD - H2S | 12,468 | -12,090 |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| SligoSLIGO - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,710 | 18,501 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,766 | 12.25 | 1,817 S |
| 5.5 | 18,598 | 8.5 | 3,146 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Feb 27, 2017 | Feb 15, 2017 | Yes |
Well logs
The RRC's map lists this well among those with logs online. Its monthly inventories loaded here, which start in July 2006, list none for it, so none are itemized.
Open the RRC's log search for this well ↗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 42-255-34899 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-34899 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for 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/25534899, documented in the API reference.