WELL · 42-255-34996 · DISTRICT 2
Brysch Jonas Unit #4H
Karnes County · Eagleville (Eagle Ford-2) field · Shut IN · Horizontal
Brysch Jonas Unit #4H (API 42-255-34996) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed December 7, 2016 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit, issued April 20, 2016, permitted to 20,500 ft.
Completion filings report 10 formation tops, including Yegua, Queen City, Reklaw, Carrizo.
Its lease has reported 1.69M barrels of oil and 3.33M mcf of gas since August 2011, last reporting in July 2026. The lease carries 9 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 LLCApr 20, 2016 |
- 20,500
- total depth, ft
- 1
- permits on file
- Apr 20, 2016
- last permit issued
- Dec 7, 2016
- completed
- 1.69M
- cumulative oil, bbl
- 3.33M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 7, 2016
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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.
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 9 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Brysch Jonas Unit O-2-9818 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 9 | 1.69M | 3.33M | Aug 2011 – Jul 2026 |
Oil, barrels lease total
Last 12 months 19,982 · prior 12 10,405(+92%)
Gas, mcf lease total
Last 12 months 15,394 · prior 12 22,512(-32%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Hilcorp Energy CompanyAug 2011 → Oct 2011
- 2Marathon Oil EF LLCNov 2011 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 815035-99 | Drill | Marathon Oil EF LLC | Apr 13, 2016 | Apr 20, 2016 | Aug 12, 2016 | 20,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-9818 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 370 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| YeguaYEGUA - DISPOSAL | 1,834 | -1,464 |
| Queen City | 3,980 | -3,610 |
| Reklaw | 4,447 | -4,077 |
| Carrizo | 4,938 | -4,568 |
| WilcoxWILCOX - DISPOSAL | 6,169 | -5,799 |
| Austin ChalkAUSTIN CHALK - H2S | 11,835 | -11,465 |
| Eagle FordEAGLE FORD - H2S | 12,023 | -11,653 |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| SligoSLIGO - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,454 | 19,357 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,925 | 12.25 | 1,310 S |
| 5.5 | 19,467 | 8.5 | 2,455 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 | Feb 13, 2017 | Jan 13, 2017 | 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 42-255-34996 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-34996 → 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.
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/25534996, documented in the API reference.