WELL · 42-255-32096 · DISTRICT 2

Oxford Unit #1H

Y

Karnes County · Eagleville (Eagle Ford-2) field · Producing  · Horizontal

Oxford Unit #1H (API 42-255-32096) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed October 5, 2011 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued August 24, 2011, permitted to 13,500 ft.

It was permitted by Hilcorp Energy Company and has since transferred to Marathon Oil EF LLC on the wellbore schedule.

Completion filings report 3 formation tops, including Anaacho, Austin Chalk, Eagle Ford.

Its lease has reported 1.88M barrels of oil and 2.56M mcf of gas since October 2011, last reporting in July 2026. The lease carries 6 wells, so these are lease totals, not this well alone.

Operator of record

Marathon Oil EF LLC

Permitted by Hilcorp Energy Company; the EWA schedule now lists a different operator.

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 scheduleMarathon Oil EF LLC
Production reportsMarathon Oil EF LLCthrough Apr 2026
Latest permitHilcorp Energy CompanyAug 24, 2011

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

13,500
total depth, ft
1
permits on file
Aug 24, 2011
last permit issued
Oct 5, 2011
completed
1.88M
cumulative oil, bbl
2.56M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Oct 2011 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Oct 5, 2011
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 6 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Oxford Unit O-2-9825Eagleville (Eagle Ford-2)Marathon Oil EF LLC61.88M2.56MOct 2011 – Jul 2026

Oil, barrels lease total

Last 12 months 49,714 · prior 12 76,829(-35%)

05K10K202420252026

Gas, mcf lease total

Last 12 months 95,183 · prior 12 132,775(-28%)

010K20K202420252026

Chain of custody

Every operator that reported production on this well's lease, in order.

  1. 1Marathon Oil EF LLCNov 2011 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
722792-99DrillHilcorp Energy CompanyAug 22, 2011Aug 24, 2011Sep 12, 201113,500

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-2-9825————

Formation tops

As filed on W-2/G-1. Subsea from 448 ft elevation.Download CSV →

FormationMD ftSubsea
Anaacho10,770-10,322
Austin Chalk10,910-10,462
Eagle Ford11,120-10,672

Perforations

Perforated and open-hole intervals.

FromToType
11,45916,095Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
10.755,58513.51,680 S
5.516,3028.52,190 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 →

SuffixFiledW-2 / G-1 dateLogs referenced
00Mar 13, 2012Nov 8, 2011Yes

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.

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/25532096, documented in the API reference.