WELL · 42-255-36962 · DISTRICT 2

Carter-Holm-Yanta SA #1H

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

Carter-Holm-Yanta SA #1H (API 42-255-36962) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed May 25, 2021 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued September 8, 2020, permitted to 26,000 ft.

Completion filings report 10 formation tops, including Yegua, Queen City, Reklaw, Carrizo.

Its lease has reported 450K barrels of oil and 897K mcf of gas since October 2020, last reporting in July 2026.

Operator of record

Marathon Oil EF LLC

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 LLCSep 8, 2020

26,000: total depth, ft
1: permits on file
Sep 8, 2020: last permit issued
May 25, 2021: completed
450K: cumulative oil, bbl
897K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Oct 2020 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: May 25, 2021
Shut in: —
Plugged: —

Operator's P-5 on the schedule: Active (A)

Surface location

28.896611, -97.913436

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
Carter-Holm-Yanta SA O-2-12088	Eagleville (Eagle Ford-2)	Marathon Oil EF LLC	1	450K	897K	Oct 2020 – Jul 2026

Oil, barrels lease total

Last 12 months 19,227 · prior 12 15,361(+25%)

Gas, mcf lease total

Last 12 months 42,425 · prior 12 28,873(+47%)

Chain of custody

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

1Marathon Oil EF LLCJan 2021 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
864483-99	Drill	Marathon Oil EF LLC	Jul 30, 2020	Sep 8, 2020	Oct 1, 2020	26,000

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-2-12088	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 335 ft elevation.Download CSV →

Formation	MD ft	Subsea
YeguaYEGUA - DISPOSAL	1,887	-1,552
Queen City	3,872	-3,537
Reklaw	3,937	-3,602
Carrizo	4,937	-4,602
WilcoxWILCOX - DISPOSAL	4,992	-4,657
Austin ChalkAUSTIN CHALK - H2S	11,703	-11,368
Eagle FordEAGLE FORD - H2S	11,930	-11,595
EdwardsEDWARDS - H2S	—	—
FrioFRIO - DISPOSAL	—	—
SligoSLIGO - H2S	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
12,279	21,040	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
9.625	5,752	12.25	1,662 S
5.5	21,040	8.75	3,870 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 →

Filed	W-2 / G-1 date	Logs referenced
Jul 21, 2021	Jun 25, 2021	Yes
Feb 25, 2021	Jan 29, 2021	Yes
Nov 12, 2020	Nov 9, 2020	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 42-255-36962 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-255-36962 → 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 neighbors, subsea-aligned so they line up regardless of surface terrain.

Open the cross-section →

Egbert-Carter-Holm SA42-255-36961

0.0 KM · Marathon Oil EF LLC · Section with this well →

Yegua	1,887	-1,552
Queen City	3,872	-3,537
Reklaw	3,937	-3,602
Carrizo	4,937	-4,602
Wilcox	4,992	-4,657
Austin Chalk	11,628	-11,293
Eagle Ford	11,828	-11,493
Frio	—

10 TOPS · FIRST 8

Egbert Unit42-255-37416

1.1 KM · Marathon Oil EF LLC · Section with this well →

Yegua	1,955	-1,565
Queen City	3,959	-3,569
Reklaw	4,432	-4,042
Carrizo	5,039	-4,649
Wilcox	6,175	-5,785
Austin Chalk	11,838	-11,448
Eagle Ford	11,945	-11,555
Edwards	—

10 TOPS · FIRST 8

Egbert Unit42-255-37415

1.1 KM · Marathon Oil EF LLC · Section with this well →

Yegua	1,955	-1,565
Queen City	3,959	-3,569
Reklaw	4,432	-4,042
Carrizo	5,039	-4,649
Wilcox	5,089	-4,699
Austin Chalk	11,820	-11,430
Eagle Ford	11,994	-11,604
Frio	—

10 TOPS · FIRST 8

Egbert Unit42-255-37414

1.1 KM · Marathon Oil EF LLC · Section with this well →

Yegua	1,955	-1,565
Queen City	3,959	-3,569
Reklaw	4,432	-4,042
Carrizo	5,039	-4,649
Wilcox	5,089	-4,699
Austin Chalk	11,832	-11,442
Eagle Ford	12,005	-11,615
Edwards	—

10 TOPS · FIRST 8

McCoy-Egbert Unit42-255-32804

1.6 KM · Marathon Oil EF LLC · Section with this well →

Anacacho	11,581	-11,161
Austin Chalk	11,723	-11,303
Eagle Ford	11,916	-11,496

Salge Unit42-255-37249

1.7 KM · Marathon Oil EF LLC · Section with this well →

Yegua	1,964	-1,548
Queen City	3,965	-3,549
Reklaw	4,444	-4,028
Carrizo	5,042	-4,626
Wilcox	7,318	-6,902
Austin Chalk	11,867	-11,451
Eagle Ford	11,980	-11,564
Frio	—

10 TOPS · FIRST 8

Karnes City NE NW Alc42-255-35495

1.7 KM · Marathon Oil EF LLC · Section with this well →

Yegua	1,810	-1,464
Queen City	3,981	-3,635
Reklaw	4,415	-4,069
Carrizo	4,964	-4,618
Wilcox	6,278	-5,932
Austin Chalk	11,764	-11,418
Eagle Ford	11,997	-11,651
Sligo	—

10 TOPS · FIRST 8

Karnes City NE Unit42-255-35490

1.8 KM · Marathon Oil EF LLC · Section with this well →

Yegua	1,810	-1,463
Queen City	3,981	-3,634
Reklaw	4,415	-4,068
Carrizo	4,964	-4,617
Wilcox	6,278	-5,931
Austin Chalk	11,772	-11,425
Eagle Ford	12,005	-11,658
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

Developers: this page as JSON is GET /v1/data/wells/25536962, documented in the API reference.