WELL · 42-255-37002 · DISTRICT 2

Jordan-Buehring Unit SA #1H

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

Jordan-Buehring Unit SA #1H (API 42-255-37002) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed May 1, 2021 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued September 17, 2020, permitted to 22,000 ft.

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

Its lease has reported 197K barrels of oil and 449K mcf of gas since November 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 17, 2020

22,000: total depth, ft
1: permits on file
Sep 17, 2020: last permit issued
May 1, 2021: completed
197K: cumulative oil, bbl
449K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Nov 2020 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: May 1, 2021
Shut in: —
Plugged: —

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

Surface location

28.830138, -97.986523

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
Jordan-Buehring Unit SA O-2-12100	Eagleville (Eagle Ford-2)	Marathon Oil EF LLC	1	197K	449K	Nov 2020 – Jul 2026

Oil, barrels lease total

Last 12 months 5,197 · prior 12 7,360(-29%)

Gas, mcf lease total

Last 12 months 15,623 · prior 12 27,991(-44%)

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
865077-99	Drill	Marathon Oil EF LLC	Sep 14, 2020	Sep 17, 2020	Jan 1, 2021	22,000

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-2-12100	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 450 ft elevation.Download CSV →

Formation	MD ft	Subsea
YeguaYEGUA - DISPOSAL	1,750	-1,300
Queen City	3,680	-3,230
Reklaw	4,270	-3,820
Carrizo	4,860	-4,410
WilcoxWILCOX - DISPOSAL	4,910	-4,460
Austin ChalkAUSTIN CHALK - H2S	11,621	-11,171
Eagle FordEAGLE FORD - H2S	11,809	-11,359
EdwardsEDWARDS - H2S	—	—
FrioFRIO - DISPOSAL	—	—
SligoSLIGO - H2S	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
12,063	18,631	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
9.625	6,027	12.25	2,359 S
5.5	18,631	8.75	3,263 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
Jun 17, 2021	May 24, 2021	Yes
Jun 3, 2021	Feb 12, 2021	Yes
Jan 5, 2021	Dec 10, 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 42-255-37002 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-255-37002 → 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 →

Jordan Unit42-255-37000

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

Yegua	1,750	-1,299
Queen City	3,680	-3,229
Reklaw	4,270	-3,819
Carrizo	4,860	-4,409
Wilcox	4,910	-4,459
Austin Chalk	11,607	-11,156
Eagle Ford	11,793	-11,342
Frio	—

10 TOPS · FIRST 8

Jordan Unit42-255-36999

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

Yegua	1,570	-1,119
Queen City	3,902	-3,451
Reklaw	4,366	-3,915
Carrizo	4,869	-4,418
Wilcox	6,193	-5,742
Austin Chalk	11,599	-11,148
Eagle Ford	11,791	-11,340
Sligo	—

10 TOPS · FIRST 8

Jordan Unit42-255-37001

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

Yegua	1,570	-1,119
Queen City	3,902	-3,451
Reklaw	4,366	-3,915
Carrizo	4,869	-4,418
Wilcox	6,193	-5,742
Austin Chalk	11,577	-11,126
Eagle Ford	11,640	-11,189
Frio	—

10 TOPS · FIRST 8

Brown Dupnik B-a Psa42-255-35881

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

Yegua	1,917	-1,513
Queen City	4,314	-3,910
Reklaw	4,711	-4,307
Carrizo	5,302	-4,898
Wilcox	6,474	-6,070
Austin Chalk	11,618	-11,214
Eagle Ford	11,804	-11,400
Sligo	—

10 TOPS · FIRST 8

Pfeifer-Whitley Mejor SA42-255-37821

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

Queen City	3,662	-3,205
Reklaw	4,227	-3,770
Carrizo	4,831	-4,374
Wilcox	4,889	-4,432
Austin Chalk	11,603	-11,146
Eagle Ford	11,773	-11,316
Frio	—
Edwards	—

10 TOPS · FIRST 8

Pfeifer-Bell Fransen SA42-255-37827

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

Sparta	3,376	-2,919
Queen City	3,662	-3,205
Reklaw	4,227	-3,770
Carrizo	4,831	-4,374
Wilcox	4,889	-4,432
Anacacho	11,448	-10,991
Austin Chalk	11,586	-11,129
Eagle Ford	11,769	-11,312

12 TOPS · FIRST 8

B. Dupnik a-H. Brown Psa42-255-35880

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

Yegua	1,917	-1,513
Queen City	4,314	-3,910
Reklaw	4,711	-4,307
Carrizo	5,302	-4,898
Wilcox	6,474	-6,070
Austin Chalk	11,648	-11,244
Eagle Ford	11,833	-11,429
Edwards	—

10 TOPS · FIRST 8

Holland-Brown Unit42-255-33995

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

Austin Chalk	1,161	-757
Yegua	1,917	-1,513
Queen City	4,314	-3,910
Reklaw	4,711	-4,307
Carrizo	5,302	-4,898
Wilcox	6,474	-6,070
Eagle Ford	11,858	-11,454
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/25537002, documented in the API reference.