WELL · 42-255-35659 · DISTRICT 2

Matterhorn Unit #107H

Karnes County · Sugarkane (Austin Chalk) field · Producing · Horizontal

Matterhorn Unit #107H (API 42-255-35659) is a horizontal well in Karnes County operated by Eog Resources Inc., completed March 1, 2018 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued October 27, 2017, permitted to 11,500 ft.

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

Its lease has reported 3.32M barrels of oil and 13.6M mcf of gas since October 2016, last reporting in July 2026. The lease carries 7 wells, so these are lease totals, not this well alone.

Operator of record

EOG Resources Inc.

Based in: Midland, TX
P-5 status: Active (A)
P-5 last filed: Oct 2, 2025
Permits on file: 16,348
Phone: (713) 651-7000

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	EOG Resources Inc.
Production reports	EOG Resources, Inc.through Apr 2026
Latest permit	EOG Resources, Inc.Oct 27, 2017

11,500: total depth, ft
1: permits on file
Oct 27, 2017: last permit issued
Mar 1, 2018: completed
3.32M: cumulative oil, bbl
13.6M: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Oct 2016 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Mar 1, 2018
Shut in: —
Plugged: —

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

Surface location

29.076797, -97.753544

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; they carry 7 wells in total, so volumes are shared.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
Matterhorn Unit O-2-11308	Sugarkane (Austin Chalk)	EOG Resources, Inc.	7	3.32M	13.6M	Oct 2016 – Jul 2026

Gas, mcf lease total

Last 12 months 568,715 · prior 12 591,643(-4%)

Oil, barrels lease total

Last 12 months 66,716 · prior 12 74,966(-11%)

Chain of custody

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

1EOG Resources, Inc.Oct 2016 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
831995-99	Drill	EOG Resources, Inc.	Oct 13, 2017	Oct 27, 2017	Nov 13, 2017	11,500

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-2-11308	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 407 ft elevation.Download CSV →

Formation	MD ft	Subsea
YeguaYEGUA - DISPOSAL	1,833	-1,426
Queen City	2,738	-2,331
Reklaw	3,163	-2,756
WilcoxWILCOX - DISPOSAL	3,901	-3,494
Carrizo	3,972	-3,565
Austin ChalkAUSTIN CHALK - H2S	10,408	-10,001
Eagle FordEAGLE FORD - H2S	—	—
EdwardsEDWARDS - H2S	—	—
FrioFRIO - DISPOSAL	—	—
SligoSLIGO - H2S	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
10,880	14,427	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
9.625	5,162	12.25	1,400 S
5.5	14,486	8.75	1,735 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	Jul 11, 2018	Mar 19, 2018	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 42-255-35659 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-255-35659 → 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 →

Elbrus Unit42-255-35663

0.0 KM · EOG Resources, Inc. · Section with this well →

Yegua	1,837	-1,430
Queen City	2,742	-2,335
Reklaw	3,167	-2,760
Wilcox	3,905	-3,498
Carrizo	3,976	-3,569
Austin Chalk	10,403	-9,996
Eagle Ford	—
Sligo	—

10 TOPS · FIRST 8

Elbrus Unit42-255-35664

0.0 KM · EOG Resources, Inc. · Section with this well →

Yegua	1,846	-1,439
Queen City	2,751	-2,344
Reklaw	3,176	-2,769
Wilcox	3,914	-3,507
Carrizo	3,985	-3,578
Austin Chalk	10,389	-9,982
Sligo	—
Frio	—

10 TOPS · FIRST 8

Elbrus Unit42-255-35574

0.5 KM · EOG Resources, Inc. · Section with this well →

Frio	3,200	-2,789
Carrizo	3,450	-3,039
Reklaw	3,960	-3,549
Yegua	4,000	-3,589
Wilcox	4,980	-4,569
Queen City	6,440	-6,029
Austin Chalk	10,397	-9,986
Sligo	—

10 TOPS · FIRST 8

Alton Unit42-255-35553

1.2 KM · EOG Resources, Inc. · Section with this well →

Yegua	2,092	-1,689
Queen City	2,997	-2,594
Frio	3,200	-2,797
Reklaw	3,422	-3,019
Wilcox	4,160	-3,757
Carrizo	4,231	-3,828
Austin Chalk	10,637	-10,234
Eagle Ford	10,873	-10,470

10 TOPS · FIRST 8

Alton Unit42-255-35552

1.2 KM · EOG Resources, Inc. · Section with this well →

Yegua	2,092	-1,689
Queen City	2,997	-2,594
Frio	3,200	-2,797
Reklaw	3,422	-3,019
Wilcox	4,160	-3,757
Carrizo	4,231	-3,828
Austin Chalk	10,678	-10,275
Eagle Ford	10,922	-10,519

10 TOPS · FIRST 8

Walter Unit42-255-35917

1.3 KM · EOG Resources, Inc. · Section with this well →

Yegua	2,110	-1,734
Queen City	3,040	-2,664
Reklaw	3,459	-3,083
Wilcox	4,187	-3,811
Carrizo	4,287	-3,911
Austin Chalk	10,649	-10,273
Eagle Ford	10,894	-10,518
Sligo	—

10 TOPS · FIRST 8

Josey Unit42-255-35941

1.3 KM · EOG Resources, Inc. · Section with this well →

Frio	500	-121
Yegua	2,075	-1,696
Queen City	3,005	-2,626
Reklaw	3,424	-3,045
Wilcox	4,152	-3,773
Carrizo	4,252	-3,873
Anacacho	10,504	-10,125
Austin Chalk	10,682	-10,303

10 TOPS · FIRST 8

Kazbek Unit42-255-35915

1.3 KM · EOG Resources, Inc. · Section with this well →

Frio	620	-221
Yegua	1,190	-791
Queen City	3,118	-2,719
Reklaw	3,521	-3,122
Wilcox	4,241	-3,842
Carrizo	4,317	-3,918
Austin Chalk	10,666	-10,267
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/25535659, documented in the API reference.