Petrora

FORMATIONS · RRC WELLBORE FILE

Bartosh

Reported as a top in 722 wells across 9 counties, at a median depth of 3,520 ft (2,798 to 4,951 ft in most wells). 21 of those wells were permitted in the last three years.

A well counts if any of its completion filings report this formation, whether it produces from it or drilled through it. Depths are measured depth as filed; typo depths exist, which is why ranges are percentiles, not extremes. About completion reports →

722
wells reporting a top
21
permitted in last 3 years
9
counties
3,520
median top, ft

COMPUTED OCT 29, 2026 · REBUILT DAILY

Depth by county

Counties with at least five wells reporting the top. Bars are well counts.

CountyWellsMedian, ftP10–P90Last 3 yrs
Atascosa
662
3,6223,014–4,95121
Wilson
41
1,5951,090–1,7000
Gonzales
9
3,4463,400–4,4120

Operators

Current operator of record for wells reporting the top, ranked by wells permitted in the last three years.

OperatorLast 3 yrsAll
EOG Resources, Inc.9237
XTO Energy Inc.964
Tidal Petroleum, Inc.23
BB-Southtex, LLC11
Marathon Oil EF LLC0190
Murphy Expl. & Prod. Co. - USA054
Cabot Oil & Gas Corporation042
Venado Operating Company LLC012
P.S.N. Petroleum, Inc.011
Petroedge Operating IV LLC010
Abraxas Petroleum Corporation09
Silver Falls Petroleum Corp.08
H. & J. Drilling Company08
Cheyenne Petroleum Company07
Sea Eagle Ford, LLC05
Atascosa Exploration, LLC05
Texas American Resources Company05
Chesapeake Operating, L.L.C.04
Newfield Exploration Company04
Virtex Petroleum Company, Inc.04
Mark IV Energy04
Hagen-Greenbriar Expl. Corp.03
Tuskar (Texas), Inc.03
Doyle & Douglas02
Pressly Oil Interest02

Recently permitted wells reporting the Bartosh

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
May 22, 2025ClydesdaleEOG Resources, Inc.Atascosa4,81001336237
May 22, 2025ClydesdaleEOG Resources, Inc.Atascosa4,81001336238
May 22, 2025ClydesdaleEOG Resources, Inc.Atascosa4,81001336239
May 22, 2025ClydesdaleEOG Resources, Inc.Atascosa4,81001336240
May 22, 2025ClydesdaleEOG Resources, Inc.Atascosa4,81001336241
May 20, 2025ClydesdaleEOG Resources, Inc.Atascosa4,81001336236
May 19, 2025ClydesdaleEOG Resources, Inc.Atascosa4,81001336234
May 19, 2025ClydesdaleEOG Resources, Inc.Atascosa4,81001336235
Apr 18, 2024Post OakTidal Petroleum, Inc.Atascosa3,21001336169
Apr 18, 2024Post OakTidal Petroleum, Inc.Atascosa3,21001336170
Apr 11, 2024Emma Tartt Tom #1XTO Energy Inc.Atascosa5,08001336152
Apr 11, 2024Emma Tartt Tom #5XTO Energy Inc.Atascosa5,08001336161
Apr 11, 2024Emma Tartt Tom #4XTO Energy Inc.Atascosa5,08001336162
Apr 11, 2024Emma Tartt Tom #2XTO Energy Inc.Atascosa5,08001336163
Apr 11, 2024Emma Tartt Tom #3XTO Energy Inc.Atascosa5,08001336164
Apr 11, 2024Emma Tartt Tom #6XTO Energy Inc.Atascosa5,08001336165
Apr 11, 2024Emma Tartt Tom #7XTO Energy Inc.Atascosa5,08001336166
Apr 11, 2024Emma Tartt Tom #8XTO Energy Inc.Atascosa5,08001336167
Apr 11, 2024Emma Tartt Tom #9XTO Energy Inc.Atascosa5,08001336168
Mar 5, 2024Gemsbok DEOG Resources, Inc.Atascosa4,70501336144
Feb 21, 2024Brauchle-Moffitt Unit ABB-Southtex, LLCAtascosa77001336136
Oct 27, 2023Appaloosa AEOG Resources, Inc.Atascosa3,88701336116
Oct 27, 2023Appaloosa BEOG Resources, Inc.Atascosa3,91401336117
Oct 27, 2023Appaloosa CEOG Resources, Inc.Atascosa3,94201336118
Oct 27, 2023Appaloosa DEOG Resources, Inc.Atascosa3,95201336119

About this data

Formation tops, elevations, perforations, and casing from the RRC dbf900 wellbore file, refreshed weekly, with reported names normalized to Petrora's formation registry. County and operator breakdowns are rebuilt nightly.

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