Petrora

FORMATIONS · RRC WELLBORE FILE

Avalon

Reported as a top in 815 wells across 6 counties, at a median depth of 7,581 ft (5,446 to 8,550 ft in most wells). 121 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 →

815
wells reporting a top
121
permitted in last 3 years
6
counties
7,581
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
Reeves
328
7,8666,976–8,15028
Culberson
253
6,0775,127–6,35043
Loving
161
8,5107,720–8,81242
Ward
44
8,3027,292–8,4867
Pecos
20
7,7025,608–8,0361
Winkler
9
8,6688,445–8,8490

Operators

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

OperatorLast 3 yrsAll
Chevron U. S. A. Inc.43236
Anadarko E&P Onshore LLC2525
Vital Energy, Inc.1111
Apache Corporation993
Greenlake Energy Operating, LLC913
TRP Operating LLC88
Bosque Texas Oil LLC55
U.S. Energy Development Corp46
Diamondback E&P LLC128
Callon Petroleum Operating Co124
1920 Energy, LLC11
Alchemist Energy, LLC11
Tog Operating, LLC11
Petro-Hunt Permian, LLC11
EOG Resources, Inc.11
BHP Billiton Pet(txla OP) Co053
Thompson, J. Cleo038
Williams, Clayton Energy, Inc.029
Shell Western E&P025
Petro-Hunt Permian, LLC023
Rosetta Resources Operating LP022
LRR Pecos Valley, LLC019
Petrohawk Operating Company018
XTO Energy Inc.013
Patriot Resources, Inc.012

Recently permitted wells reporting the Avalon

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
Mar 2, 2026Corbets A5Callon Petroleum Operating CoWard8,39647537248
Dec 10, 2025Dr State Wise 37/12 FChevron U. S. A. Inc.Culberson4,86510934538
Dec 10, 2025Dr State Wise 37/12 AChevron U. S. A. Inc.Culberson5,19110934539
Dec 10, 2025Dr State Wise 37/12 CChevron U. S. A. Inc.Culberson4,81010934540
Dec 10, 2025Dr State Wise 37/12 GChevron U. S. A. Inc.Culberson4,85610934542
Nov 4, 2025Godzilla UnitGreenlake Energy Operating, LLCReeves8,10738941920
Nov 4, 2025Godzilla UnitGreenlake Energy Operating, LLCReeves8,11338941922
Nov 4, 2025Godzilla UnitGreenlake Energy Operating, LLCReeves8,12138941925
Nov 4, 2025Godzilla UnitGreenlake Energy Operating, LLCReeves8,11338941926
Nov 4, 2025Godzilla UnitGreenlake Energy Operating, LLCReeves8,12138941932
Oct 16, 2025Rainbow State 53-54-70 ATRP Operating LLCLoving8,57630137624
Oct 16, 2025Rainbow State 53-54-70 CTRP Operating LLCLoving8,56530137628
Oct 16, 2025Rainbow State 53-54-70 ETRP Operating LLCLoving8,57230137629
Oct 10, 2025Rick Ross State BS 11-2Greenlake Energy Operating, LLCReeves8,18138941886
Aug 19, 2025Paul WallGreenlake Energy Operating, LLCReeves8,00538941828
Aug 19, 2025Paul WallGreenlake Energy Operating, LLCReeves8,08538941829
Aug 18, 2025Dolly Varden 33-69TRP Operating LLCLoving8,51030137495
Aug 18, 2025Dolly Varden 33-69TRP Operating LLCLoving8,73730137496
Aug 18, 2025Dolly Varden 33-69TRP Operating LLCLoving8,51530137497
Aug 18, 2025Dolly Varden 33-69TRP Operating LLCLoving8,55530137498
Aug 14, 2025Corsair State Unit1920 Energy, LLCReeves6,40138941832
Jul 30, 2025Sunshine UL 29-0-39-3 DAnadarko E&P Onshore LLCLoving8,75730137473
Jul 21, 2025Lager 29-0-16-21 AAnadarko E&P Onshore LLCLoving8,66630137437
Jul 21, 2025Lager 29-0-16-21 BAnadarko E&P Onshore LLCLoving8,66930137438
Jul 21, 2025Lager 29-0-16-21 CAnadarko E&P Onshore LLCLoving8,68930137439

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/avalon, documented in the API reference.