Petrora

FORMATIONS · RRC WELLBORE FILE

Granite Wash

Reported as a top in 5,925 wells across 37 counties, at a median depth of 8,417 ft (2,456 to 11,808 ft in most wells). 17 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 →

5.93K
wells reporting a top
17
permitted in last 3 years
37
counties
8,417
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
Hemphill
1,662
10,9109,738–11,3735
Gray
1,210
2,7562,410–3,0151
Wheeler
982
12,0392,190–12,8740
Roberts
647
9,0598,138–9,8371
Carson
448
2,8402,558–3,1520
Moore
318
2,8982,384–3,4725
Potter
244
2,5072,102–3,0030
Hutchinson
154
4,4752,867–6,1121
Hartley
62
6,1064,468–6,6293
Pecos
47
5,0004,459–5,5600
Montague
35
3,7042,752–3,9780
Collingsworth
26
2,0781,919–2,2760
Oldham
26
7,0586,207–7,3040
Cooke
14
5,6894,272–6,4280
Clay
7
2,5902,536–2,9210
Donley
7
2,6852,562–3,5950
Ochiltree
5
8,8678,017–8,9571
Wilbarger
5
4,4103,298–5,4860

Operators

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

OperatorLast 3 yrsAll
Unit Petroleum Company4204
Scout Energy Management LLC4101
DDD Exploration, Inc.315
Laredo Petroleum, Inc.1141
Seek Energy, LLC18
J. W. Resources Inc.17
Roden Oil Company12
Pennzoil Petroleum Company11
Energon Oil, Inc.11
Forest Oil Corporation0219
Pioneer Natural Res. USA, Inc.0206
Gruy Petroleum Management Co.0168
Noble Energy Production, Inc.0166
Apache Corporation0165
Patina Oil & Gas Corporation0159
Mewbourne Oil Company0151
Texaco E & P Inc.0130
Samson Lone Star LP0121
Newfield Expl. Mid-Con. Inc0109
Cimarex Energy Co. of Colorado0107
Devon Energy Production Co, L.P.082
Phillips Petroleum Company062
Questar Expl. and Prod. Co.059
Cimarex Energy Co. of Colorado056
Chesapeake Operating, Inc.054

Recently permitted wells reporting the Granite Wash

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
Aug 10, 2026Young 2Roden Oil CompanyHemphill11,22221131761
Mar 6, 2026Elm Creek Ranch 46Laredo Petroleum, Inc.Hemphill11,08521134949
Apr 9, 2025Walker RanchDDD Exploration, Inc.Hartley6,10320530302
Feb 21, 2025Locke, AgathaPennzoil Petroleum CompanyRoberts6,68039331277
Jan 22, 2025PeacockEnergon Oil, Inc.Hutchinson4,54623332394
Dec 2, 2024Vollmert "C"Unit Petroleum CompanyHemphill9,73821134298
Nov 4, 2024Thompson EDDD Exploration, Inc.Hartley6,13220530424
Aug 23, 2024Isaacs EUnit Petroleum CompanyHemphill9,41321134295
Aug 8, 2024ReadScout Energy Management LLCMoore2,69434133669
Jul 26, 2024Vollmert 'C'Unit Petroleum CompanyHemphill9,45021134301
Jul 26, 2024ReadScout Energy Management LLCMoore2,56234133533
Jul 22, 2024ReadScout Energy Management LLCMoore2,55834133582
Jul 18, 2024ReadScout Energy Management LLCMoore2,55134133758
May 21, 2024Ruth 23Seek Energy, LLCGray5,00217932637
Mar 12, 2024Clem 'A'Unit Petroleum CompanyOchiltree8,86735732690
Feb 2, 2024Thompson EDDD Exploration, Inc.Hartley6,10320530422
Jan 9, 2024KateJ. W. Resources Inc.Moore4,58434133761
Sep 29, 2023ReadScout Energy Management LLCMoore2,43434133759
Sep 29, 2023ReadScout Energy Management LLCMoore2,48434133760
Sep 25, 2023FeeScout Energy Management LLCMoore2,38934133757
Sep 15, 2023RiftArrow Oil & Gas, LLCOldham7,74035930407
Sep 13, 2023MastersonScout Energy Management LLCMoore2,45034133755
Sep 13, 2023MastersonScout Energy Management LLCMoore2,36334133756
Sep 7, 2023FeeScout Energy Management LLCMoore2,47434133754
Aug 30, 2023BivinsScout Energy Management LLCPotter2,26237531939

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/granite-wash, documented in the API reference.