Petrora

FORMATIONS · RRC WELLBORE FILE

Clear Fork

Reported as a top in 56,000 wells across 62 counties, at a median depth of 5,596 ft (2,690 to 6,959 ft in most wells). 5,038 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 →

56K
wells reporting a top
5,038
permitted in last 3 years
62
counties
5,596
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
Midland
8,594
6,8286,108–7,2351,192
Howard
5,315
4,5702,892–5,567427
Ector
4,633
5,4725,291–7,17787
Andrews
4,620
6,4845,566–7,065241
Martin
3,610
6,3385,358–6,790955
Glasscock
3,120
5,4543,680–6,123256
Reagan
2,985
5,0153,673–5,794642
Gaines
2,888
6,3005,954–6,71914
Mitchell
2,669
2,4752,366–2,80640
Irion
2,304
3,2302,407–4,001115
Upton
2,291
6,5315,900–7,111378
Scurry
2,065
2,6622,380–3,10053
Crane
1,441
3,9893,511–4,809180
Yoakum
1,088
6,2905,970–6,76220
Crosby
969
4,1153,832–4,3052
Crockett
907
2,8391,799–3,9571
Hockley
825
6,0745,748–6,76027
Winkler
769
5,2785,018–5,82771
Borden
701
4,7573,200–6,029110
Terry
683
6,3806,112–6,84728
Lubbock
563
5,0934,487–5,65014
Ward
454
4,8704,405–5,61728
Pecos
373
3,0372,308–3,8723
Dawson
371
5,7804,839–6,592111
Sterling
337
2,8342,115–3,7774
Garza
282
3,1532,520–3,9637
Hale
246
5,3154,662–5,7422
Tom Green
216
1,231970–3,2948
Kent
205
2,1142,033–2,53120
Schleicher
177
2,3211,300–3,6521
Lamb
97
5,3554,959–5,9520
Cochran
22
6,4185,500–7,1500
Sherman
22
1,006229–1,3840
Coke
21
1,242877–2,0520
Cottle
17
705490–9400
Sutton
16
2,8272,258–3,0180
Dickens
12
1,9821,757–2,3841
Nolan
12
1,2181,140–1,6660
Potter
12
2,2181,482–2,5120
Moore
9
1,8161,204–1,8590
Foard
7
495407–5510
Motley
7
1,6631,632–2,3540
Terrell
7
3,3962,635–3,5030
Fisher
5
1,312857–1,4920
King
5
614424–6280

Operators

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

OperatorLast 3 yrsAll
Pioneer Natural Res. USA, Inc.1,0203,452
Diamondback E&P LLC6131,951
Endeavor Energy Resources L.P.2351,493
XTO Energy Inc.1712,063
Apache Corporation1641,532
Blackbeard Operating, LLC152802
Ovintiv USA Inc.152387
DE IV Operating, LLC151264
DE IV Operating, LLC149149
Highpeak Energy Holdings, LLC135388
Civitas Permian Operating, LLC134134
Chevron U. S. A. Inc.1291,543
Surge Operating, LLC120711
COG Operating LLC101843
Oxyrock Operating, LLC991,361
SM Energy Company96467
Oxyrock Operating, LLC9696
Summit Petroleum LLC82259
Triple Crown Resources, LLC70177
Utoco, Ltd.67584
OXY USA WTP LP58392
Texland Petroleum, L.P.46193
Kinder Morgan Production Co LLC44651
Vital Energy, Inc.4362
Basin Oil & Gas Operating, LLC4242

Recently permitted wells reporting the Clear Fork

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
Oct 19, 2026Young-HankinsYoung, Marshall R., Oil CompanyHockley6,04021934444
Oct 9, 2026Tubb 39Surge Operating, LLCHoward4,50022736348
Oct 2, 2026Edwards, C. W., et ALPitts Energy Co.Ward4,55047533893
Sep 27, 2026Keystone Cattle Co. AWhiting Oil and Gas CorporationWinkler5,57849533339
Sep 15, 2026Edwards, C. W. et ALPitts Energy Co.Ward4,61847533833
Sep 14, 2026Logsdon, Etal -D-Texland Petroleum, L.P.Andrews6,56500305265
Sep 14, 2026Gilded LadyBlackbeard Operating, LLCWinkler5,45749534047
Aug 31, 2026Waddell, W. N. EtalBurlington Res O & G Co-MidlandCrane3,93210334611
Aug 24, 2026Anton-Irish Clearfork UnitOccidental Permian Ltd.Hale5,35518930009
Aug 21, 2026Fullerton Clearfork UnitXTO Energy Inc.Andrews6,64300346561
Aug 21, 2026Hatton, Elmer Hoover Estate "O"Scout Energy Management LLCCrockett99210532307
Aug 19, 2026Midland 'AP' FeeTexaco E & P Inc.Midland7,12532933061
Aug 18, 2026Logsdon, Etal -B-Texland Petroleum, L.P.Andrews6,57400344975
Aug 17, 2026Anton-Irish Clearfork UnitOccidental Permian Ltd.Hale4,56718930503
Aug 17, 2026Edwards 4Williams Oil CompanyWard4,60047535276
Aug 10, 2026Edwards, C. W., et ALPitts Energy Co.Ward4,59047510041
Aug 4, 2026Hooker, L.H.Texland Petroleum, L.P.Yoakum7,57050131143
Aug 4, 2026Powell, Mattie -A-Texland Petroleum, L.P.Yoakum6,66050131461
Aug 4, 2026Powell, Mattie -A-Texland Petroleum, L.P.Yoakum6,70750131743
Aug 4, 2026Hooker, L.H.Texland Petroleum, L.P.Yoakum6,71150137623
Jul 10, 2026Syndicate Fee AHCW Exploration, Inc.Crane3,35410332795
Jul 10, 2026Jno. Edwards et al 'B'Pitts Energy Co.Ward4,64147533958
Jul 10, 2026Edwards, Jno. et al 'B'Pitts Energy Co.Ward4,64147533959
Jul 10, 2026Edwards, Jno. et al 'B'Pitts Energy Co.Ward4,64547534003
Jul 2, 2026State-WaltonPennzenergy Exp. & Prod., L.L.C.Winkler5,37549505173

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/clearfork, documented in the API reference.