Petrora

FORMATIONS · RRC WELLBORE FILE

McKee

Reported as a top in 348 wells across 9 counties, at a median depth of 8,612 ft (5,399 to 10,681 ft in most wells). 8 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 →

348
wells reporting a top
8
permitted in last 3 years
9
counties
8,612
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
Winkler
100
9,9208,699–10,7995
Ector
77
8,0027,711–9,5651
Pecos
71
5,4525,010–8,4901
Andrews
55
8,6288,144–10,6810
Crane
26
7,4455,585–9,8731
Upton
10
10,3787,518–11,6060
Crockett
6
5,9225,797–6,8020

Operators

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

OperatorLast 3 yrsAll
Devon Energy Production Co, L.P.313
Ring Energy, Inc.22
Pennzoil Exploration & Prod. Co.110
MBX Operating LLC13
Formentera Operations LLC11
Phillips Petroleum Company042
Carlow Corp.014
Shell Western E&P Inc.013
Exxon Corp.012
Incline Energy010
Chisos Operating, Inc.07
Four C Oil & Gas Corp.07
Texaco E & P Inc.07
Shell Oil Company06
Arch Petroleum Inc.06
WTG Exploration05
Discovery Operating, Inc.05
Chevron U. S. A. Inc.04
Amoco Production Company04
Mobil Producing TX. & N.M. Inc.04
Prize Operating Company03
Pennzenergy Exp. & Prod., L.L.C.03
Clark, John M., Inc.03
BP America Production Company03
Cross Timbers Production Company03

Recently permitted wells reporting the McKee

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
Aug 17, 2026Atkins State '26'MBX Operating LLCPecos5,74037137030
Sep 2, 2025Lovett, H.E.Devon Energy Production Co, L.P.Winkler9,81749533300
Feb 20, 2025Waddell Bros + CoFormentera Operations LLCWinkler10,69649532403
Jan 23, 2025Henderson, M. F.Ring Energy, Inc.Crane9,37510334764
Jun 27, 2024Millard 'C' SWDRing Energy, Inc.Ector7,90913507252
Jun 11, 2024W.E. BairdDevon Energy Production Co, L.P.Winkler9,92049532852
Apr 4, 2024W.E. BairdDevon Energy Production Co, L.P.Winkler9,78749533299
Feb 26, 2024W.E. BairdPennzoil Exploration & Prod. Co.Winkler9,95049532745
Aug 30, 2023Baird, W. E.Pennzenergy Exp. & Prod., L.L.C.Winkler9,95249532782
Aug 10, 2023Waddell TR ABlackbeard Operating, LLCCrane5,99810310504
Jul 26, 2023Lovett-SinclairDevon Energy Production Co, L.P.Winkler9,92849532796
Apr 24, 2023Baird, W. E.Pennzoil Exploration & Prod. Co.Winkler9,86249532720
Oct 13, 2022W.E. BairdPennzoil Exploration & Prod. Co.Winkler9,82049532733
Aug 19, 2022CanonIncline EnergyPecos8,43837110265
Jul 25, 2022Millard-BPhillips Petroleum CompanyEctor8,02313507239
Apr 25, 2022CanonIncline EnergyPecos8,33037110286
Apr 20, 2022McCabeHelmerich & Payne, Inc.Winkler10,64149504328
Jul 26, 2021Lea, P.J., EtalStronghold Energy II Oper, LLCCrane7,95310333603
Jun 16, 2021Lea, P.J. EtalStronghold Energy II Oper, LLCCrane8,27810333512
Mar 10, 2021Keystone SWDOwl SWD Operating, LLCWinkler10,06049505784
Dec 12, 2020Lea, P.J., EtalStronghold Energy II Oper, LLCCrane7,45010334790
Jul 29, 2020Millard DPhillips Petroleum CompanyEctor7,97513534375
Dec 3, 2019Price, MaryMammoth Exploration LLCPecos5,26437137035
Sep 20, 2019Spruce GooseOXY USA WTP LPEctor8,45013538171
Jul 16, 2019Connell, W.E. NCT-7XTO Energy Inc.Ector8,12813501457

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/mckee, documented in the API reference.