Petrora

FORMATIONS · RRC WELLBORE FILE

Tannehill

Reported as a top in 3,753 wells across 28 counties, at a median depth of 1,521 ft (490 to 3,787 ft in most wells). 61 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 →

3.75K
wells reporting a top
61
permitted in last 3 years
28
counties
1,521
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
Shackelford
894
966393–1,4652
King
457
3,1302,693–3,7929
Stonewall
328
3,0862,873–3,6774
Knox
305
2,0971,694–2,5485
Wichita
289
520300–80010
Dickens
236
4,4893,988–5,0764
Throckmorton
222
696405–1,0541
Callahan
190
823300–1,5430
Jones
186
1,9061,610–2,4836
Baylor
141
1,3111,070–1,54014
Concho
105
1,208926–1,3500
Taylor
92
2,3031,759–3,0230
Nolan
62
3,6103,270–4,1202
Kent
50
4,2843,907–4,6891
Haskell
40
2,3441,456–2,5580
Menard
36
1,088938–1,3330
Foard
29
1,5111,382–3,1540
Coleman
22
1,254830–1,5381
Wilbarger
15
1,274764–1,6502
Eastland
13
358205–7180
Cottle
12
3,0052,955–3,1100
Fisher
10
3,1202,842–4,3930
Clay
7
334250–3730
Young
5
500488–5200

Operators

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

OperatorLast 3 yrsAll
W.T. Waggoner Estate, Inc.1128
Newport Operating, LLC7121
Waggoner Operating, L.L.C.55
Sojourner Drlg. Corp.442
Dreyfus, Louis Natural Gas Corp35
Medders Oil Company, Inc.2101
Gunn Oil Company230
Ics Energy LLC28
Burnett Oil Co., Inc.26
Brower Oil & Gas Co., Inc.24
Hadaway Consult and Engineer,llc22
Vertox LLC170
Halliburton Operating Company117
R2Q Operating LLC111
Bluff Creek Petroleum, LLC110
Canan Mowrey Operating, LLC19
Salida Exploration, LLC17
Rog Enterprises, LLC13
Subsea Operating Co.13
NBX Energy, LLC13
JQL Energy, LLC13
Stone, Gregory W.12
Craaybeek's Pro Energy, L.L.C.12
Texas Royalty Corp.11
VX Operating, LLC11

Recently permitted wells reporting the Tannehill

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
Oct 20, 2026Pitchfork-Toreador LSDreyfus, Louis Natural Gas CorpDickens3,88012530681
May 12, 2026Pitchfork-Toreador BHDreyfus, Louis Natural Gas CorpDickens3,87212530685
May 5, 2026Waggoner DnthW.T. Waggoner Estate, Inc.Baylor1,02302331771
Feb 18, 2026PearlsHalliburton Operating CompanyKing3,42026933067
Dec 12, 2025Pace ANewport Operating, LLCWichita64048546421
Dec 8, 2025Waggoner EroWaggoner Operating, L.L.C.Baylor89402331848
Oct 27, 2025Nail '120'Bluff Creek Petroleum, LLCShackelford1,40441739826
Sep 18, 2025SimpsonSalida Exploration, LLCKing3,39226933064
Aug 22, 2025Waggoner DntwWaggoner Operating, L.L.C.Baylor1,25502331841
Aug 15, 2025East Shore UnitWalter Exploration CompanyNolan3,70035333762
Aug 11, 2025First National CompanyNewport Operating, LLCWichita64648546412
Aug 6, 2025Sixes PickGunn Oil CompanyKing3,25426933063
Jul 28, 2025Waggoner DntjW.T. Waggoner Estate, Inc.Baylor1,18902331805
Jul 28, 2025Waggoner DntpW.T. Waggoner Estate, Inc.Baylor1,40602331822
Jul 23, 2025Sallie LeeGunn Oil CompanyKing3,11026933059
Jul 11, 2025Waggoner DS-East ShallowW.T. Waggoner Estate, Inc.Baylor1,03402331765
Jun 13, 2025Pitchfork OtoeCanan Mowrey Operating, LLCDickens4,16612531428
Jun 12, 2025Pitchfork-Toreador LHDreyfus, Louis Natural Gas CorpDickens3,96512530667
May 27, 2025Waggoner DntaWaggoner Operating, L.L.C.Baylor1,19902331831
Apr 14, 2025Waggoner DntkWaggoner Operating, L.L.C.Baylor1,18702331828
Apr 3, 2025Matthews 23Subsea Operating Co.Throckmorton1,07344736859
Apr 2, 2025Roller EstateRog Enterprises, LLCWichita30048546407
Mar 28, 2025Waggoner DN-WestWaggoner Operating, L.L.C.Baylor1,17802331824
Mar 12, 2025Pitchfork TtttMedders Oil Company, Inc.King3,77726933051
Jan 30, 2025LCRBrower Oil & Gas Co., Inc.Knox1,57727532381

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/tannehill, documented in the API reference.