Petrora

FORMATIONS · RRC WELLBORE FILE

Jackson

Reported as a top in 2,968 wells across 48 counties, at a median depth of 2,865 ft (690 to 6,537 ft in most wells). 133 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 →

2.97K
wells reporting a top
133
permitted in last 3 years
48
counties
2,865
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
Live Oak
710
1,436755–2,84681
Duval
319
2,1801,298–5,1035
Webb
260
690690–1,2104
Wharton
157
5,8075,157–6,9900
Polk
118
3,7502,719–4,7588
Jim Hogg
112
2,7231,978–4,1931
Bee
105
3,0601,937–4,6267
Refugio
98
2,6821,977–4,8669
Liberty
80
6,5423,675–9,7050
Austin
71
3,1152,960–3,4066
Jim Wells
71
5,6844,800–9,5002
Harris
69
6,4904,327–9,0530
Hardin
67
5,2442,560–7,9580
Jackson
64
5,8754,970–6,3010
Starr
62
2,640234–9,8380
Zapata
56
370140–1,9402
Goliad
50
3,7793,432–4,7370
Lavaca
40
3,9202,040–4,3650
Jasper
36
5,3024,260–8,3055
Colorado
33
4,6852,644–5,2360
Fort Bend
32
6,4765,973–7,5830
Kleberg
32
11,28511,285–12,9280
Montgomery
30
3,7533,250–4,1160
San Jacinto
29
3,100680–3,7780
Hidalgo
28
11,80011,273–15,7200
Jefferson
28
9,6058,268–10,4960
DE Witt
27
3,7343,164–4,2840
McMullen
24
1,8751,378–2,8700
Newton
22
5,4365,366–5,5940
Walker
22
2,7551,573–2,8191
Grimes
17
2,4951,541–3,5542
Brooks
15
10,0176,152–14,3890
Victoria
14
4,9054,030–6,1380
Tyler
11
4,2204,020–4,9800
Karnes
9
3,0302,306–3,5120
Nueces
9
10,1058,555–12,7200
Chambers
6
5,0684,942–10,8250
Orange
6
9,6428,505–10,2400
Waller
6
4,2602,904–5,1150
Washington
6
979430–2,2800
Calhoun
5
8,8108,220–9,5300

Operators

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

OperatorLast 3 yrsAll
Burlington Resources O & G Co LP69411
T-C Oil Company, LLC967
Killam Oil Co., Ltd.446
Enhanced Energy Partners Corp420
Troubadour Operating, LLC318
Paleo Oil Company LLC315
Merit Energy Company315
Paloma Operating, LLC34
Aurora Resources Corporation227
Royal Production Company, Inc.220
Arcadia Operating, LLC211
Dahco Operating, LLC28
Forza Operating, LLC25
Sue-Ann Operating, L.C.25
Davis Southern Operating Co LLC24
Ventex Operating Corp.23
Exxon Corp.155
EOG Resources, Inc.141
Unit Petroleum Company133
Cimarron Engineering, LLC116
Sandalwood Exploration, L.P.114
Shell Western E&P Inc.112
T-C Oil Company, LLC110
Nueces Oil Company15
Square Mile Energy, L.L.C.14

Recently permitted wells reporting the Jackson

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
Oct 2, 2026Clay Pasture -E- State UnitT-C Oil Company, LLCRefugio2,33039133235
Sep 21, 2026Waterflood Unit #1Exxon Corp.Austin3,07601500356
Aug 14, 2026Kiamu-Johnson (1-S)Davis Southern Operating Co LLCJasper5,30224130693
Aug 13, 2026Walton, J.C. 'A'Enhanced Energy Partners CorpAustin3,28801531079
Jun 26, 2026Ultra-Mobil FeeUltra Oil & Gas, Inc.Duval2,70013138234
Mar 20, 2026South Texas Children's HomeRoyal Production Company, Inc.Bee3,93002534002
Feb 26, 2026O'Connor-H-Clay Past-State UnitT-C Oil Company, LLCRefugio2,42139133186
Jan 5, 2026Rafter Two a-B AW Ulw ABurlington Resources O & G Co LPLive Oak81729736555
Dec 31, 2025Rafter Two-Gomillion Ulw ABurlington Resources O & G Co LPLive Oak82029736556
Dec 30, 2025McNeillSue-Ann Operating, L.C.Live Oak5,28029734489
Dec 29, 2025Rafter Two a-B Usw ABurlington Resources O & G Co LPLive Oak81929736552
Dec 29, 2025Rafter Two a-B Usw BBurlington Resources O & G Co LPLive Oak71829736553
Dec 29, 2025Rafter Two a-B Usw CBurlington Resources O & G Co LPLive Oak81829736554
Dec 19, 2025Braman -G-T-C Oil Company, LLCRefugio4,15039133258
Dec 5, 2025Meoc-Mellon-State UnitT-C Oil Company, LLCRefugio3,53039133247
Oct 31, 2025Dobie RanchPaloma Operating, LLCLive Oak5,28029736538
Oct 22, 2025Kirby-West "C"Shell Western E&P Inc.Polk3,78037330620
Oct 14, 2025Lopez, LauroMillennium Exploration Co. LLCJim Hogg2,80024732234
Oct 7, 2025Livingston Gas UnitBurlington Resources O & G Co LPLive Oak1,42829735597
Sep 18, 20251893 Oil & Gas, Ltd. Unit DBurlington Resources O & G Co LPLive Oak1,24629735573
Aug 26, 2025Rise SingerTexas Operating Partners LLCZapata3,80050536666
Aug 21, 2025Fort MerrillPaloma Operating, LLCLive Oak4,50029736501
Aug 1, 2025T.J. Tucker Unit No. 2Galloway Energy Co.Grimes4,56018530902
Jul 30, 2025White, P. E. -B-Killam Oil Co., Ltd.Duval1,28013139523
Jul 30, 2025Las ArenasSue-Ann Operating, L.C.Live Oak5,28029736227

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/jackson, documented in the API reference.