Petrora

FORMATIONS · RRC WELLBORE FILE

Santa Rosa

Reported as a top in 17,656 wells across 32 counties, at a median depth of 1,000 ft (635 to 1,426 ft in most wells). 2,396 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 →

17.7K
wells reporting a top
2,396
permitted in last 3 years
32
counties
1,000
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
6,242
1,000782–1,1851,069
Martin
4,790
1,156854–1,450773
Glasscock
1,853
840540–1,000186
Yoakum
1,325
1,100400–2,20086
Ector
856
1,264779–1,54241
Howard
778
748400–1,00092
Hockley
410
1,100378–2,05526
Borden
273
518330–1,00456
Andrews
212
1,222897–1,4960
Reagan
181
666500–82024
Cochran
142
1,8321,058–2,1690
Upton
99
691639–99711
Irion
96
450300–7004
Mitchell
87
300200–63918
Gaines
56
1,4901,220–1,7001
Garza
55
650363–1,1572
Dawson
41
1,213860–1,6704
Crane
36
712590–9240
Scurry
25
500350–1,7510
Winkler
24
688277–1,1680
Lubbock
19
1,3321,100–1,5110
Ward
19
63090–8210
Terry
12
1,9751,800–2,1003
Lynn
9
1,235892–1,3600
Crockett
5
650480–1,2570
Crosby
5
550429–6520

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.8973,516
Diamondback E&P LLC198919
Endeavor Energy Resources L.P.1551,566
XTO Energy Inc.1511,274
Chevron U. S. A. Inc.126770
Apache Corporation106503
Oxyrock Operating, LLC8080
COG Operating LLC69467
Highpeak Energy Holdings, LLC66248
SM Energy Company64247
Occidental Permian Ltd.56734
Riley Permian Operating Co, LLC41133
Civitas Permian Operating, LLC3636
Texland Petroleum, L.P.2145
DE IV Operating, LLC2086
Vital Energy, Inc.1818
Hannathon Petroleum II, LLC1734
Ring Energy, Inc.1671
Firebird Energy II LLC1515
Discovery Operating, Inc.1442
Saguaro Petroleum, LLC1417
Callon Petroleum Operating Co13259
DE Central Operating, LLC1313
Petroplex Energy Inc.1016
OXY USA Inc.9175

Recently permitted wells reporting the Santa Rosa

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
Sep 1, 2026Bennett Ranch UnitOccidental Permian Ltd.Yoakum1,10050131082
Aug 6, 2026Willard UnitOXY USA WTP LPYoakum23150136325
Aug 4, 2026Hooker, L.H.Texland Petroleum, L.P.Yoakum16050137623
Jul 24, 2026Bennett Ranch UnitOccidental Permian Ltd.Yoakum2,09650137551
Jul 6, 2026Denver UnitOccidental Permian Ltd.Yoakum1,10050101270
Jun 30, 2026Wasson Odc UnitOccidental Permian Ltd.Yoakum32050136624
Jun 1, 2026Wolf Ranches 40-45 B UnitHighpeak Energy Holdings, LLCBorden39103332847
May 15, 2026Bulldog BPermian Deep Rock Oil Co., LLCMidland95332946538
Apr 17, 2026Wolf Ranches 40-45 B UnitHighpeak Energy Holdings, LLCBorden39003332835
Apr 9, 2026Merlot 95-66 ADiamondback E&P LLCMartin1,27831747215
Apr 9, 2026Merlot 95-66 BDiamondback E&P LLCMartin1,26431747217
Apr 9, 2026Merlot 95-66 GDiamondback E&P LLCMartin1,26131747219
Apr 9, 2026Merlot 95-66 IDiamondback E&P LLCMartin1,26431747220
Mar 30, 2026Texas Ten-Tubb 40APioneer Natural Res. USA, Inc.Midland1,09132948227
Mar 20, 2026Willard UnitOXY USA WTP LPYoakum2,27650136493
Mar 19, 2026DobbyTexland Petroleum, L.P.Yoakum12550137680
Mar 18, 2026Millard -C-Ring Energy, Inc.Ector45013543829
Mar 17, 2026Feldman-Dameron HPioneer Natural Res. USA, Inc.Midland1,13732948198
Mar 16, 2026Elkin-Estes 34TTPioneer Natural Res. USA, Inc.Midland1,06232948191
Mar 9, 2026Jones 519O'Benco, Inc.Borden1,20003332353
Mar 9, 2026Pigg-Crespi 33LPioneer Natural Res. USA, Inc.Midland1,09932948188
Mar 3, 2026Gunsmoke 30-31Yukon Exploration Operating, LLCBorden72003332832
Mar 3, 2026Glass-O'Connor '34' UnitSaguaro Petroleum, LLCMitchell20033536118
Feb 27, 2026Coon-Bend 9GPioneer Natural Res. USA, Inc.Midland1,14432948116
Feb 25, 2026Battleground 30-7 IDiamondback E&P LLCMidland1,49632948172

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/santa-rosa, documented in the API reference.