Petrora

FORMATIONS · RRC WELLBORE FILE

Seven Rivers

Reported as a top in 26,150 wells across 33 counties, at a median depth of 2,716 ft (1,201 to 3,300 ft in most wells). 2,644 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 →

26.2K
wells reporting a top
2,644
permitted in last 3 years
33
counties
2,716
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
6,474
2,9932,589–3,2761,069
Howard
3,693
1,8131,255–2,119221
Andrews
2,912
3,1262,988–3,450202
Glasscock
2,180
2,1321,300–2,519213
Pecos
2,084
986704–1,650202
Gaines
1,562
3,1403,012–3,510115
Ector
1,503
3,0182,696–3,97058
Crane
1,171
1,8461,665–2,426272
Ward
811
2,6102,169–2,93817
Winkler
710
2,7602,560–3,01957
Crockett
388
1,252809–1,5621
Mitchell
354
765720–1,22436
Sterling
318
1,300993–1,5004
Martin
294
2,6922,350–3,27955
Yoakum
283
3,2583,072–3,5721
Hockley
278
2,9862,792–3,0860
Reagan
252
1,9161,560–2,39238
Upton
245
1,9301,447–3,79513
Cochran
144
2,8462,808–3,1153
Scurry
132
1,010764–1,1111
Terry
112
3,2783,094–3,4306
Borden
94
1,4121,259–2,00749
Irion
77
938492–1,2830
Dawson
46
3,1282,284–3,20511
Garza
13
1,5301,409–1,6150
Lubbock
9
2,2752,162–2,4850

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.5342,438
Blackbeard Operating, LLC244839
Marathon Oil Company1881,467
Diamondback E&P LLC148888
XTO Energy Inc.1301,577
Highpeak Energy Holdings, LLC129342
Chevron U. S. A. Inc.128953
Apache Corporation117718
OXY USA WTP LP114404
Endeavor Energy Resources L.P.95933
COG Operating LLC81627
Utoco, Ltd.72574
Oxyrock Operating, LLC5757
DE IV Operating, LLC4248
Vital Energy, Inc.3959
Bayswater Operating Company LLC36155
SM Energy Company32389
Ring Energy, Inc.32282
Basin Oil & Gas Operating, LLC3036
Occidental Permian Ltd.26559
Sabalo II Operating, LLC2323
OXY USA WTP LP20115
Civitas Permian Operating, LLC1818
Hannathon Petroleum II, LLC1734
Discovery Operating, Inc.14107

Recently permitted wells reporting the Seven Rivers

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
Oct 21, 2026West Seminole SA UnitOXY USA WTP LPGaines3,45216538557
Oct 21, 2026West Seminole SA UnitOXY USA WTP LPGaines3,39916538559
Sep 25, 2026West Seminole SA UnitOXY USA WTP LPGaines3,34316538405
Sep 25, 2026West Seminole SA UnitOXY USA WTP LPGaines3,34916538446
Sep 24, 2026West Seminole SA UnitOXY USA WTP LPGaines3,34216538299
Aug 31, 2026Waddell, W. N. EtalBurlington Res O & G Co-MidlandCrane1,71510334611
Aug 21, 2026Fullerton Clearfork UnitXTO Energy Inc.Andrews3,13400346561
Aug 20, 2026Seminole San Andres UnitOXY USA Inc.Gaines3,44116532141
Aug 19, 2026West Seminole SA UnitOXY USA WTP LPGaines3,33016538298
Aug 19, 2026Yates Filed UnitMarathon Oil CompanyPecos1,10137133696
Aug 13, 2026Edwards, Jack -L-Pitts Energy Co.Ward2,21347533646
Aug 12, 2026Seminole San Andres UnitOXY USA Inc.Gaines3,35616536958
Aug 10, 2026Edwards, C. W. et ALPitts Energy Co.Ward2,29847510042
Aug 5, 2026Seminole San Andres UnitOXY USA Inc.Gaines3,41016538014
Jul 23, 2026Koehn SWDGoodnight Midstream Permian, LLCWard2,21047537710
Jul 10, 2026Seminole San Andres UnitOXY USA Inc.Gaines3,43816531452
Jul 9, 2026West Seminole SA UnitOXY USA WTP LPGaines3,32316538866
Jul 2, 2026Yates Field UnitMarathon Oil CompanyPecos83337132317
Jul 2, 2026State-WaltonPennzenergy Exp. & Prod., L.L.C.Winkler2,56649505173
Jun 30, 2026Yates Field UnitMarathon Oil CompanyPecos66737132864
Jun 1, 2026Wolf Ranches 40-45 B UnitHighpeak Energy Holdings, LLCBorden1,41303332847
Jun 1, 2026Billy BonesBlackbeard Operating, LLCCrane1,97410337314
May 29, 2026Seminole San Andres UnitOXY USA Inc.Gaines3,34216532021
May 28, 2026Seminole San Andres UnitOXY USA Inc.Gaines3,42016538629
May 22, 2026Yates Field UnitMarathon Oil CompanyPecos78437132639

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/seven-rivers, documented in the API reference.