Petrora

FORMATIONS · RRC WELLBORE FILE

Lamar

Reported as a top in 2,600 wells across 12 counties, at a median depth of 4,716 ft (2,393 to 5,145 ft in most wells). 355 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 →

2.6K
wells reporting a top
355
permitted in last 3 years
12
counties
4,716
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
Reeves
860
4,7422,800–5,180150
Ward
647
4,8544,696–5,12453
Culberson
458
2,3661,423–2,547102
Loving
440
4,5583,355–4,95533
Pecos
129
4,8284,578–5,2432
Winkler
58
5,0564,869–5,14915

Operators

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

OperatorLast 3 yrsAll
Permian Resources Operating, LLC110113
Chevron U. S. A. Inc.86369
EOG Resources, Inc.2728
Vital Energy, Inc.1717
Cimarex Energy Co. of Colorado1449
Greenlake Energy Operating, LLC1429
Jetta Operating Company, Inc.1196
Permian Resources Operating, LLC1018
Diamondback E&P LLC856
U.S. Energy Development Corp812
Tap Rock Operating, LLC88
Petro-Hunt Permian, LLC610
Brigham Resources Operating, LLC56
Callon Petroleum Operating Co450
Vital Energy, Inc.353
Earthstone Operating, LLC310
Alchemist Energy, LLC33
Anadarko E&P Onshore LLC33
Pbex-MCM Operating, LLC33
Pitts Energy Co.258
1920 Energy, LLC22
BPX Operating Company22
NGL Water Solutions Permian, LLC18
Targa Delaware LLC11
Callon (Permian) LLC11

Recently permitted wells reporting the Lamar

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
Apr 27, 2026AD Hawk State a 65-64Greenlake Energy Operating, LLCLoving4,45030137435
Apr 21, 2026GoldilocksGreenlake Energy Operating, LLCLoving4,29430137818
Apr 1, 2026Jim Ed UnitPitts Energy Co.Ward4,86447535601
Mar 31, 2026Jim Ed UnitPitts Energy Co.Ward4,83347533861
Mar 2, 2026Corbets A5Callon Petroleum Operating CoWard5,09147537248
Feb 27, 2026Remora West CPermian Resources Operating, LLCReeves5,03838942033
Feb 27, 2026Remora West DPermian Resources Operating, LLCReeves5,03938942034
Feb 27, 2026Remora West GPermian Resources Operating, LLCReeves5,03338942035
Feb 27, 2026Remora West HPermian Resources Operating, LLCReeves5,03238942036
Feb 27, 2026Remora West APermian Resources Operating, LLCReeves5,07338942039
Feb 27, 2026Remora West EPermian Resources Operating, LLCReeves5,07238942041
Feb 27, 2026Remora West FPermian Resources Operating, LLCReeves5,06838942042
Feb 27, 2026Remora West IPermian Resources Operating, LLCReeves5,07138942043
Feb 25, 2026Guthrie APermian Resources Operating, LLCReeves5,13038941475
Feb 25, 2026Guthrie BPermian Resources Operating, LLCReeves5,14238941476
Feb 25, 2026Guthrie State EPermian Resources Operating, LLCReeves5,10838941477
Feb 25, 2026Guthrie State FPermian Resources Operating, LLCReeves5,11538941480
Feb 25, 2026Guthrie State GPermian Resources Operating, LLCReeves5,10438941481
Feb 25, 2026Guthrie CPermian Resources Operating, LLCReeves5,13938941482
Feb 25, 2026Guthrie State DPermian Resources Operating, LLCReeves5,12438941483
Feb 25, 2026Remora East APermian Resources Operating, LLCReeves5,07338942021
Feb 25, 2026Remora East JPermian Resources Operating, LLCReeves5,06038942030
Feb 25, 2026Remora East KPermian Resources Operating, LLCReeves5,04438942031
Dec 10, 2025Dr State Wise 37/12 BChevron U. S. A. Inc.Culberson1,22210934536
Dec 10, 2025Dr State Wise 37/12 FChevron U. S. A. Inc.Culberson1,21310934538

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/lamar, documented in the API reference.