{
  "name": "Wyoming Oil & Gas Formations and Plays, Ranked by Well Count",
  "publisher": "Buckhead Energy",
  "url": "https://www.buckheadenergy.com/formations-wyoming",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "doi": "https://doi.org/10.5281/zenodo.21442884",
  "dataAsOf": "2026-08-23",
  "count": 23,
  "formations": [
    {
      "state": "WY",
      "formationSlug": "niobrara-mowry",
      "formationName": "Niobrara- Mowry",
      "wellCount": 76491,
      "activeOperators": 1572,
      "totalLateralFt": "200346045",
      "recentPermits24Mo": 70,
      "primaryCounties": "CAMPBELL, CONVERSE, NATRONA, JOHNSON, WESTON",
      "topOperators": [
        {
          "name": "EOG RESOURCES",
          "slug": "eog-resources-inc",
          "wells": 6887
        },
        {
          "name": "DEVON ENERGY PRODUCTION COMPANY",
          "slug": "devon-energy-production-co-lp",
          "wells": 3774
        },
        {
          "name": "WOLD ENERGY PARTNERS",
          "slug": null,
          "wells": 3661
        },
        {
          "name": "ANADARKO PETROLEUM",
          "slug": "anadarko-petroleum",
          "wells": 3187
        },
        {
          "name": "LANCE OIL & GAS COMPANY",
          "slug": "lance-oil-gas-company",
          "wells": 2402
        },
        {
          "name": "FDL OPERATING",
          "slug": "fdl-operating",
          "wells": 2325
        },
        {
          "name": "CONTANGO RESOURCES COMPANY",
          "slug": "contango-resources-llc",
          "wells": 2005
        },
        {
          "name": "WRC ENERGY LLC",
          "slug": null,
          "wells": 1953
        },
        {
          "name": "ANSCHUTZ EXPLORATION",
          "slug": "anschutz-exploration",
          "wells": 1632
        },
        {
          "name": "CARBON CREEK ENERGY",
          "slug": null,
          "wells": 1617
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "mesaverde-lance-lewis",
      "formationName": "Mesaverde-Lance-Lewis",
      "wellCount": 12094,
      "activeOperators": 346,
      "totalLateralFt": "24437430",
      "recentPermits24Mo": 1,
      "primaryCounties": "SWEETWATER, CARBON, FREMONT, CONVERSE, SUBLETTE",
      "topOperators": [
        {
          "name": "CROWHEART ENERGY",
          "slug": null,
          "wells": 3438
        },
        {
          "name": "WAMSUTTER E AND P LLC",
          "slug": null,
          "wells": 1117
        },
        {
          "name": "NOBLE ENERGY",
          "slug": "noble-energy-inc",
          "wells": 875
        },
        {
          "name": "BPX OPERATING COMPANY",
          "slug": "bpx-operating-company",
          "wells": 819
        },
        {
          "name": "SOUTHLAND ROYALTY COMPANY",
          "slug": "southland-royalty-company",
          "wells": 708
        },
        {
          "name": "DEVON ENERGY PRODUCTION COMPANY",
          "slug": "devon-energy-production-co-lp",
          "wells": 476
        },
        {
          "name": "WEXPRO COMPANY",
          "slug": null,
          "wells": 408
        },
        {
          "name": "ROCKIES RESOURCES HOLDINGS",
          "slug": "rockies-resources-holdings",
          "wells": 384
        },
        {
          "name": "AMOCO PRODUCTION COMPANY",
          "slug": "amoco-production-company",
          "wells": 337
        },
        {
          "name": "ANADARKO PETROLEUM",
          "slug": "anadarko-petroleum",
          "wells": 287
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "powder-river-basin",
      "formationName": "POWDER RIVER BASIN",
      "wellCount": 10932,
      "activeOperators": 1326,
      "totalLateralFt": "13331471",
      "recentPermits24Mo": 87,
      "primaryCounties": "JOHNSON, CAMPBELL, WESTON, CROOK, NIOBRARA",
      "topOperators": [
        {
          "name": "CARBON CREEK ENERGY",
          "slug": null,
          "wells": 1219
        },
        {
          "name": "EOG RESOURCES",
          "slug": "eog-resources-inc",
          "wells": 780
        },
        {
          "name": "ANSCHUTZ EXPLORATION",
          "slug": "anschutz-exploration",
          "wells": 525
        },
        {
          "name": "ATX ENERGY PARTNERS",
          "slug": null,
          "wells": 467
        },
        {
          "name": "DAVIS OIL COMPANY",
          "slug": "davis-oil-company",
          "wells": 357
        },
        {
          "name": "BALLARD PETROLEUM HOLDINGS",
          "slug": "ballard-petroleum-holdings",
          "wells": 254
        },
        {
          "name": "SEVEN SISTERS OIL & GAS",
          "slug": null,
          "wells": 241
        },
        {
          "name": "OSAGE PARTNERS",
          "slug": "osage-energy-resources",
          "wells": 206
        },
        {
          "name": "TRUE OIL",
          "slug": "true-oil",
          "wells": 176
        },
        {
          "name": "SAGE BUTTE PRB OPERATING, LLC",
          "slug": null,
          "wells": 123
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "muddy-j-sand",
      "formationName": "Muddy J Sand",
      "wellCount": 10091,
      "activeOperators": 233,
      "totalLateralFt": "16453242",
      "recentPermits24Mo": 2,
      "primaryCounties": "LARAMIE, GOSHEN, PLATTE",
      "topOperators": [
        {
          "name": "ANADARKO PETROLEUM",
          "slug": "anadarko-petroleum",
          "wells": 2691
        },
        {
          "name": "EOG RESOURCES",
          "slug": "eog-resources-inc",
          "wells": 1553
        },
        {
          "name": "WAVE PETROLEUM OPERATING",
          "slug": null,
          "wells": 979
        },
        {
          "name": "NORTH SILO RESOURCES LLC",
          "slug": null,
          "wells": 907
        },
        {
          "name": "SAMSON RESOURCES COMPANY",
          "slug": "samson-resources-company",
          "wells": 536
        },
        {
          "name": "LONGS PEAK RESOURCES",
          "slug": null,
          "wells": 512
        },
        {
          "name": "GUNGNIR OPERATING LLC",
          "slug": null,
          "wells": 381
        },
        {
          "name": "FH PETROLEUM",
          "slug": "fh-petroleum",
          "wells": 303
        },
        {
          "name": "KAISERFRANCIS OIL COMPANY",
          "slug": "kaiserfrancis-oil-company",
          "wells": 189
        },
        {
          "name": "ROCKIES HOLDINGS LLC",
          "slug": "rockies-resources-holdings",
          "wells": 146
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "mesaverde-lance",
      "formationName": "Mesaverde-Lance",
      "wellCount": 9538,
      "activeOperators": 207,
      "totalLateralFt": "11862557",
      "recentPermits24Mo": 9,
      "primaryCounties": "SUBLETTE, SWEETWATER, UINTA, TETON, FREMONT",
      "topOperators": [
        {
          "name": "PUREWEST RESOURCES INC",
          "slug": null,
          "wells": 3610
        },
        {
          "name": "JONAH ENERGY",
          "slug": null,
          "wells": 2914
        },
        {
          "name": "ULTRA RESOURCES",
          "slug": "ultra-production-company",
          "wells": 803
        },
        {
          "name": "SHELL OIL COMPANY",
          "slug": "shell-oil-company",
          "wells": 292
        },
        {
          "name": "ENCANA OIL & GAS",
          "slug": "encana-oil-gas",
          "wells": 262
        },
        {
          "name": "QEP ENERGY COMPANY",
          "slug": "qep-energy-company",
          "wells": 161
        },
        {
          "name": "EOG RESOURCES",
          "slug": "eog-resources-inc",
          "wells": 140
        },
        {
          "name": "SAURUS RESOURCES",
          "slug": null,
          "wells": 108
        },
        {
          "name": "PINEDALE ENERGY PARTNERS OPERATING",
          "slug": null,
          "wells": 91
        },
        {
          "name": "BPX OPERATING COMPANY",
          "slug": "bpx-operating-company",
          "wells": 75
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "big-horn-basin",
      "formationName": "Big Horn Basin",
      "wellCount": 7354,
      "activeOperators": 883,
      "totalLateralFt": "903615",
      "recentPermits24Mo": 3,
      "primaryCounties": "PARK, HOT SPRINGS, BIG HORN, WASHAKIE, SHERIDAN",
      "topOperators": [
        {
          "name": "MERIT ENERGY COMPANY",
          "slug": "merit-energy-company",
          "wells": 1628
        },
        {
          "name": "MARATHON OIL COMPANY",
          "slug": "marathon-oil-company",
          "wells": 645
        },
        {
          "name": "CONTANGO RESOURCES COMPANY",
          "slug": "contango-resources-llc",
          "wells": 478
        },
        {
          "name": "CITATION OIL & GAS",
          "slug": "citation-oil-gas-corp",
          "wells": 335
        },
        {
          "name": "BPX OPERATING COMPANY",
          "slug": "bpx-operating-company",
          "wells": 179
        },
        {
          "name": "BREITBURN OPERATING",
          "slug": "breitburn-operating-lp",
          "wells": 169
        },
        {
          "name": "CONOCOPHILLIPS COMPANY",
          "slug": "conocophillips-company",
          "wells": 133
        },
        {
          "name": "GRANITE CREEK ENERGY LLC",
          "slug": "granite-creek-energy-llc",
          "wells": 126
        },
        {
          "name": "BARETO ENERGY, LLC",
          "slug": null,
          "wells": 102
        },
        {
          "name": "VAQUERO BIG HORN",
          "slug": null,
          "wells": 100
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "hilliardbaxtermancos-niobrara",
      "formationName": "HilliardBaxterMancos-Niobrara",
      "wellCount": 7062,
      "activeOperators": 418,
      "totalLateralFt": "1438573",
      "recentPermits24Mo": 0,
      "primaryCounties": "SWEETWATER, SUBLETTE, LINCOLN, CARBON, UINTA",
      "topOperators": [
        {
          "name": "HILCORP ENERGY COMPANY",
          "slug": "hilcorp-energy-company",
          "wells": 1146
        },
        {
          "name": "EOG RESOURCES",
          "slug": "eog-resources-inc",
          "wells": 872
        },
        {
          "name": "URBAN OIL & GAS GROUP",
          "slug": "urban-oil-gas-group-llc",
          "wells": 599
        },
        {
          "name": "ANADARKO PETROLEUM",
          "slug": "anadarko-petroleum",
          "wells": 469
        },
        {
          "name": "WEXPRO COMPANY",
          "slug": null,
          "wells": 386
        },
        {
          "name": "WY BASIN OPERATING LLC",
          "slug": null,
          "wells": 316
        },
        {
          "name": "BREITBURN OPERATING",
          "slug": "breitburn-operating-lp",
          "wells": 281
        },
        {
          "name": "CONTANGO RESOURCES COMPANY",
          "slug": "contango-resources-llc",
          "wells": 218
        },
        {
          "name": "FDL OPERATING",
          "slug": "fdl-operating",
          "wells": 187
        },
        {
          "name": "CABOT OIL & GAS",
          "slug": null,
          "wells": 153
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "green-river-basin",
      "formationName": "Green River Basin",
      "wellCount": 3757,
      "activeOperators": 567,
      "totalLateralFt": "1160973",
      "recentPermits24Mo": 194,
      "primaryCounties": "CARBON, SUBLETTE, SWEETWATER, ALBANY, LINCOLN",
      "topOperators": [
        {
          "name": "URBAN OIL & GAS GROUP",
          "slug": "urban-oil-gas-group-llc",
          "wells": 301
        },
        {
          "name": "AMPLIFY ENERGY OPERATING",
          "slug": "amplify-energy-operating-llc",
          "wells": 267
        },
        {
          "name": "EOG RESOURCES",
          "slug": "eog-resources-inc",
          "wells": 202
        },
        {
          "name": "CHEVRON",
          "slug": "chevron",
          "wells": 156
        },
        {
          "name": "WEXPRO COMPANY",
          "slug": null,
          "wells": 144
        },
        {
          "name": "PUREWEST RESOURCES INC",
          "slug": null,
          "wells": 127
        },
        {
          "name": "HILCORP ENERGY COMPANY",
          "slug": "hilcorp-energy-company",
          "wells": 126
        },
        {
          "name": "MARATHON OIL COMPANY",
          "slug": "marathon-oil-company",
          "wells": 114
        },
        {
          "name": "CROWHEART ENERGY",
          "slug": null,
          "wells": 104
        },
        {
          "name": "ATLANTIC RICHFIELD COMPANY",
          "slug": "atlantic-richfield-company",
          "wells": 96
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "cretaceous-lower-tertiary",
      "formationName": "Cretaceous-Lower Tertiary",
      "wellCount": 3680,
      "activeOperators": 460,
      "totalLateralFt": "1127186",
      "recentPermits24Mo": 0,
      "primaryCounties": "FREMONT, NATRONA",
      "topOperators": [
        {
          "name": "CONTANGO RESOURCES COMPANY",
          "slug": "contango-resources-llc",
          "wells": 290
        },
        {
          "name": "AETHON ENERGY OPERATING",
          "slug": "aethon-energy-operating-llc",
          "wells": 226
        },
        {
          "name": "BROWN TOM",
          "slug": "brown-tom",
          "wells": 223
        },
        {
          "name": "HILCORP ENERGY COMPANY",
          "slug": "hilcorp-energy-company",
          "wells": 208
        },
        {
          "name": "ENCANA OIL & GAS",
          "slug": "encana-oil-gas",
          "wells": 164
        },
        {
          "name": "BURLINGTON RESOURCES OIL & GAS COMPANY",
          "slug": "burlington-resources-oil-gas-company",
          "wells": 114
        },
        {
          "name": "BILL BARRETT",
          "slug": "bill-barrett",
          "wells": 100
        },
        {
          "name": "OVINTIV USA INC",
          "slug": "ovintiv-usa-inc",
          "wells": 93
        },
        {
          "name": "ADAMAS ENERGY LLC",
          "slug": null,
          "wells": 88
        },
        {
          "name": "CITATION OIL & GAS",
          "slug": "citation-oil-gas-corp",
          "wells": 87
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "bighorn-basin",
      "formationName": "BIGHORN BASIN",
      "wellCount": 2669,
      "activeOperators": 610,
      "totalLateralFt": "299821",
      "recentPermits24Mo": 2,
      "primaryCounties": "HOT SPRINGS, BIG HORN, PARK, WASHAKIE, SHERIDAN",
      "topOperators": [
        {
          "name": "MERIT ENERGY COMPANY",
          "slug": "merit-energy-company",
          "wells": 406
        },
        {
          "name": "MARATHON OIL COMPANY",
          "slug": "marathon-oil-company",
          "wells": 271
        },
        {
          "name": "CONTANGO RESOURCES COMPANY",
          "slug": "contango-resources-llc",
          "wells": 127
        },
        {
          "name": "BREITBURN OPERATING",
          "slug": "breitburn-operating-lp",
          "wells": 63
        },
        {
          "name": "CITATION OIL & GAS",
          "slug": "citation-oil-gas-corp",
          "wells": 61
        },
        {
          "name": "BPX OPERATING COMPANY",
          "slug": "bpx-operating-company",
          "wells": 53
        },
        {
          "name": "ENDEAVOR ENERGY RESOURCES",
          "slug": "endeavor-energy-resources-lp",
          "wells": 34
        },
        {
          "name": "KCS MOUNTAIN RESOURCES",
          "slug": null,
          "wells": 33
        },
        {
          "name": "NATURAL GAS PROCESSING COMPANY",
          "slug": "natural-gas-processing-company",
          "wells": 33
        },
        {
          "name": "CORONADO OIL COMPANY",
          "slug": "coronado-oil-company",
          "wells": 32
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "greater-green-river-basin",
      "formationName": "GREATER GREEN RIVER BASIN",
      "wellCount": 2277,
      "activeOperators": 360,
      "totalLateralFt": "558992",
      "recentPermits24Mo": 51,
      "primaryCounties": "SWEETWATER, SUBLETTE, LINCOLN, CARBON, FREMONT",
      "topOperators": [
        {
          "name": "URBAN OIL & GAS GROUP",
          "slug": "urban-oil-gas-group-llc",
          "wells": 212
        },
        {
          "name": "EOG RESOURCES",
          "slug": "eog-resources-inc",
          "wells": 176
        },
        {
          "name": "HILCORP ENERGY COMPANY",
          "slug": "hilcorp-energy-company",
          "wells": 162
        },
        {
          "name": "CHEVRON",
          "slug": "chevron",
          "wells": 116
        },
        {
          "name": "BCEMACH",
          "slug": "bcemach",
          "wells": 103
        },
        {
          "name": "AMPLIFY ENERGY OPERATING",
          "slug": "amplify-energy-operating-llc",
          "wells": 95
        },
        {
          "name": "ATLANTIC RICHFIELD COMPANY",
          "slug": "atlantic-richfield-company",
          "wells": 90
        },
        {
          "name": "WEXPRO COMPANY",
          "slug": null,
          "wells": 82
        },
        {
          "name": "BPX OPERATING COMPANY",
          "slug": "bpx-operating-company",
          "wells": 53
        },
        {
          "name": "RICHARDSON OPERATING COMPANY",
          "slug": "richardson-resources-inc",
          "wells": 42
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "codell-niobrara",
      "formationName": "Codell-Niobrara",
      "wellCount": 1722,
      "activeOperators": 110,
      "totalLateralFt": "945960",
      "recentPermits24Mo": 0,
      "primaryCounties": "GOSHEN, PLATTE, LARAMIE, SWEETWATER",
      "topOperators": [
        {
          "name": "GUNGNIR OPERATING LLC",
          "slug": null,
          "wells": 996
        },
        {
          "name": "EME WYOMING LLC",
          "slug": null,
          "wells": 252
        },
        {
          "name": "BILL BARRETT",
          "slug": "bill-barrett",
          "wells": 55
        },
        {
          "name": "RKI EXPLORATION & PRODUCTION",
          "slug": "rki-exploration-production",
          "wells": 23
        },
        {
          "name": "HESPERUS ENERGY II LLC",
          "slug": null,
          "wells": 22
        },
        {
          "name": "PETROVALUES WY LLC",
          "slug": null,
          "wells": 21
        },
        {
          "name": "CHESAPEAKE ENERGY",
          "slug": "chesapeake-energy",
          "wells": 20
        },
        {
          "name": "LARGO EXPLORATION RESOURCES LLC",
          "slug": "largo-oil-company",
          "wells": 18
        },
        {
          "name": "DEVON ENERGY PRODUCTION COMPANY",
          "slug": "devon-energy-production-co-lp",
          "wells": 16
        },
        {
          "name": "HOEFLE GEOLOGIC COMPANY",
          "slug": null,
          "wells": 15
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "central-western-overthrust",
      "formationName": "Central Western Overthrust",
      "wellCount": 1243,
      "activeOperators": 261,
      "totalLateralFt": "528513",
      "recentPermits24Mo": 8,
      "primaryCounties": "LINCOLN, UINTA",
      "topOperators": [
        {
          "name": "BCEMACH",
          "slug": "bcemach",
          "wells": 92
        },
        {
          "name": "BPX OPERATING COMPANY",
          "slug": "bpx-operating-company",
          "wells": 92
        },
        {
          "name": "URBAN OIL & GAS GROUP",
          "slug": "urban-oil-gas-group-llc",
          "wells": 91
        },
        {
          "name": "HILCORP ENERGY COMPANY",
          "slug": "hilcorp-energy-company",
          "wells": 86
        },
        {
          "name": "CHEVRON",
          "slug": "chevron",
          "wells": 83
        },
        {
          "name": "EOG RESOURCES",
          "slug": "eog-resources-inc",
          "wells": 65
        },
        {
          "name": "NORTH SHORE EXPLORATION & PRODUCTION",
          "slug": null,
          "wells": 47
        },
        {
          "name": "ROCKY MOUNTAIN GAS",
          "slug": "rocky-mountain-gas",
          "wells": 30
        },
        {
          "name": "TEXACO EXPLORATION AND PRODUCTION",
          "slug": "texaco-exploration-and-production",
          "wells": 22
        },
        {
          "name": "SPIRE STORAGE WEST LLC",
          "slug": null,
          "wells": 20
        }
      ],
      "dataAsOf": "2026-08-23"
    },
    {
      "state": "WY",
      "formationSlug": "wind-river-basin",
      "formationName": "WIND RIVER BASIN",
      "wellCount": 1053,
      "activeOperators": 320,
      "totalLateralFt": "24572",
      "recentPermits24Mo": 0,
      "primaryCounties": "FREMONT, NATRONA, HOT SPRINGS, SWEETWATER",
      "topOperators": [
        {
          "name": "WESCO OPERATING",
          "slug": "wesco-operating",
          "wells": 82
        },
        {
          "name": "DENBURY ONSHORE",
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        },
        {
          "name": "WIND RIVER ENERGY",
          "slug": "wind-river-energy-inc",
          "wells": 51
        },
        {
          "name": "DEVON ENERGY PRODUCTION COMPANY",
          "slug": "devon-energy-production-co-lp",
          "wells": 39
        },
        {
          "name": "CITATION OIL & GAS",
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          "wells": 31
        },
        {
          "name": "BPX OPERATING COMPANY",
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        },
        {
          "name": "ATLANTIC INTERNATIONAL",
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        },
        {
          "name": "BEREN",
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        },
        {
          "name": "CONOCOPHILLIPS COMPANY",
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        },
        {
          "name": "AMERADA HESS",
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        {
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        {
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        {
          "name": "BISON IV OPERATING LLC",
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        {
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        {
          "name": "EXETER DRILLING COMPANY",
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        {
          "name": "SHELL OIL COMPANY",
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        {
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        {
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        {
          "name": "PRODUCTION SERVICE & EQUIPMENT",
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        {
          "name": "MARATHON OIL COMPANY",
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          "name": "METFUEL WYOMING",
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        {
          "name": "BLACK HILLS WYOMING GAS LLC",
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          "name": "ROGERS W P",
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        {
          "name": "CHS MCPHERSON REFINERY",
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          "name": "THE TOWER COMPANY",
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  ]
}