{
  "name": "Ohio Oil & Gas Formations and Plays, Ranked by Well Count",
  "publisher": "Buckhead Energy",
  "url": "https://www.buckheadenergy.com/formations-ohio",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "doi": "https://doi.org/10.5281/zenodo.21442884",
  "dataAsOf": "2026-09-18",
  "provenance": {
    "status": "dated",
    "refreshDate": "2026-09-18",
    "refreshLabel": "2026-09-18",
    "stale": false,
    "context": "Stored source refresh: 2026-09-18.",
    "selection": "Formation/play groups require at least 25 recorded wells and a known operator; the directory shows at most 50 groups ranked by well count. Operator counts reflect distinct recorded operator names, not verified current operations. Permit counts use the preceding 24 months at summary refresh. Grouping can represent a formation, play or basin; it is not an inventory of every geological formation.",
    "source": {
      "name": "Ohio Department of Natural Resources, Division of Oil and Gas Resources Management",
      "url": "https://ohiodnr.gov/wps/portal/gov/odnr/business-and-industry/energy-resources/oil-and-gas-wells",
      "abbr": "ODNR DOGRM"
    },
    "description": "Stored source refresh: 2026-09-18. Formation/play groups require at least 25 recorded wells and a known operator; the directory shows at most 50 groups ranked by well count. Operator counts reflect distinct recorded operator names, not verified current operations. Permit counts use the preceding 24 months at summary refresh. Grouping can represent a formation, play or basin; it is not an inventory of every geological formation. This is a capped directory of stored records, not a complete statewide count.",
    "answerContext": "Stored source refresh: 2026-09-18. These are limited stored records; reporting windows are evaluated at source refresh."
  },
  "count": 10,
  "formations": [
    {
      "state": "OH",
      "formationSlug": "utica",
      "formationName": "Utica",
      "wellCount": 109017,
      "activeOperators": 7807,
      "totalLateralFt": "28183928",
      "recentPermits24Mo": 113,
      "primaryCounties": "WASHINGTON, MONROE, MUSKINGUM, LICKING, COSHOCTON",
      "topOperators": [
        {
          "name": "OWS ACQUISITION CO LLC",
          "slug": "ows-acquisition-co-llc",
          "wells": 5606
        },
        {
          "name": "DIVERSIFIED PRODUCTION LLC",
          "slug": "diversified-production-llc",
          "wells": 4684
        },
        {
          "name": "ECO POWER CRYPTO LLC",
          "slug": "eco-power-crypto-llc",
          "wells": 2262
        },
        {
          "name": "OXFORD OIL",
          "slug": "oxford-oil",
          "wells": 1430
        },
        {
          "name": "KENOIL",
          "slug": "kenoil",
          "wells": 1349
        },
        {
          "name": "NORTHWOOD ENERGY",
          "slug": "northwood-energy",
          "wells": 1301
        },
        {
          "name": "COLUMBIA GAS TRANSMISSION",
          "slug": "columbia-gas-transmission",
          "wells": 1262
        },
        {
          "name": "PETROX",
          "slug": "petrox",
          "wells": 1175
        },
        {
          "name": "PIN OAK ENERGY PARTNERS",
          "slug": "pin-oak-energy-partners",
          "wells": 1147
        },
        {
          "name": "STONEBRIDGE OPERATING COMPANY",
          "slug": "stonebridge-operating-company",
          "wells": 1069
        }
      ],
      "dataAsOf": "2026-09-18"
    },
    {
      "state": "OH",
      "formationSlug": "medina-clinton-tuscarora",
      "formationName": "Medina-Clinton-Tuscarora",
      "wellCount": 10158,
      "activeOperators": 866,
      "totalLateralFt": "163459",
      "recentPermits24Mo": 0,
      "primaryCounties": "HOCKING, PERRY, FAIRFIELD, VINTON, ASHLAND",
      "topOperators": [
        {
          "name": "COLUMBIA GAS TRANSMISSION",
          "slug": "columbia-gas-transmission",
          "wells": 1486
        },
        {
          "name": "KILBARGER INVESTMENTS",
          "slug": "kilbarger-investments",
          "wells": 384
        },
        {
          "name": "HUFFMANBOWERS",
          "slug": "huffmanbowers",
          "wells": 371
        },
        {
          "name": "QUAKER STATE OIL REF",
          "slug": "quaker-state-oil-ref",
          "wells": 325
        },
        {
          "name": "OXFORD OIL",
          "slug": "oxford-oil",
          "wells": 272
        },
        {
          "name": "KENOIL",
          "slug": "kenoil",
          "wells": 271
        },
        {
          "name": "4M ENTERPRISE",
          "slug": "4m-enterprise",
          "wells": 214
        },
        {
          "name": "J D DRILLING COMPANY",
          "slug": "j-d-drilling-company",
          "wells": 155
        },
        {
          "name": "R C POLING",
          "slug": "r-c-poling",
          "wells": 154
        },
        {
          "name": "BELL OIL",
          "slug": "bell-oil",
          "wells": 139
        }
      ],
      "dataAsOf": "2026-09-18"
    },
    {
      "state": "OH",
      "formationSlug": "cincinnati-arch",
      "formationName": "Cincinnati Arch",
      "wellCount": 1862,
      "activeOperators": 372,
      "totalLateralFt": "12885",
      "recentPermits24Mo": 1,
      "primaryCounties": "HANCOCK, ALLEN, AUGLAIZE, WOOD, SENECA",
      "topOperators": [
        {
          "name": "LANDOWNER GRANT PROGRAM 2005",
          "slug": "landowner-grant-program-2005",
          "wells": 102
        },
        {
          "name": "FRANTZ ENTERPRISES",
          "slug": "frantz-enterprises",
          "wells": 83
        },
        {
          "name": "NIESET LAWRENCE & CHRIST",
          "slug": "nieset-lawrence-christ",
          "wells": 75
        },
        {
          "name": "J & J OPERATING",
          "slug": "j-j-operating",
          "wells": 55
        },
        {
          "name": "A S ENERGY",
          "slug": "a-s-energy",
          "wells": 49
        },
        {
          "name": "ROCKWELL OIL COMPANY",
          "slug": "rockwell-energy",
          "wells": 48
        },
        {
          "name": "BAKERWELL SERV RIGS",
          "slug": "bakerwell-serv-rigs",
          "wells": 42
        },
        {
          "name": "BELDEN AND BLAKE CORP DBA WARD LAKE ENERGY",
          "slug": "belden-and-blake-corp-dba-ward-lake-energy",
          "wells": 41
        },
        {
          "name": "HARMEYER RICHARD G",
          "slug": null,
          "wells": 39
        },
        {
          "name": "SECOND OIL",
          "slug": "second-oil",
          "wells": 39
        }
      ],
      "dataAsOf": "2026-09-18"
    },
    {
      "state": "OH",
      "formationSlug": "appalachian-basin-eastern-overthrust-area",
      "formationName": "Appalachian Basin - (Eastern Overthrust Area)",
      "wellCount": 1041,
      "activeOperators": 32,
      "totalLateralFt": "9388136",
      "recentPermits24Mo": 377,
      "primaryCounties": "MONROE, BELMONT, HARRISON, COLUMBIANA, CARROLL",
      "topOperators": [
        {
          "name": "ASCENT RESOURCESMARCELLUS",
          "slug": "ascent-resourcesmarcellus",
          "wells": 274
        },
        {
          "name": "EOG OHIO, LLC",
          "slug": "eog-ohio-llc",
          "wells": 244
        },
        {
          "name": "GULFPORT APPALACHIA",
          "slug": "gulfport-appalachia",
          "wells": 141
        },
        {
          "name": "EOG RESOURCES",
          "slug": "eog-resources-inc",
          "wells": 116
        },
        {
          "name": "HILCORP ENERGY COMPANY",
          "slug": "hilcorp-energy-company",
          "wells": 82
        },
        {
          "name": "EXPAND OPERATING LLC",
          "slug": "expand-operating-llc",
          "wells": 55
        },
        {
          "name": "RICE DRILLING B",
          "slug": "rice-drilling-b",
          "wells": 32
        },
        {
          "name": "INR OHIO LLC",
          "slug": "inr-ohio-llc",
          "wells": 24
        },
        {
          "name": "DIVERSIFIED PRODUCTION LLC",
          "slug": "diversified-production-llc",
          "wells": 11
        },
        {
          "name": "GRENADIER ENERGY III, LLC",
          "slug": "grenadier-energy-iii-llc",
          "wells": 8
        }
      ],
      "dataAsOf": "2026-09-18"
    },
    {
      "state": "OH",
      "formationSlug": "appalachian-basin",
      "formationName": "Appalachian Basin",
      "wellCount": 791,
      "activeOperators": 156,
      "totalLateralFt": "2891047",
      "recentPermits24Mo": 174,
      "primaryCounties": "MORGAN, NOBLE, GUERNSEY, PICKAWAY, MEDINA",
      "topOperators": [
        {
          "name": "ASCENT RESOURCESMARCELLUS",
          "slug": "ascent-resourcesmarcellus",
          "wells": 85
        },
        {
          "name": "INR OHIO LLC",
          "slug": "inr-ohio-llc",
          "wells": 78
        },
        {
          "name": "EOG OHIO, LLC",
          "slug": "eog-ohio-llc",
          "wells": 73
        },
        {
          "name": "EOG RESOURCES",
          "slug": "eog-resources-inc",
          "wells": 65
        },
        {
          "name": "HOCKING HILLS ENERGY AND WELL SERVICE LLC",
          "slug": "hocking-hills-energy-and-well-service-llc",
          "wells": 28
        },
        {
          "name": "HOUGHTON INVESTMENTS",
          "slug": "houghton-investments",
          "wells": 20
        },
        {
          "name": "CHUCK HENRY ENERGY",
          "slug": "chuck-henry-energy",
          "wells": 16
        },
        {
          "name": "OHIO ENERGY ASSETS",
          "slug": "ohio-energy-assets",
          "wells": 16
        },
        {
          "name": "MFC DRILLING",
          "slug": "mfc-drilling",
          "wells": 15
        },
        {
          "name": "NEOS ENERGY LLC",
          "slug": "neos-energy-llc",
          "wells": 14
        }
      ],
      "dataAsOf": "2026-09-18"
    },
    {
      "state": "OH",
      "formationSlug": "devonian-ohio",
      "formationName": "Devonian (Ohio)",
      "wellCount": 525,
      "activeOperators": 178,
      "totalLateralFt": "673",
      "recentPermits24Mo": 0,
      "primaryCounties": "RICHLAND, SCIOTO, HURON, PIKE, CRAWFORD",
      "topOperators": [
        {
          "name": "FRANKLIN GAS & OIL",
          "slug": "franklin-gas-oil",
          "wells": 47
        },
        {
          "name": "ORPHAN WELL PROGRAM",
          "slug": "orphan-well-program",
          "wells": 29
        },
        {
          "name": "MAJ",
          "slug": null,
          "wells": 19
        },
        {
          "name": "RANGE RESOURCES",
          "slug": "range-resources",
          "wells": 16
        },
        {
          "name": "RIVER VALLEY ENERGY",
          "slug": "river-valley-energy",
          "wells": 14
        },
        {
          "name": "ECO POWER CRYPTO LLC",
          "slug": "eco-power-crypto-llc",
          "wells": 11
        },
        {
          "name": "SHAFER DAVID OIL PRODUCTION",
          "slug": "shafer-david-oil-production",
          "wells": 11
        },
        {
          "name": "R C POLING",
          "slug": "r-c-poling",
          "wells": 11
        },
        {
          "name": "RED BIRD PRODUCING COMPANY",
          "slug": "red-bird-producing-company",
          "wells": 10
        },
        {
          "name": "OXFORD OIL",
          "slug": "oxford-oil",
          "wells": 10
        }
      ],
      "dataAsOf": "2026-09-18"
    },
    {
      "state": "OH",
      "formationSlug": "michigan-basin",
      "formationName": "Michigan Basin",
      "wellCount": 259,
      "activeOperators": 46,
      "totalLateralFt": "123",
      "recentPermits24Mo": 0,
      "primaryCounties": "HENRY, LUCAS, PAULDING, DEFIANCE, FULTON",
      "topOperators": [
        {
          "name": "GRAHAMMICHAELIS",
          "slug": "grahammichaelis",
          "wells": 74
        },
        {
          "name": "PIONEER DRILLING COMPANY",
          "slug": "pioneer-drilling-company",
          "wells": 56
        },
        {
          "name": "NORTHERN INDIANA PRODUCER",
          "slug": null,
          "wells": 26
        },
        {
          "name": "OGE ENERGY",
          "slug": "oge-energy",
          "wells": 12
        },
        {
          "name": "BELDEN AND BLAKE CORP DBA WARD LAKE ENERGY",
          "slug": "belden-and-blake-corp-dba-ward-lake-energy",
          "wells": 10
        },
        {
          "name": "FITZGERALD ENERGY PRODUC",
          "slug": null,
          "wells": 8
        },
        {
          "name": "DUSTY DRILLING",
          "slug": "dusty-drilling",
          "wells": 6
        },
        {
          "name": "FULTON ENERGY",
          "slug": "fulton-energy",
          "wells": 5
        },
        {
          "name": "FRANTZ ENTERPRISES",
          "slug": "frantz-enterprises",
          "wells": 5
        },
        {
          "name": "AURORA ENERGY",
          "slug": "aurora-energy",
          "wells": 4
        }
      ],
      "dataAsOf": "2026-09-18"
    },
    {
      "state": "OH",
      "formationSlug": "marcellus",
      "formationName": "Marcellus",
      "wellCount": 191,
      "activeOperators": 33,
      "totalLateralFt": "266945",
      "recentPermits24Mo": 2,
      "primaryCounties": "JEFFERSON, MEIGS, BELMONT",
      "topOperators": [
        {
          "name": "J D DRILLING COMPANY",
          "slug": "j-d-drilling-company",
          "wells": 93
        },
        {
          "name": "GULFPORT APPALACHIA",
          "slug": "gulfport-appalachia",
          "wells": 21
        },
        {
          "name": "APPALACHIAN EXPLORATION",
          "slug": "appalachian-exploration",
          "wells": 14
        },
        {
          "name": "EQUITY OIL & GAS FUNDS IN",
          "slug": "equity-oil-gas-funds-in",
          "wells": 13
        },
        {
          "name": "ASCENT RESOURCESMARCELLUS",
          "slug": "ascent-resourcesmarcellus",
          "wells": 4
        },
        {
          "name": "AMTEK OIL",
          "slug": "amtek-oil",
          "wells": 4
        },
        {
          "name": "BENNOC",
          "slug": null,
          "wells": 3
        },
        {
          "name": "GULFPORT ENERGY",
          "slug": "gulfport-energy",
          "wells": 3
        },
        {
          "name": "JADOIL INC D VERNAU",
          "slug": "jadoil-inc-d-vernau",
          "wells": 3
        },
        {
          "name": "MURPHY OIL COMPANY",
          "slug": "murphy-oil",
          "wells": 3
        }
      ],
      "dataAsOf": "2026-09-18"
    },
    {
      "state": "OH",
      "formationSlug": "berea-murrysville",
      "formationName": "Berea-Murrysville",
      "wellCount": 165,
      "activeOperators": 62,
      "totalLateralFt": "0",
      "recentPermits24Mo": 0,
      "primaryCounties": "SCIOTO, JACKSON, MORROW, RICHLAND, PIKE",
      "topOperators": [
        {
          "name": "MAJ",
          "slug": null,
          "wells": 20
        },
        {
          "name": "ENERGY RESOURCE TECHNOLOGY GOM",
          "slug": "energy-resource-technology-gom",
          "wells": 18
        },
        {
          "name": "CEMCO OPERATING",
          "slug": "cemco-operating",
          "wells": 14
        },
        {
          "name": "TRISTAR PETROLEUM RESOURC",
          "slug": null,
          "wells": 11
        },
        {
          "name": "COSHOCTON PIPE COMPANY",
          "slug": "coshocton-pipe-company",
          "wells": 8
        },
        {
          "name": "MANITOU EXPLOR",
          "slug": "manitou-explor",
          "wells": 7
        },
        {
          "name": "CGAS EXPLORATION",
          "slug": "cgas-exploration",
          "wells": 6
        },
        {
          "name": "PETRO EVALUATION SERV",
          "slug": "petro-evaluation-serv",
          "wells": 5
        },
        {
          "name": "NORTHEAST NATURAL ENERGY",
          "slug": "northeast-natural-energy",
          "wells": 5
        },
        {
          "name": "BURLINGTON RESOURCES OIL & GAS COMPANY",
          "slug": "burlington-resources-oil-gas-company",
          "wells": 5
        }
      ],
      "dataAsOf": "2026-09-18"
    },
    {
      "state": "OH",
      "formationSlug": "antrim",
      "formationName": "Antrim",
      "wellCount": 69,
      "activeOperators": 13,
      "totalLateralFt": "1926",
      "recentPermits24Mo": 0,
      "primaryCounties": "FULTON, WILLIAMS",
      "topOperators": [
        {
          "name": "FULTON ENERGY",
          "slug": "fulton-energy",
          "wells": 22
        },
        {
          "name": "DON YOHE ENTERPRISES",
          "slug": "don-yohe-enterprises",
          "wells": 11
        },
        {
          "name": "FRANTZ ENTERPRISES",
          "slug": "frantz-enterprises",
          "wells": 7
        },
        {
          "name": "TOTAL PETROLEUM",
          "slug": "total-petroleum",
          "wells": 6
        },
        {
          "name": "AURORA ENERGY",
          "slug": "aurora-energy",
          "wells": 4
        },
        {
          "name": "HAUPRICHT GENE F",
          "slug": null,
          "wells": 4
        },
        {
          "name": "SAVOY ENERGY",
          "slug": "savoy-energy",
          "wells": 4
        },
        {
          "name": "QUICKSILVER RESOURCES",
          "slug": null,
          "wells": 3
        },
        {
          "name": "TRENDWELL ENERGY",
          "slug": null,
          "wells": 3
        },
        {
          "name": "COLUMBIA GAS TRANSMISSION",
          "slug": "columbia-gas-transmission",
          "wells": 2
        }
      ],
      "dataAsOf": "2026-09-18"
    }
  ]
}