Stored formation/play groups ranked by recorded well count, with recorded operators and primary counties. Coverage is limited to the groups included below.
Buckhead Energy analysis of public oil and gas data. Daily refresh scheduled. Stored source refresh: 2026-11-06.
Stored source refresh: 2026-11-06. 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. Figures are Buckhead Energy analysis of public oil and gas data; counts under 3 wells are withheld.
Buckhead Energy analysis of public oil and gas data. Scheduled refreshes do not guarantee that new regulator filings are available; the state regulator remains the record of any specific well.
Quick answer: The highest well-count groups listed for Ohio are the Utica, Medina-Clinton-Tuscarora, Cincinnati Arch, Appalachian Basin - (Eastern Overthrust Area) and Appalachian Basin, led by the Utica with 109,020 wells on record. Ranked by well count across 10 tracked formations from Buckhead Energy analysis of public oil and gas data. Stored source refresh: 2026-11-06. These are limited stored records; reporting windows are evaluated at source refresh.
Top Operators:
Ows Acquisition CO LLC (5,601), Diversified Production LLC (4,684), Eco Power Crypto LLC (2,262), Oxford Oil (1,430), Kenoil (1,349), Columbia Gas Transmission (1,262), Northwood Energy (1,249), Petrox (1,151), Pin Oak Energy Partners (1,147), Stonebridge Operating Company (1,069)
Primary counties: Washington, Monroe, Muskingum, Licking, Coshocton
Top Operators:
Columbia Gas Transmission (1,486), Kilbarger Investments (384), Huffmanbowers (371), Quaker State Oil Ref (325), Oxford Oil (272), Kenoil (269), 4m Enterprise (214), J D Drilling Company (155), R C Poling (154), Bell Oil (139)
Primary counties: Hocking, Perry, Fairfield, Vinton, Ashland
Top Operators:
Landowner Grant Program 2005 (102), Frantz Enterprises (83), Nieset Lawrence & Christ (75), J & J Operating (55), A S Energy (49), Rockwell Oil Company (48), Bakerwell Serv Rigs (42), Belden And Blake CORP Dba Ward Lake Energy (41), Second Oil (39), Harmeyer Richard G (39)
Primary counties: Hancock, Allen, Auglaize, Wood, Seneca
Top Operators:
Ascent Resourcesmarcellus (278), Eog Ohio, LLC (244), Gulfport Appalachia (147), Eog Resources (116), Hilcorp Energy Company (82), Expand Operating LLC (57), Rice Drilling B (32), Inr Ohio LLC (24), Diversified Production LLC (11), Grenadier Energy Iii, LLC (8)
Primary counties: Monroe, Belmont, Harrison, Columbiana, Carroll
Top Operators:
Ascent Resourcesmarcellus (88), Inr Ohio LLC (82), Eog Ohio, LLC (73), Eog Resources (68), Hocking Hills Energy And Well Service LLC (28), Houghton Investments (20), Ohio Energy Assets (16), Chuck Henry Energy (16), Mfc Drilling (15), Chesapeake Energy (14)
Primary counties: Morgan, Noble, Medina, Guernsey, Pickaway
Top Operators:
Franklin Gas & Oil (47), Orphan Well Program (29), Maj (19), Range Resources (16), River Valley Energy (14), Eco Power Crypto LLC (11), Shafer David Oil Production (11), R C Poling (11), Red Bird Producing Company (10), Oxford Oil (10)
Primary counties: Richland, Scioto, Huron, Pike, Crawford
Top Operators:
Grahammichaelis (74), Pioneer Drilling Company (56), Northern Indiana Producer (26), Oge Energy (12), Belden And Blake CORP Dba Ward Lake Energy (10), Fitzgerald Energy Produc (8), Dusty Drilling (6), Fulton Energy (5), Frantz Enterprises (5), Aurora Energy (4)
Primary counties: Henry, Lucas, Paulding, Defiance, Fulton
Top Operators:
J D Drilling Company (93), Gulfport Appalachia (21), Appalachian Exploration (14), Equity Oil & Gas Funds In (13), Amtek Oil (4), Ascent Resourcesmarcellus (4), Bennoc (3), Gulfport Energy (3), Kst Oil & Gas (3), Murphy Oil Company (3)
Primary counties: Jefferson, Meigs, Belmont
Top Operators:
Maj (20), Energy Resource Technology Gom (18), Cemco Operating (14), Tristar Petroleum Resourc (11), Coshocton Pipe Company (8), Manitou Explor (7), Cgas Exploration (6), Northeast Natural Energy (5), Petro Evaluation Serv (5), Burlington Resources Oil & Gas Company (5)
Primary counties: Scioto, Jackson, Morrow, Richland, Pike
Top Operators:
Fulton Energy (22), Don Yohe Enterprises (11), Frantz Enterprises (7), Total Petroleum (6), Savoy Energy (4), Aurora Energy (4), Haupricht Gene F (4), Quicksilver Resources (3), Trendwell Energy (3), Columbia Gas Transmission (—)
Primary counties: Fulton, Williams
Source: Buckhead Energy analysis of public oil and gas data, aggregated by primary play / interpreted formation / basin.
Threshold: Groups require at least 25 recorded wells and a known operator. The directory shows up to 50 groups by well count; omitted groups are not evidence of no activity.
Owner context: These formation summaries describe reported activity. They do not establish ownership, payment entitlement or a value for an individual tract.
Refresh cadence: Daily refresh scheduled. Stored source refresh: 2026-11-06.
The highest well-count formation/play groups listed for Ohio are the Utica, Medina-Clinton-Tuscarora, Cincinnati Arch, Appalachian Basin - (Eastern Overthrust Area) and Appalachian Basin, among others. This directory tracks 10 recorded formation/play groups ranked by well count, per Buckhead Energy analysis of public oil and gas data. Stored source refresh: 2026-11-06. These are limited stored records; reporting windows are evaluated at source refresh.
The Utica has the most wells among the listed Ohio groups — 109,020 wells, worked by 7,817 recorded operators, per Buckhead Energy analysis of public oil and gas data. This is a well-count ranking, not a reserves or value ranking. Stored source refresh: 2026-11-06. These are limited stored records; reporting windows are evaluated at source refresh.
The operators with the most wells on record in the Utica are Ows Acquisition Co. LLC, Diversified Production LLC, Eco Power Crypto LLC, Oxford Oil, Kenoil. Each formation card below lists its top operators by well count. Stored source refresh: 2026-11-06. These are limited stored records; reporting windows are evaluated at source refresh.
A complete permit total is unavailable because one or more listed formation groups has an unknown permit count. Stored source refresh: 2026-11-06. These are limited stored records; reporting windows are evaluated at source refresh.
Your deed and county records determine which formations your mineral rights cover; a tract can own multiple stacked formations. This directory is informational only, not a valuation. Stored source refresh: 2026-11-06. These are limited stored records; reporting windows are evaluated at source refresh.
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Get Your Free Written OfferState: Ohio
Active formations: 10
Total wells: 124,103
Recent permits: —
Last refresh: 2026-11-06
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