How many oil and gas wells are in Ohio?

Ohio has 242,049 catalogued oil & gas wells on WellCensus: 82,042 active, 106,034 plugged & abandoned and 24,569 documented orphans.

How many orphaned wells does Ohio have?

24,569 wells in Ohio are documented orphans — unplugged with no solvent operator of record.

Historic Owner is the largest operator active in Ohio by total catalogued wells (118,046 across 1 state).

242,049 catalogued wellbores in Ohio, from the state regulator's registry plus the federal orphaned-well inventory.

Dataset updated July 2026 . Derived from public data sources.

Catalogued wells

242,049

Active

82,042

Plugged

106,034

Documented orphans

24,569

Largest oil & gas operators active in Ohio
Operator	Wells	Active	Plugged	States
Historic Owner	118,046	18,978	0	OH
Chevron USA	65,303	13,921	41,956	AL AR CA CO KS LA MI ND NM OH OK PA UT WV WY
Diversified Production	31,363	28,431	474	AL KY LA OH OK WV
Hilcorp Energy	19,950	15,820	1,018	AL CO LA MS NM OH PA WY
Eog Resources	16,762	2,897	3,895	AR CA CO KS LA MI MS MT ND NM NY OH OK PA UT WV WY
Texaco	10,522	267	1,453	AL AR CA CO IL KS KY LA MI MS MT ND NY OH OK PA UT
Pdc Energy	8,577	2,373	3,795	CO KS OH
Devon Energy Production	8,543	2,543	1,906	CO KS LA MI MT ND NM OH OK WY
Ows Acquisition	7,259	7,109	0	OH PA WV
Xto Energy	6,846	2,814	1,712	AR CO KS KY LA MT ND NM NY OH OK PA UT WV WY

Well counts are the operator’s national totals; state placeholder records are excluded. See methodology.

Deepest oil & gas wells in Ohio
Well	API #	Status	Type	Location	Operator	Depth
Rothenbuhler B UP MNR 4H	34-111-24967	Active	Oil	Monroe, OH	Expand Operating LLC	34,403 ft
Emerson Belle C UP MNR 5H	34-111-24990	Active	Oil	Monroe, OH	Expand Operating LLC	34,098 ft
McFrederick B UP BLT 2H	34-013-21616	Other status	Oil	Belmont, OH	Expand Operating LLC	33,785 ft
Cross Creek A S CRC JF 4H	34-081-21016	Active	Oil	Jefferson, OH	Ascent Resources Utica LLC	33,598 ft
Emerson Belle B UP MNR 3H	34-111-24989	Active	Oil	Monroe, OH	Expand Operating LLC	33,145 ft
Dickson SE CRC JF 6H	34-081-21008	Active	Oil	Jefferson, OH	Ascent Resources Utica LLC	33,014 ft
Emerson Belle A UP MNR 1H	34-111-24988	Active	Oil	Monroe, OH	Expand Operating LLC	32,994 ft
Dickson S CRC JF 4H	34-081-21007	Active	Oil	Jefferson, OH	Ascent Resources Utica LLC	32,736 ft
Cross Creek A SE CRC JF 6H	34-081-21017	Other status	Oil	Jefferson, OH	Ascent Resources Utica LLC	32,736 ft
Dickson E CRC JF 8H	34-081-21009	Active	Oil	Jefferson, OH	Ascent Resources Utica LLC	32,582 ft

Counties with 25 or more catalogued wells.