Mercer County, PA oil and gas wells

Name: Mercer County, PA oil and gas wells
Creator: Pennsylvania Department of Environmental Protection

4,790 wells: 3,167 active, 441 plugged, 162 orphaned, run by 153 operators.

Figures from the Pennsylvania Department of Environmental Protection, updated 2026-10-19.

Top operators in Mercer

Operator	Active	Wells here
DIVERSIFIED PROD LLC	1,065	1,151
DIAMOND ENERGY PARTNERS LLC	565	569
OWS ACQUISITION CO LLC	393	395
JMG ENERGY LLC	177	178
OWS ENERGY LLC	145	145
ALLEN ENERGY LLC	122	122
COBRA RESOURCES LLC	107	124
LEGACY OGC LLC	92	92
DJR WELL SERVICES INC	91	94
NATL FUEL GAS SUPPLY CORP	64	83
DVY ENERGY LLC	55	55
WES OIL & GAS LLC	52	52
HILCORP ENERGY CO	48	70
BOCOR HOLDINGS LLC	39	44
PIN OAK ENERGY PARTNERS LLC	37	38
MCCOMB OIL INC	22	25
EVERFLOW EASTERN INC	19	25
MILLENNIUM OIL & GAS INC	15	17
ENERGY EXPLORATION & DEV LTD	11	12
PM BORTZ & ASSOC	2	3
ALLEN DANIEL W	2	2
GERALD MCDOWELL	2	2
HULSE RONALD D	2	2
ROLLINS LESTER G	2	2
WINNER JAMES JR	2	2

Wells

Not plugged · All wells · Plugged · Orphaned

Well	API / ID	Status	Type	Operator
HALANSKY 4	37-085-21625	Active	Oil & gas	DIVERSIFIED PROD LLC
HALL 1	37-085-22231	Active	Oil & gas	DIVERSIFIED PROD LLC
HALLIDAY 1	37-085-23675	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HALLIDAY 2	37-085-23674	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HALLOWELL 1	37-085-23640	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HAMILTON 1	37-085-21953	Temporarily abandoned	Oil & gas	DIVERSIFIED PROD LLC
HAMILTON 3	37-085-22213	Active	Oil & gas	DIVERSIFIED PROD LLC
HAMILTON M 1	37-085-24584	Active	Gas	DVY ENERGY LLC
HAMILTON M 2	37-085-24583	Active	Gas	DVY ENERGY LLC
HANSON 1	37-085-20853	Active	Oil & gas	DIVERSIFIED PROD LLC
HANSON 1	37-085-23866	Active	Gas	LEGACY OGC LLC
HANSON 2	37-085-24304	Active	Gas	LEGACY OGC LLC
HANSON 3	37-085-23871	Active	Gas	LEGACY OGC LLC
HARDESTY-DAVID UNIT 1	37-085-20150	Active	Gas	OWS ACQUISITION CO LLC
HARDISKY 1	37-085-22742	Active	Oil & gas	DIVERSIFIED PROD LLC
HARMON FENNELL 2	37-085-23178	Active	Oil & gas	DIAMOND ENERGY PARTNERS LLC
HARNETT E & P 1	37-085-23897	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HARNETT J & N 1	37-085-23924	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HAROLD & DORA CORNELIUS 1	37-085-21938	Active	Gas	OWS ACQUISITION CO LLC
HAROLD HARNETT 1	37-085-23287	Active	Gas	OWS ACQUISITION CO LLC
HAROLD L PFAFF 1	37-085-20292	Active	Gas	DJR WELL SERVICES INC
HARRIS 1	37-085-21359	Active	Oil & gas	DIVERSIFIED PROD LLC
HARRY CORYEA 1A	37-085-20289	Active	Oil & gas	OWS ACQUISITION CO LLC
HARRY CRAWFORD 1	37-085-20318	Active	Gas	OWS ENERGY LLC
HARRY CRAWFORD 2	37-085-20337	Active	Gas	OWS ENERGY LLC
HARRY E. SWEET 1	37-085-21074	Active	Gas	OWS ENERGY LLC
HART UNIT 2	37-085-24467	Active	Oil & gas	DIAMOND ENERGY PARTNERS LLC
HART-BAILEY UNIT #1 1	37-085-20577	Active	Gas	MATTHEW A & SUZANNE E HART
HASSEL UNIT 1	37-085-20919	Active	Oil & gas	DIVERSIFIED PROD LLC
HAUN A 2	37-085-24586	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HAVRILLA MCKEAN UNIT 1	37-085-24261	Active	Gas	DVY ENERGY LLC
HAWKINS 1	37-085-24339	Active	Gas	LEGACY OGC LLC
HAWKINS 2	37-085-24162	Active	Gas	LEGACY OGC LLC
HAYLETT 2	37-085-23838	Active	Gas	COBRA RESOURCES LLC
HAYMAN 1	37-085-22678	Active	Oil & gas	DIVERSIFIED PROD LLC
HEATH 1	37-085-00151	Orphaned	Unknown	PA DEP OFC OIL & GAS MGMT
HEATH 1	37-085-21919	Active	Oil & gas	DIVERSIFIED PROD LLC
HEATH 2	37-085-21868	Active	Oil & gas	DIVERSIFIED PROD LLC
HEAZLETT UNIT 1	37-085-21557	Active	Oil & gas	DIVERSIFIED PROD LLC
HECK 2	37-085-21203	Active	Gas	OWS ACQUISITION CO LLC
HECKATHORN 1	37-085-20926	Active	Oil & gas	DIVERSIFIED PROD LLC
HEDGLIN UNIT#1	37-085-21156	Active	Oil & gas	DIVERSIFIED PROD LLC
HEIM UNIT 1	37-085-23360	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HEISTER 1	37-085-23242	Active	Gas	OWS ENERGY LLC
HELEN BRUCK 1	37-085-21191	Active	Gas	OWS ACQUISITION CO LLC
HELEN BRUCK 3	37-085-21634	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HELEN OPALENIK 1	37-085-20892	Active	Oil & gas	EVERFLOW EASTERN INC
HELMUTH 3	37-085-24330	Active	Gas	JMG ENERGY LLC
HELMUTH UNIT 2	37-085-24310	Active	Gas	JMG ENERGY LLC
HELMUTH-HILLMAN UNIT 1	37-085-21245	Active	Gas	DIVERSIFIED PROD LLC
HELMUTH-MASTER-MARSTELLER UNIT 1	37-085-21325	Active	Gas	JMG ENERGY LLC
HELTZEL GREER UNIT 1	37-085-23486	Active	Oil & gas	OWS ENERGY LLC
HELTZEL HERALD UNIT 1	37-085-23296	Active	Gas	OWS ENERGY LLC
HELTZEL HERALD UNIT SOUTH 1	37-085-24130	Active	Oil & gas	OWS ENERGY LLC
HELTZEL JOHN UNIT 2	37-085-23285	Active	Gas	OWS ENERGY LLC
HEMPFIELD TWP 2	37-085-24207	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HENNON 1	37-085-00153	Orphaned	Unknown	PA DEP OFC OIL & GAS MGMT
HENRETTY B 1	37-085-23958	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HENRY & ANN HEICHEL 1	37-085-21777	Active	Gas	OWS ACQUISITION CO LLC
HENRY 1	37-085-22138	Active	Oil & gas	DIVERSIFIED PROD LLC
HENRY E MORELAND 1	37-085-22864	Active	Oil & gas	OWS ACQUISITION CO LLC
HERALD HELTZEL 1	37-085-20214	Active	Gas	OWS ENERGY LLC
HERM CORP. 1	37-085-20974	Active	Oil & gas	DIVERSIFIED PROD LLC
HERM CORP. 2	37-085-20975	Active	Oil & gas	DIVERSIFIED PROD LLC
HERM CORP. UNIT 3	37-085-20927	Active	Oil & gas	DIVERSIFIED PROD LLC
HERMAN UNIT 1	37-085-24280	Active	Oil & gas	DIAMOND ENERGY PARTNERS LLC
HERRIOTT 1	37-085-22772	Active	Oil & gas	DIVERSIFIED PROD LLC
HERSHBERGER 1	37-085-22987	Active	Gas	COBRA RESOURCES LLC
HICKMAN LUMBER 1	37-085-23010	Active	Oil & gas	ALLEN ENERGY LLC
HICKMAN LUMBER 1 SC	37-085-23365	Active	Gas	ALLEN ENERGY LLC
HICKMAN LUMBER CO 1	37-085-21776	Active	Oil & gas	OWS ACQUISITION CO LLC
HICKORY VFW 1	37-085-20870	Active	Oil & gas	DIVERSIFIED PROD LLC
HIGGINS 1	37-085-23461	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HIGGINS 2	37-085-23471	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HIGGINS 3	37-085-24402	Active	Oil & gas	DIAMOND ENERGY PARTNERS LLC
HIGH E HOLLABAUGH 1	37-085-20447	Active	Gas	OWS ENERGY LLC
HILL 1	37-085-00140	Orphaned	Unknown	PA DEP OFC OIL & GAS MGMT
HILL 1	37-085-21398	Active	Oil & gas	DIVERSIFIED PROD LLC
HILL H UNIT 5	37-085-24321	Active	Gas	JMG ENERGY LLC
HINDMAN 1	37-085-22109	Temporarily abandoned	Oil & gas	DIVERSIFIED PROD LLC
HINDMAN 2	37-085-22124	Active	Oil & gas	DIVERSIFIED PROD LLC
HINES UNIT 1	37-085-21178	Active	Oil & gas	DIVERSIFIED PROD LLC
HINKSON T 1	37-085-23811	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HISSOM 1	37-085-22332	Active	Oil & gas	DIVERSIFIED PROD LLC
HISSOM 2	37-085-22450	Active	Oil & gas	DIVERSIFIED PROD LLC
HITCHCOCK 1	37-085-23240	Active	Gas	OWS ACQUISITION CO LLC
HITCHCOCK 2	37-085-23267	Active	Gas	OWS ACQUISITION CO LLC
HITTLE 1	37-085-24060	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HMA UNIT 1	37-085-22805	Active	Oil & gas	DJR WELL SERVICES INC
HOAGLAND-HOFIUS UNIT 1	37-085-20620	Active	Gas	DIVERSIFIED PROD LLC
HOCHSTETLER H 2	37-085-24596	Active	Gas	DVY ENERGY LLC
HOCHSTETLER H UNIT 1	37-085-24595	Active	Gas	DVY ENERGY LLC
HOCHSTETLER J UNIT 1	37-085-24533	Active	Gas	DVY ENERGY LLC
HOCHSTETLER J UNIT 2	37-085-24529	Active	Gas	DVY ENERGY LLC
HOFFACKER UNIT 1	37-085-23351	Active	Gas	DIAMOND ENERGY PARTNERS LLC
HOFFMAN 1	37-085-21918	Active	Oil & gas	DIVERSIFIED PROD LLC
HOFFMAN 1	37-085-22979	Active	Oil & gas	OWS ACQUISITION CO LLC
HOFFMAN 2	37-085-23044	Active	Oil & gas	OWS ACQUISITION CO LLC
HOGAN 2	37-085-21116	Active	Oil & gas	DIVERSIFIED PROD LLC
HOGAN 3	37-085-21151	Temporarily abandoned	Oil & gas	DIVERSIFIED PROD LLC