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Mercer County, PA oil and gas wells
4,790 wells: 3,167 active, 442 plugged, 162 orphaned, run by 153 operators.
Mercer County, PA ranks #17 among Pennsylvania counties by wells on record, with 2% of the state's 224,594 wells. 3,167 of its wells (66%) are active, above the statewide share of 47%. Another 51 are shut in or temporarily abandoned. 162 wells are flagged as orphaned, with no responsible operator. Of the 4,669 wells here with a type on record, 52% are gas wells, 43% combined oil and gas wells and 2% oil wells. Drilling records here run from 1917 to 2015; none of the dated wells was drilled in 2016 or later. 110 wells have been plugged since 2016. 153 operators have wells here. The largest by active wells is DIVERSIFIED PROD LLC, with 1,065 active (34% of the county's active wells).
Figures from the Pennsylvania Department of Environmental Protection, updated 2026-11-02.
Top operators in Mercer
| Operator | Active | Wells here |
|---|---|---|
| DIVERSIFIED PROD LLC | 1,065 | 1,151 |
| DIAMOND ENERGY PARTNERS LLC | 604 | 608 |
| 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 |
| 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 |
| STRYKER ENERGY LLC | 1 | 8 |
Wells
Not plugged · All wells · Plugged · Orphaned
| Well | API / ID | Status | Type | Operator |
|---|---|---|---|---|
| BABNIS UNIT 1 | 37-085-21154 | Active | Oil & gas | 🔒 Sign in free |
| BABYAK UNIT 1 | 37-085-22386 | Active | Gas | 🔒 Sign in free |
| BADGER 1 | 37-085-22537 | Active | Oil & gas | 🔒 Sign in free |
| BADGER 2 | 37-085-22618 | Active | Oil & gas | 🔒 Sign in free |
| BAGNALL 1 | 37-085-21015 | Active | Oil & gas | 🔒 Sign in free |
| BAGNALL 4 | 37-085-21439 | Active | Oil & gas | 🔒 Sign in free |
| BAGNALL UNIT 3 | 37-085-21114 | Plugged | Oil & gas | 🔒 Sign in free |
| BAGNALL UNIT 5 | 37-085-21353 | Temporarily abandoned | Oil & gas | 🔒 Sign in free |
| BAGNALL UNIT 6 | 37-085-21584 | Active | Oil & gas | 🔒 Sign in free |
| BAILEY UNIT 1 | 37-085-20698 | Cancelled / expired | Oil & gas | 🔒 Sign in free |
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Mercer County, PA well questions
How many oil and gas wells are in Mercer County, PA?
4,790 wells are on record: 3,167 active, 51 shut in or temporarily abandoned and 442 plugged, with 162 flagged orphaned.
Who operates the most wells in Mercer County, PA?
DIVERSIFIED PROD LLC, with 1,065 active wells and 1,151 wells on record here. The table above lists the top operators.
Are new wells still being drilled in Mercer County, PA?
Not recently. The last well with a drilling date on record was drilled in 2015.