Jefferson County, Pennsylvania Wells Summary
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Total wells
Last 12 months
Prior 12 months
Year-over-year
Jefferson County contains 9,004 wells on file, with top operators including DIVERSIFIED PROD LLC and NATL FUEL GAS SUPPLY CORP.
Most recent well on record: VIRGINIA A MOLINENGO ET AL 1, operated by WYANT ASSOC LL PARTNERSHIP — last updated March 2026.
Active drilling rigs · Baker Hughes snapshot, week of 2026-07-02
By basin
- 16 Marcellus
- 1 Utica
Drilling for
- 17 Gas
Jefferson County well density
Every dot is one well — small blue dots are historic wells;
larger orange dots are wells with activity in the last 60 days.
8,042 wells plotted ·
0 active in last 60 days
Basemap © OpenStreetMap contributors · well data © Oil and Gas Information · tiles served by DynamoMap
Top Operators in Jefferson County by total wells
Operators: Diversified Prod Llc, Natl Fuel Gas Supply Corp, Peoples Gas Co Llc, Ksm Energy Inc, Fairman Corp, Seneca Resources Co Llc, Pin Oak Energy Partners Llc, Coolspring Gas & Oil Co Llc, Pa Dep Ofc Oil & Gas Mgmt, Snyder Bros Inc.
Top Counties in Pennsylvania most active by total wells
Compare Jefferson against the other busiest counties in Pennsylvania:
- McKean · 53,645 wells
- Warren · 34,622 wells
- Venango · 33,925 wells
- Indiana · 16,495 wells
- Armstrong · 12,471 wells
- Forest · 12,317 wells
- Washington · 10,774 wells
- Westmoreland · 10,329 wells
- Greene · 8,447 wells
- Clarion · 7,918 wells
- Clearfield · 7,315 wells
- Elk · 7,261 wells
Recent wells
| Well Name | Last activity | Updates | Operator | API |
|---|---|---|---|---|
| VIRGINIA A MOLINENGO ET AL 1 | 2026-03-18 | WYANT ASSOC LL PARTNERSHIP | 065-25397 | |
| HA CORBETT 12 | 2026-03-18 | XTO ENERGY INC | 065-26873 | |
| JH LEWIS 5 | 2026-03-18 | XTO ENERGY INC | 065-26882 | |
| HA CORBETT 10 | 2026-03-18 | XTO ENERGY INC | 065-26871 | |
| MCCOOL 1 | 2026-03-18 | WYANT ASSOC LL PARTNERSHIP | 065-25411 | |
| WINSLOW C 4HU | 2026-03-18 | XTO ENERGY INC | 065-27085 | |
| HA CORBETT 13 | 2026-03-18 | XTO ENERGY INC | 065-26874 | |
| WINSLOW C 3HU | 2026-03-18 | XTO ENERGY INC | 065-27081 | |
| WINSLOW B 1HU | 2026-03-18 | XTO ENERGY INC | 065-27086 | |
| DA HAMILTON 11 | 2026-03-18 | XTO ENERGY INC | 065-26771 |
Surface Ownership Records:
