Seneca Resources

Operator of record for 2,869 catalogued wells across 5 states. Every well below links to its full registry page.

Filed as: SENECA RESOURCES CO LLC · SENECA RESOURCES CORPORATION · Seneca Resources Company LLC · Seneca Resources Company, LLC · …

At a glance

Seneca Resources is the operator of record for 2,869 catalogued U.S. oil & gas wells in 5 states. 1,187 (41%) are active, 838 (29%) plugged & abandoned and 30 flagged as orphaned. Its largest concentration is in Pennsylvania, with 2,573 wells (90% of its portfolio).

Wells operated

2,869

Active

1,187

Plugged

838

Orphaned

Portfolio by state

State	Wells
Pennsylvania	2,573
California	185
New York	72
Louisiana	38
Alabama	1

Well mix

Oil wells: 320
Gas wells: 2,445
Shut-in: 1
Active share: 41%

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Where does Seneca Resources operate?

Seneca Resources's catalogued wells are spread across 5 states: Pennsylvania (2,573), California (185), New York (72), Louisiana (38) and Alabama (1). Its 2,573 Pennsylvania wells are 1% of the 224,189 catalogued in that state — its largest share of any state. Counts cover only states whose registries WellCensus has ingested with operator names; wells in Nebraska and Texas (location indexes) and in states without a registry ingest are not yet attributed to any operator.

How many of Seneca Resources’s wells are active, plugged or orphaned?

41% of Seneca Resources's catalogued wells are active, 13 percentage points above the national share of 29%. 29% are plugged & abandoned, against 47% nationally. 1 wells (0.0%) are shut-in — unplugged but idle. 30 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.

What kinds of wells does Seneca Resources operate?

By product class, 320 (11%) are oil wells and 2,445 (85%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Wdb18 N Vua;sl 10087 002 in Plaquemines, LA at 19,413 ft. The wells listed below sit in Plaquemines (LA), Jefferson Davis (LA) and Iberia (LA). State filings spell the name 5 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.

Notable wells operated by Seneca Resources

Wells operated by Seneca Resources
Well	API # / state ID	Status	Type	Location	Operator	Depth
Wdb18 N Vua;sl 10087 002	17-719-20291	Plugged & abandoned	Gas	Plaquemines, LA	Seneca Resources Corporation	19,413 ft
Wdb18 N Vua;sl 10087 001	17-719-20282	Plugged & abandoned	Gas	Plaquemines, LA	Seneca Resources Corporation	18,500 ft
Edward L Andrus Et Al 001	17-053-21084	Plugged & abandoned	Other type	Jefferson Davis, LA	Seneca Resources Corporation	17,901 ft
Wdb18 N Vua;sl 10088 001	17-719-20286	Plugged & abandoned	Gas	Plaquemines, LA	Seneca Resources Corporation	17,500 ft
Sl 10187 001	17-719-20309	Plugged & abandoned	Gas	Plaquemines, LA	Seneca Resources Corporation	17,000 ft
Wdb18 N Vua;sl 10088 005	17-719-20303	Plugged & abandoned	Gas	Plaquemines, LA	Seneca Resources Corporation	17,000 ft
Wdb18 N Vua;sl 10088 002	17-719-20296	Plugged & abandoned	Gas	Plaquemines, LA	Seneca Resources Corporation	16,500 ft
Wdb18 N Vua;sl 10088 003	17-719-20297	Plugged & abandoned	Gas	Plaquemines, LA	Seneca Resources Corporation	16,500 ft
Sl 10187 003	17-719-20340	Plugged & abandoned	Other type	Plaquemines, LA	Seneca Resources Corporation	16,250 ft
Wdb18 N Vua;sl 10087 003	17-719-20298	Plugged & abandoned	Gas	Plaquemines, LA	Seneca Resources Corporation	16,247 ft
Sl 15413 001	17-709-20329	Other status	Other type	Iberia, LA	Seneca Resources Corporation	16,200 ft
Sl 10187 002	17-719-20320	Plugged & abandoned	Gas	Plaquemines, LA	Seneca Resources Corporation	15,913 ft

Deepest first where depth is published. See all 2,869 wells →

Frequently asked questions

How many wells does Seneca Resources operate?

Seneca Resources is the operator of record for 2,869 catalogued oil & gas wells, with the largest concentration in Pennsylvania (2,573). Only wells in states WellCensus has ingested are counted.

How many of Seneca Resources's wells are still active?

1,187 of Seneca Resources's catalogued wells are active; 838 are plugged & abandoned and 30 are flagged as orphaned.

In which states does Seneca Resources operate wells?

Seneca Resources is the operator of record for wells in Pennsylvania (2,573), California (185), New York (72), Louisiana (38) and Alabama (1).

Does Seneca Resources operate mostly oil or gas wells?

320 of Seneca Resources's catalogued wells are oil wells and 2,445 are gas wells; the rest are injection, service or unclassified wells.

What is Seneca Resources's deepest well?

Among wells with a published depth, Wdb18 N Vua;sl 10087 002 in Plaquemines, LA is the deepest at 19,413 ft.

Where Seneca Resources's wells are

About this data

Source: State oil & gas regulator registries (operator of record as filed, exact-normalized across states) plus the USGS United States Documented Orphaned Well Database (2026), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.

Cite as: WellCensus, “Seneca Resources — well portfolio”, https://wellcensus.com/operators/seneca-resources-9837 (data as of October 10, 2026).

Dataset updated October 2026 . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).