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Adco Well Services

Operator of record for 21 catalogued wells across 1 state. Every well below links to its full registry page.

At a glance

Adco Well Services is the operator of record for 21 catalogued U.S. oil & gas wells in 1 state. 18 (86%) are active, 0 (0%) plugged & abandoned. Its largest concentration is in New York, with 21 wells (100% of its portfolio).

Wells operated

21

Active

18

Plugged

0

Orphaned

0

Portfolio by state

StateWells
New York21

Well mix

Oil wells
0
Gas wells
21
Shut-in
3
Active share
86%

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Where does Adco Well Services operate?

Adco Well Services's catalogued wells are spread across 1 state: New York (21). Its 21 New York wells are 0.0% of the 46,514 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 Adco Well Services’s wells are active, plugged or orphaned?

86% of Adco Well Services's catalogued wells are active, 57 percentage points above the national share of 29%. 0% are plugged & abandoned, against 47% nationally. 3 wells (14%) are shut-in — unplugged but idle. None of the wells filed under this name is flagged as orphaned.

What kinds of wells does Adco Well Services operate?

By product class, 0 (0%) are oil wells and 21 (100%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Riester 1171-3 in Cayuga, NY at 2,393 ft. The wells listed below sit in Cayuga (NY) and Seneca (NY).

Notable wells operated by Adco Well Services

Wells operated by Adco Well Services
WellAPI # / state IDStatusTypeLocationOperatorDepth
Riester 1171-331-011-21291ActiveGasCayuga, NYA.D.C.O. Well Services Inc.2,393 ft
Aversa 1104-131-011-20679ActiveGasCayuga, NYA.D.C.O. Well Services Inc.2,372 ft
Leonard 257431-099-20413ActiveGasSeneca, NYA.D.C.O. Well Services Inc.2,355 ft
Sanders 1172-131-011-21308Shut-inGasCayuga, NYA.D.C.O. Well Services Inc.2,347 ft
Clark 1012-131-011-21252ActiveGasCayuga, NYA.D.C.O. Well Services Inc.2,346 ft
Sanders 1163-231-011-21287ActiveGasCayuga, NYA.D.C.O. Well Services Inc.2,340 ft
Gilmore 1026-131-011-21271ActiveGasCayuga, NYA.D.C.O. Well Services Inc.2,328 ft
D'Amico 250831-099-17572ActiveGasSeneca, NYA.D.C.O. Well Services Inc.2,323 ft
Gulliver 119631-011-21347ActiveGasCayuga, NYA.D.C.O. Well Services Inc.2,307 ft
Gilmore S 1022-131-011-21277ActiveGasCayuga, NYA.D.C.O. Well Services Inc.2,294 ft
Doody Donald 986-331-011-21239ActiveGasCayuga, NYA.D.C.O. Well Services Inc.2,278 ft
Sigrist 819-231-099-20524ActiveGasSeneca, NYA.D.C.O. Well Services Inc.2,275 ft

Deepest first where depth is published. See all 21 wells →

Frequently asked questions

How many wells does Adco Well Services operate?

Adco Well Services is the operator of record for 21 catalogued oil & gas wells, with the largest concentration in New York (21). Only wells in states WellCensus has ingested are counted.

How many of Adco Well Services's wells are still active?

18 of Adco Well Services's catalogued wells are active; 0 are plugged & abandoned.

In which states does Adco Well Services operate wells?

Adco Well Services is the operator of record for wells in New York (21).

Does Adco Well Services operate mostly oil or gas wells?

0 of Adco Well Services's catalogued wells are oil wells and 21 are gas wells; the rest are injection, service or unclassified wells.

What is Adco Well Services's deepest well?

Among wells with a published depth, Riester 1171-3 in Cayuga, NY is the deepest at 2,393 ft.

Where Adco Well Services'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, “Adco Well Services — well portfolio”, https://wellcensus.com/operators/adco-well-services-132348 (data as of October 10, 2026).

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