Cities Service Oil

Operator of record for 719 catalogued wells across 8 states. Every well below links to its full registry page.

Filed as: CITIES SERVICE OIL CO · CITIES SERVICE OIL CO. · CITIES SERVICE OIL COMPANY · Cities Service Oil Co · …

At a glance

Cities Service Oil is the operator of record for 719 catalogued U.S. oil & gas wells in 8 states. 39 (5%) are active, 637 (89%) plugged & abandoned and 4 flagged as orphaned. Its largest concentration is in Louisiana, with 228 wells (32% of its portfolio).

Wells operated

719

Active

Plugged

637

Orphaned

Portfolio by state

State	Wells
Louisiana	228
Mississippi	173
Illinois	154
Kentucky	124
North Dakota	19
California	12
Montana	5
Arkansas	4

Well mix

Oil wells: 241
Gas wells: 104
Shut-in: 0
Active share: 5%

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Where does Cities Service Oil operate?

Cities Service Oil's catalogued wells are spread across 8 states: Louisiana (228), Mississippi (173), Illinois (154), Kentucky (124) and North Dakota (19) and 3 more. Its 173 Mississippi wells are 0.5% of the 34,924 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 Cities Service Oil’s wells are active, plugged or orphaned?

5% of Cities Service Oil's catalogued wells are active, 23 percentage points below the national share of 29%. 89% are plugged & abandoned, against 47% nationally. 4 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.

What kinds of wells does Cities Service Oil operate?

By product class, 241 (34%) are oil wells and 104 (14%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Clark A-1 A-1 in Claiborne, MS at 20,064 ft. The wells listed below sit in Claiborne (MS), Vermilion (LA), Terrebonne (LA), Plaquemines (LA), St Mary (LA) and Jasper (MS) and other counties. State filings spell the name 6 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.

Notable wells operated by Cities Service Oil

Wells operated by Cities Service Oil
Well	API # / state ID	Status	Type	Location	Operator	Depth
Clark A-1 A-1	23-021-20025	Plugged & abandoned	Other type	Claiborne, MS	Cities Service Oil Co.	20,064 ft
Sl 4677 001	17-113-01479	Plugged & abandoned	Other type	Vermilion, LA	Cities Service Oil Co.	19,028 ft
Ll&e /A/ 001	17-109-20146	Plugged & abandoned	Other type	Terrebonne, LA	Cities Service Oil Co.	17,500 ft
Sl 4388 001	17-075-04403	Plugged & abandoned	Other type	Plaquemines, LA	Cities Service Oil Co.	16,960 ft
Martin /B/ 001	17-101-02228	Plugged & abandoned	Other type	St Mary, LA	Cities Service Oil Co.	16,607 ft
Sl 4390 001	17-075-04404	Plugged & abandoned	Other type	Plaquemines, LA	Cities Service Oil Co.	16,327 ft
Mc Neil A-1 A-1	23-061-20185	Plugged & abandoned	Other type	Jasper, MS	Cities Service Oil Co.	16,256 ft
Baudoin A 001	17-113-01347	Plugged & abandoned	Other type	Vermilion, LA	Cities Service Oil Co.	15,001 ft
Supervisors-B 2 2	23-041-00075	Plugged & abandoned	Oil	Greene, MS	Cities Service Oil Co.	14,747 ft
Hancock Bank A 1 1	23-045-00054	Plugged & abandoned	Other type	Hancock, MS	Cities Service Oil Co.	14,508 ft
Brownell Kidd 'B' 001	17-007-00006	Plugged & abandoned	Gas	Assumption, LA	Cities Service Oil Co.	14,320 ft
Yelverton 1-A 1-A	23-129-00095	Plugged & abandoned	Other type	Smith, MS	Cities Service Oil Co.	14,122 ft

Deepest first where depth is published. See all 719 wells →

Frequently asked questions

How many wells does Cities Service Oil operate?

Cities Service Oil is the operator of record for 719 catalogued oil & gas wells, with the largest concentration in Louisiana (228). Only wells in states WellCensus has ingested are counted.

How many of Cities Service Oil's wells are still active?

39 of Cities Service Oil's catalogued wells are active; 637 are plugged & abandoned and 4 are flagged as orphaned.

In which states does Cities Service Oil operate wells?

Cities Service Oil is the operator of record for wells in Louisiana (228), Mississippi (173), Illinois (154), Kentucky (124), North Dakota (19), California (12), Montana (5) and Arkansas (4).

Does Cities Service Oil operate mostly oil or gas wells?

241 of Cities Service Oil's catalogued wells are oil wells and 104 are gas wells; the rest are injection, service or unclassified wells.

What is Cities Service Oil's deepest well?

Among wells with a published depth, Clark A-1 A-1 in Claiborne, MS is the deepest at 20,064 ft.

Where Cities Service Oil'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, “Cities Service Oil — well portfolio”, https://wellcensus.com/operators/cities-service-oil-8915 (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).