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WellCensus

Landmark 4

Operator of record for 52 catalogued wells across 1 state. Every well below links to its full registry page.

At a glance

Landmark 4 is the operator of record for 52 catalogued U.S. oil & gas wells in 1 state. 37 (71%) are active, 15 (29%) plugged & abandoned. Its largest concentration is in Ohio, with 52 wells (100% of its portfolio).

Wells operated

52

Active

37

Plugged

15

Orphaned

0

Portfolio by state

StateWells
Ohio52

Well mix

Oil wells
52
Gas wells
0
Shut-in
0
Active share
71%

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Where does Landmark 4 operate?

Landmark 4's catalogued wells are spread across 1 state: Ohio (52). Its 52 Ohio wells are 0.0% of the 242,052 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 Landmark 4’s wells are active, plugged or orphaned?

71% of Landmark 4's catalogued wells are active, 42 percentage points above the national share of 29%. 29% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.

What kinds of wells does Landmark 4 operate?

By product class, 52 (100%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Firestone 7f in Summit, OH at 6,042 ft. The wells listed below sit in Summit (OH) and Medina (OH).

Notable wells operated by Landmark 4

Wells operated by Landmark 4
WellAPI # / state IDStatusTypeLocationOperatorDepth
Firestone 7f34-153-22899ActiveOilSummit, OHLandmark 4 LLC6,042 ft
Tamsin Park 134-153-20690Plugged & abandonedOilSummit, OHLandmark 4 LLC3,904 ft
Firestone 6f234-153-22918ActiveOilSummit, OHLandmark 4 LLC3,817 ft
Fry 134-153-21918ActiveOilSummit, OHLandmark 4 LLC3,795 ft
Allard 3a34-103-25024ActiveOilMedina, OHLandmark 4 LLC3,775 ft
Schwager 234-153-21312ActiveOilSummit, OHLandmark 4 LLC3,755 ft
Schwager 134-153-21313ActiveOilSummit, OHLandmark 4 LLC3,750 ft
Firestone 8-F34-153-22900ActiveOilSummit, OHLandmark 4 LLC3,747 ft
Fry 234-153-21917ActiveOilSummit, OHLandmark 4 LLC3,744 ft
Kerek 134-153-21433ActiveOilSummit, OHLandmark 4 LLC3,715 ft
Alexander 134-153-20357Plugged & abandonedOilSummit, OHLandmark 4 LLC3,704 ft
Whitmore 134-153-21511ActiveOilSummit, OHLandmark 4 LLC3,685 ft

Deepest first where depth is published. See all 52 wells →

Frequently asked questions

How many wells does Landmark 4 operate?

Landmark 4 is the operator of record for 52 catalogued oil & gas wells, with the largest concentration in Ohio (52). Only wells in states WellCensus has ingested are counted.

How many of Landmark 4's wells are still active?

37 of Landmark 4's catalogued wells are active; 15 are plugged & abandoned.

In which states does Landmark 4 operate wells?

Landmark 4 is the operator of record for wells in Ohio (52).

Does Landmark 4 operate mostly oil or gas wells?

52 of Landmark 4's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.

What is Landmark 4's deepest well?

Among wells with a published depth, Firestone 7f in Summit, OH is the deepest at 6,042 ft.

Where Landmark 4'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, “Landmark 4 — well portfolio”, https://wellcensus.com/operators/landmark-4-86296 (data as of October 10, 2026).

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