Mcr

Operator of record for 570 catalogued wells across 2 states. Every well below links to its full registry page.

Filed as: M.C.R. Limited · MCR, LLC

Wells operated

570

Active

285

Plugged

Orphaned

Portfolio by state

State	Wells
Montana	568
Illinois	2

Well mix

Oil wells: 299
Gas wells: 185
Shut-in: 239
Active share: 50%

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Notable wells operated by Mcr

Wells operated by Mcr
Well	API #	Status	Type	Location	Operator	Depth
Erickson-Ruby 1-A	25-073-05210	Shut-in	Oil	Pondera, MT	Mcr, LLC	4,250 ft
Dull 22-24	25-051-21639	Shut-in	Oil	Liberty, MT	Mcr, LLC	4,094 ft
Mahoney 1	25-051-05199	Active	Gas	Liberty, MT	Mcr, LLC	4,068 ft
Sasu 42x-26	25-101-23993	Active	Oil	Toole, MT	Mcr, LLC	3,878 ft
Sasu 19	25-101-23994	Active	Injection	Toole, MT	Mcr, LLC	3,766 ft
State W8-8	25-051-21114	Active	Injection	Liberty, MT	Mcr, LLC	3,700 ft
I. Wallace 12X-11	25-051-21242	Active	Other type	Liberty, MT	Mcr, LLC	3,450 ft
Federal 1-12	25-051-05460	Shut-in	Oil	Liberty, MT	Mcr, LLC	3,313 ft
State 34-36	25-035-21113	Shut-in	Oil	Glacier, MT	Mcr, LLC	3,305 ft
State 11-12	25-051-21832	Active	Oil	Liberty, MT	Mcr, LLC	3,280 ft
State 12X-12	25-051-21240	Active	Oil	Liberty, MT	Mcr, LLC	3,252 ft
State 1	25-051-05269	Active	Injection	Liberty, MT	Mcr, LLC	3,250 ft

Deepest first where depth is published; find any well via search.

Frequently asked questions

How many wells does Mcr operate?

Mcr is the operator of record for 570 catalogued oil & gas wells, with the largest concentration in Montana (568). Only wells in states WellCensus has ingested are counted.

How many of Mcr's wells are still active?

285 of Mcr's catalogued wells are active; 36 are plugged & abandoned and 1 are flagged as orphaned.

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