Oil & gas wells in Mason County, MI
888 catalogued wells in Mason County, Michigan, from the state regulator registry and the federal orphaned-well inventory.
Dataset updated . Derived from public data sources.
At a glance
Mason County, Michigan has 888 catalogued oil & gas wells: 35 active (4%), 162 plugged & abandoned (18%) and 0 documented orphans. It ranks 39th of the 81 Michigan counties WellCensus profiles by well count and holds 1% of the state's 85,673 catalogued wells.
Catalogued wells
888
Active
35
Plugged
162
Documented orphans
0
What is the status of oil and gas wells in Mason County?
4% of Mason County's wells are active, 13 percentage points below the Michigan share of 17%. 18% are plugged & abandoned, against 16% statewide and 47% nationally. 17 wells (2%) are shut-in — unplugged but idle. No documented orphaned wells are recorded in Mason County; Michigan as a whole has 257. The remaining 674 carry status codes outside those classes, such as permitted or cancelled locations.
What kinds of wells are in Mason County?
By product class, 0 of the county's wells (0%) are oil wells, 0 (0%) gas wells and 0 (0%) injection wells. Statewide the oil share is 0% and the gas share 0%. The deepest total depth published for a Mason County well is 9,311 ft, against 27,242 ft for Michigan as a whole. 100% of the county's wells carry coordinates and appear on the map.
How does Mason County compare with other Michigan counties?
Mason County has the 39th-most catalogued wells of the 81 Michigan counties with at least 25. The median Michigan county on WellCensus has 820 wells. The largest, Otsego County, has 5,579.
Who operates wells in Mason County?
175 distinct operators of record are linked to wells in Mason County. 100% of the county's wells carry a link to a canonical operator profile; the rest list no operator or a name not yet resolved. Each well's page names its operator where the state publishes one.
Wells in Mason County
🔒 Create a free account to export CSV| Well | API # / state ID | Status | Type | Operator |
|---|---|---|---|---|
| Logan 1 | 21-105-00001 | Plugged & abandoned | Other type | Logan Oil Co |
| Fee 41 | 21-105-00003 | Active | Other type | Occidental Chemical Corp |
| Standard Lime S-32 | 21-105-00016 | Active | Other type | Martin Marietta Magnesia Specialities LLC |
| Standard Lime S-33 | 21-105-00017 | Active | Other type | Martin Marietta Magnesia Specialities LLC |
| Standard Lime S-34 | 21-105-00018 | Active | Other type | Martin Marietta Magnesia Specialities LLC |
| Standard Lime S-22 | 21-105-00019 | Active | Other type | Martin Marietta Magnesia Specialities LLC |
| Standard Lime S-25 | 21-105-00020 | Active | Other type | Martin Marietta Magnesia Specialities LLC |
| Standard Lime S-23 | 21-105-00021 | Shut-in | Other type | Martin Marietta Magnesia Specialities LLC |
| Fee 24 | 21-105-00042 | Plugged & abandoned | Other type | Occidental Chemical Corp |
| Fee 8 | 21-105-00061 | Other status | Other type | Dow Chemical Co |
| Young, G. 2 | 21-105-00081 | Other status | Other type | Montgomery And Welsh And Pratt And Taggert |
| Martin Marietta S-35 | 21-105-00085 | Active | Other type | Martin Marietta Magnesia Specialities LLC |
| Fee 3 | 21-105-00089 | Plugged & abandoned | Other type | Occidental Chemical Corp |
| Fee 25 | 21-105-00090 | Active | Other type | Occidental Chemical Corp |
| Fee 26 | 21-105-00091 | Active | Other type | Occidental Chemical Corp |
| Fee 27 | 21-105-00092 | Plugged & abandoned | Other type | Dow Chemical Co |
| Fee 33 | 21-105-00093 | Plugged & abandoned | Other type | Occidental Chemical Corp |
| Fee 34 | 21-105-00094 | Plugged & abandoned | Other type | Occidental Chemical Corp |
| Welch-Taggert 1 | 21-105-00125 | Other status | Other type | Welch C A And Taggart W C |
| Martin Marietta S-36 | 21-105-00127 | Shut-in | Other type | Martin Marietta Magnesia Specialities LLC |
| Martin Marietta S-37 | 21-105-00128 | Active | Other type | Martin Marietta Magnesia Specialities LLC |
| Martin Marietta S-38 | 21-105-00138 | Active | Other type | Martin Marietta Magnesia Specialities LLC |
| The Dow Chemical Company Bd40 | 21-105-00141 | Other status | Other type | Dow Chemical Co |
| Barch Site S-39 | 21-105-00144 | Active | Other type | Martin Marietta Magnesia Specialities LLC |
| Martin Marietta S-41 | 21-105-00158 | Active | Other type | Martin Marietta Magnesia Specialities LLC |
A sample of the county’s wells — every catalogued well has its own page. Browse all 888 in search → (filter by operator, status and type, then export), or find a specific well on the live map.
Frequently asked questions
How many oil and gas wells are in Mason County, MI?
Mason County, Michigan has 888 catalogued oil & gas wells: 35 active, 162 plugged and 0 documented orphans.
How many orphaned wells are in Mason County?
No documented orphaned wells are currently recorded in Mason County, Michigan.
What share of wells in Mason County are plugged?
162 of Mason County's 888 catalogued wells (18%) are plugged & abandoned, compared with 16% across Michigan.
Which Michigan county has the most oil and gas wells?
Otsego County has the most catalogued wells of any Michigan county on WellCensus (5,579); Mason County ranks 39th with 888.
How many companies operate wells in Mason County?
175 distinct operators of record are linked to catalogued wells in Mason County, Michigan.
Nearby in the Michigan rankings
About this data
Source: Michigan EGLE well registry, plus the USGS United States Documented Orphaned Well Database (2026, doi 10.5066/P13FHBYG), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Oil & gas wells in Mason County, Michigan”, https://wellcensus.com/wells/michigan/mason (data as of October 10, 2026).