Mac Mar
Operator of record for 13 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Mac Mar is the operator of record for 13 catalogued U.S. oil & gas wells in 1 state. 11 (85%) are active, 0 (0%) plugged & abandoned. Its largest concentration is in Pennsylvania, with 13 wells (100% of its portfolio).
Wells operated
13
Active
11
Plugged
0
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Pennsylvania | 13 |
Well mix
- Oil wells
- 0
- Gas wells
- 13
- Shut-in
- 0
- Active share
- 85%
Is this your company?
Claim Mac Mar to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Mac Mar operate?
Mac Mar's catalogued wells are spread across 1 state: Pennsylvania (13). Its 13 Pennsylvania wells are 0.0% of the 224,189 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 Mac Mar’s wells are active, plugged or orphaned?
85% of Mac Mar's catalogued wells are active, 56 percentage points above the national share of 29%. 0% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Mac Mar operate?
By product class, 0 (0%) are oil wells and 13 (100%) gas wells; nationally the shares are 43% and 17%. The wells listed below sit in Westmoreland (PA) and Indiana (PA).
Notable wells operated by Mac Mar
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Thomas Maher 1005 | 37-129-21733 | Active | Gas | Westmoreland, PA | Mac Mar Inc | — |
| Paul Edsall Maria Trimble Tract 1006 | 37-129-21736 | Active | Gas | Westmoreland, PA | Mac Mar Inc | — |
| Himler 1 | 37-129-23208 | Active | Gas | Westmoreland, PA | Mac Mar Inc | — |
| Wm C Widdowson 1 | 37-063-21193 | Active | Gas | Indiana, PA | Mac Mar Inc | — |
| Davis (Lydia) 2004 | 37-063-25681 | Active | Gas | Indiana, PA | Mac Mar Inc | — |
| Frank M. Dominick Et Ux 1 | 37-129-23200 | Other status | Gas | Westmoreland, PA | Mac Mar Inc | — |
| Charles Bartosh 1 | 37-063-25198 | Active | Gas | Indiana, PA | Mac Mar Inc | — |
| Joseph Pellegrene 1 | 37-063-25287 | Active | Gas | Indiana, PA | Mac Mar Inc | — |
| Joseph Pellegrene 2 | 37-063-25288 | Active | Gas | Indiana, PA | Mac Mar Inc | — |
| Waltaer M Campbell 1 | 37-063-25429 | Active | Gas | Indiana, PA | Mac Mar Inc | — |
| Paul W. Horne, Et Ux 1 | 37-129-23196 | Other status | Gas | Westmoreland, PA | Mac Mar Inc | — |
| Frank M. Dominick Et Ux 1 | 37-129-23350 | Active | Gas | Westmoreland, PA | Mac Mar Inc | — |
Deepest first where depth is published. See all 13 wells →
Frequently asked questions
How many wells does Mac Mar operate?
Mac Mar is the operator of record for 13 catalogued oil & gas wells, with the largest concentration in Pennsylvania (13). Only wells in states WellCensus has ingested are counted.
How many of Mac Mar's wells are still active?
11 of Mac Mar's catalogued wells are active; 0 are plugged & abandoned.
In which states does Mac Mar operate wells?
Mac Mar is the operator of record for wells in Pennsylvania (13).
Does Mac Mar operate mostly oil or gas wells?
0 of Mac Mar's catalogued wells are oil wells and 13 are gas wells; the rest are injection, service or unclassified wells.
Where Mac Mar'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, “Mac Mar — well portfolio”, https://wellcensus.com/operators/mac-mar-106715 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).