Greylock Prod
Operator of record for 156 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
Greylock Prod is the operator of record for 156 catalogued U.S. oil & gas wells in 1 state. 143 (92%) are active, 0 (0%) plugged & abandoned. Its largest concentration is in Pennsylvania, with 156 wells (100% of its portfolio).
Wells operated
156
Active
143
Plugged
0
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Pennsylvania | 156 |
Well mix
- Oil wells
- 0
- Gas wells
- 156
- Shut-in
- 0
- Active share
- 92%
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Claim your operator profileWhere does Greylock Prod operate?
Greylock Prod's catalogued wells are spread across 1 state: Pennsylvania (156). Its 156 Pennsylvania wells are 0.1% 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 Greylock Prod’s wells are active, plugged or orphaned?
92% of Greylock Prod's catalogued wells are active, 63 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 Greylock Prod operate?
By product class, 0 (0%) are oil wells and 156 (100%) gas wells; nationally the shares are 43% and 17%.
Notable wells operated by Greylock Prod
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Gribble Unit 6mh | 37-059-25347 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
| Mohr A 4mh-N | 37-059-25721 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
| Hoge/Noce 3mh | 37-059-25442 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
| Henderson/King 2mh | 37-059-25125 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
| Skib 6mh | 37-059-25206 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
| Skib 3mh | 37-059-25210 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
| Penneco/Morrow 2mh | 37-059-25268 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
| Pechin Leasing 2mh | 37-059-25662 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
| Sharpnack 1mh-S | 37-059-25939 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
| Hoge/Noce 2mh | 37-059-25389 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
| Cree 5mh | 37-059-25490 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
| Sharpnack 4mh-S | 37-059-25942 | Active | Gas | Greene, PA | Greylock Prod LLC | — |
Deepest first where depth is published. See all 156 wells →
Frequently asked questions
How many wells does Greylock Prod operate?
Greylock Prod is the operator of record for 156 catalogued oil & gas wells, with the largest concentration in Pennsylvania (156). Only wells in states WellCensus has ingested are counted.
How many of Greylock Prod's wells are still active?
143 of Greylock Prod's catalogued wells are active; 0 are plugged & abandoned.
In which states does Greylock Prod operate wells?
Greylock Prod is the operator of record for wells in Pennsylvania (156).
Does Greylock Prod operate mostly oil or gas wells?
0 of Greylock Prod's catalogued wells are oil wells and 156 are gas wells; the rest are injection, service or unclassified wells.
Where Greylock Prod'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, “Greylock Prod — well portfolio”, https://wellcensus.com/operators/greylock-prod-104068 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).