Operators · Last reported in August 2025
Grayson Mill Operating, LLC
Operator of record in the free NDIC Monthly Production Reports from November 2021 to August 2025, as GRAYSON MILL OPERATING, LLC.
Production in the monthly reports
Wells reporting oil, by month
Oil in the report, barrels a day
Flared share of its reported gas
Table: by year
Source: the free NDIC Monthly Production Reports, as first reported. Every figure is in this page's data file.
Wells today
34 oil and gas wells list Grayson Mill Operating, LLC as operator in the state's wells layer of November 6, 2026. The status codes are the Industrial Commission's.
| Status | Wells |
|---|---|
| Confidential | 1 |
| Plugged and abandoned | 2 |
Older wells are more often inactive or temporarily abandoned, so compare like periods, not totals. A well acquired from another operator is listed under its operator today.
Drilling and orders
| Year | Wells spudded |
|---|---|
| 2018 | 1 |
From the wells layer of November 6, 2026; wells it acquired are counted in the year they were spudded. 0 were spudded in the twelve months before the snapshot.
| Year | Orders |
|---|---|
| 2026 | 7 |
| 2025 | 7 |
| 2024 | 29 |
| 2023 | 21 |
| 2022 | 13 |
| 2021 | 1 |
From the project's index of signed NDIC orders: facts machine-extracted from the orders, not individually reviewed; applicant names matched to the report name.
Changes of operator of record
| Month | From | Wells |
|---|---|---|
| Sep 2023 | Ovintiv USA Inc. | 379 |
| Mar 2023 | EOG Resources, Inc. | 37 |
| Nov 2021 | Equinor Energy LP | 706 |
| Month | To | Wells |
|---|---|---|
| Sep 2025 | Devon Energy Williston, L.L.C. | 1,333 |
A change of operator of record is what the monthly reports show; it does not say why. Sales, mergers, renamed legal entities and new contract operators all look the same. Months link to that month's Pulse issue.
Notes
The operator of record is the company named on the state's monthly report rows; parent companies and ownership are not shown. Volumes are those printed for its wells, as first reported: confidential wells are withheld, and before May 2015 wells in unitized pools appear only inside unit totals. Status codes are the Industrial Commission's, as its wells layer lists them; they are not a judgement of compliance. Nothing here is a financial, legal or engineering assessment.
Built November 8, 2026 from reports through August 2026 and the wells layer of November 6, 2026. Corrections: see contact.