The drilling companies that have actually completed wells within 15 miles of Olney, ranked by how many, from the well logs each company filed with the state. Olney is in Flathead County.
In the last five years, 219 wells were completed within 15 miles of Olney, by 22 different drilling companies. The most active was Davis Brothers Drilling, with 49. The three busiest companies drilled 56 percent of them, with the rest spread across smaller outfits.
| Company | Wells within 15 mi | Latest | Closest well |
|---|---|---|---|
| Davis Brothers Drilling | 49 | 2026 | 0 mi |
| Coldwater Drilling And Pumps | 43 | 2026 | 6 mi |
| Billmayer Drilling | 29 | 2026 | 6 mi |
| Chambers Drilling Company | 19 | 2026 | 7 mi |
| Glazier Drilling | 19 | 2026 | 8 mi |
| Oh Well Drilling And Pump | 16 | 2025 | 6 mi |
| Rm Drilling And Well Services | 8 | 2026 | 8 mi |
| Okeefe Drilling Co | 6 | 2025 | 11 mi |
| Boland Drilling | 5 | 2024 | 14 mi |
| Post Pump And Drilling Llc | 4 | 2023 | 6 mi |
| Haz Tech Drilling Inc | 3 | 2023 | 15 mi |
| Mbmg | 3 | 2024 | 8 mi |
| Aquasource Drilling Llc | 2 | 2023 | 11 mi |
| Certified Well And Pump | 2 | 2022 | 12 mi |
| Thomas, Dean, And Hoskins, Inc. | 2 | 2022 | 14 mi |
| West Central Environmental Consultants | 2 | 2024 | 14 mi |
| Aquasource Inc Llc | 1 | 2022 | 12 mi |
| Cyclone Drilling And Pump Llc | 1 | 2026 | 0 mi |
| Gove Contracting | 1 | 2024 | 11 mi |
| Stinger Drilling | 1 | 2022 | 9 mi |
| Water Resource Services | 1 | 2025 | 13 mi |
| Western Water Wells | 1 | 2026 | 13 mi |
Source: MBMG Ground Water Information Center well logs completed 2021 to 2026, counted by distance from the center of Olney. Only logs that name a company are ranked. This is a count of public records, not a recommendation; see how to check a driller before you hire. For depth, yield and water level near a specific property, see Montana Water Report.
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