Who is actually doing the work in Petroleum County, drawn from state well logs and county rosters, and how to get quotes.
Ranked by wells completed in the county over the last five years, from the well logs each company filed with the state. Recent work matters more than a long history.
| Company | Last 5 yrs | Last 10 yrs | Latest | Median depth |
|---|---|---|---|---|
| Central Drilling Inc | 5 | 11 | 2025 | 280 ft |
| Hole World Consulting Llc | 4 | 5 | 2023 | 1530 ft |
| Vidic Drilling Inc | 2 | 4 | 2022 | 310 ft |
| Singley Drilling | 1 | 2 | 2021 | 210 ft |
| Higgins Drilling Company | 1 | 1 | 2024 | 240 ft |
| Haz Tech Drilling Inc | 0 | 4 | 2020 | 20 ft |
| Gordon Drilling Inc | 0 | 4 | 2017 | 160 ft |
| Bertram Drilling Inc | 0 | 1 | 2020 | 375 ft |
| Aquasource Drilling Llc | 0 | 1 | 2020 | 2172 ft |
See all 9 drilling companies in Petroleum County →
Source: MBMG Ground Water Information Center well logs. Counts include only logs that name a company. Companies that have not filed a log here in ten years are left off.
Working near a stream? 310 permits in Petroleum County →
Septic permits in Montana are issued locally. Before anything else, call the Petroleum County sanitarian or environmental health office and ask for a site evaluation; on raw land it belongs before you close. Our septic guide explains what they will look for.
Tell us what you need. We'll send your request to up to three contractors who work in Petroleum County, and they contact you directly. Free for landowners.
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