Best well drillers in Mountrail County, North Dakota

Not a pay-to-play list: these are the 48 drilling companies with wells on record in Mountrail County, ranked by wells actually drilled here — 1,499 logged wells in the North Dakota Department of Water Resources drillers log file (records as of 2026-08-25). Every number links back to the public record.

48companies on record

21active since 2022

1,499wells in county record

#	Company	In Mountrail Co. since 2016	All-time in county	Statewide
1	Thompson Drilling	30	35	1,674
2	Stumvoll Drilling	25	45	1,028
3	Dennis Water Well Drilling	15	644	1,280
4	S & S Drilling	15	19	303
5	Agri Industries	11	65	786
6	Iba Drilling Company, Inc.	10	10	50
7	Mariner's Well Drilling	6	55	439
8	Mariner Water Well Service	4	4	72
9	Manikowski Well Drilling	3	7	669
10	Thein Well Co.	3	6	26
11	Erck Well Drilling	2	10	1,147
12	Illand Mariner Water Well Service	2	3	28
13	Brase Drilling LLC	2	2	486
14	Lien Well Service	1	36	144
15	Kamoni Water Wells	1	7	1,672
16	Gregory Water & Energy Inc.	1	1	625
17	Eews, Inc.	1	1	25
18	Depth Well Drilling	1	1	80
19	Earth Energy & Water	1	1	58
20	Flaherty Drilling	—	162	207
21	Crowder Well Drilling	—	117	131
22	Tandeski Water Well Drilling	—	55	242
23	Crowder-Dennis Well Drilling	—	35	43
24	Mann Drilling	—	31	638
25	Lakeview Drilling, Inc.	—	23	67
26	Circle M Drilling	—	22	274
27	Ltp Enterprises	—	21	1,549
28	Mariner Drilling	—	14	89
29	Stemen Drilling	—	9	72
30	Sax Well Drilling	—	7	105
31	Dan's Drilling	—	7	34
32	Gregory Drilling	—	5	975
33	Don & Keith Erck	—	4	670
34	Diamond M Drilling	—	4	50
35	C. A. Simpson & Son	—	3	585
36	Finkbeiner Drilling	—	3	363
37	Russell Drilling	—	3	345
38	Peterson Well Drilling	—	3	71
39	Braun Intertec	—	3	33
40	Mohl Drilling	—	2	483
41	L.t.p. Enterprises, Inc.	—	2	76
42	Farmers Supply Co.	—	2	480
43	Boyce Drilling	—	2	354
44	Church Well Boring	—	2	148
45	Stone Drilling	—	2	72
46	Kieson Drilling	—	2	63
47	Milo Burwick & Sons	—	1	261
48	Mann-Stumvoll Drilling	—	1	77

Ranked by wells drilled in Mountrail County since 2016 (then all-time), from the full ND DWR record. A ★ marks a featured sponsor — sponsors must appear in the county record to be listed, and the ranking below them is never reordered.

Who drills the most wells in Mountrail County?

Thompson Drilling has drilled the most Mountrail County wells in the recent record — 30 since 2016, 35 in the county all-time.

How many well drilling companies work in Mountrail County?

48 companies in the ND DWR record have drilled wells in Mountrail County; 21 of them have drilled somewhere in North Dakota since 2022. Smaller operators below the record threshold may also serve the area.

Log counts, drilling dates, and the full driller ranking for this county live on the Mountrail County wells page.

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Free to claim · built from ND DWR public well-log records.