| Business | Phone |
| Westside Machine Shop Inc 4933 Highway 85, Williston 58801 | (701) 577-4800 |
| Williston Basin Inspection Svc 223 1st St E, Williston 58801 | (701) 572-0402 |
| Wisco 4903 2nd Ave W, Williston 58801 | (701) 572-2135 |
| A & K Rental Inc 13942 W Front St, Williston 58801 | (701) 572-9766 |
| Viking Inspection Inc Highway 85 S, Williston 58801 | (701) 572-9261 |
| Weatherford Als 2304 4th Ave W, Williston 58801 | (701) 774-1030 |
| American Casing & Equipment 2721 W Front St, Williston 58801 | (701) 572-4573 |
| B J's Drill Stem Testing 1637 44th St W, Williston 58801 | (701) 572-7102 |
| Baker Oil Tools 2920 1st Ave W, Williston 58801 | (701) 774-8331 |
| Balco Three Inc 611 11th St E, Williston 58801 | (701) 572-0052 |
| Basin Concrete Inc 2302 18th Cir W, Williston 58801 | (701) 572-7295 |
| Basin Filtration Systems 13565 57th St Nw, Williston 58801 | (701) 774-1283 |
| Basin Tools & Svc Inc 2619 University Ave, Williston 58801 | (701) 774-0059 |
| Total Bit Svc 3306 1st Ave W, Williston 58801 | (701) 572-4593 |
| Tuboscope County Rd 7, Williston 58801 | (701) 572-7918 |
| Tuboscope N County Road 7, Williston 58801 | (701) 774-0454 |
| Swaco Geolograph Co 410 22nd St W, Williston 58801 | (701) 572-7731 |
| Tga Bits 2726 2nd Ave W, Williston 58801 | (701) 774-2811 |
| Capital T Consulting Inc 13380 57th St Nw # 111, Williston 58801 | (701) 572-8931 |
| S K & Oil Field Svc Inc 4513 16th Ave W, Williston 58801 | (701) 572-1474 |
| Sanjel Usa Inc 4851 Highway 85, Williston 58801 | (701) 774-8699 |
| Dan's Production Svc 636 E Broadway, Williston 58801 | (701) 774-3273 |
| Production Analysis Inc 1411 W Dakota Pkwy, Williston 58801 | (701) 774-3643 |
| Production Service Co 605 E Broadway, Williston 58801 | (701) 572-5333 |
| Dowell 12 12th Ave E, Williston 58801 | (701) 572-8393 |
| Petroleum Services 2502 4th Ave W, Williston 58801 | (701) 572-2487 |
| Plains Marketing Highway 2 & 85 Wamp;, Williston 58801 | (701) 774-8256 |
| Prairie Petro Chem Of America 3119 1st Ave W, Williston 58801 | (701) 774-2436 |
| Oilind Safety 2920 1st Ave W, Williston 58801 | (701) 572-2071 |
| First Energy Svc Co 14082 W Front St, Williston 58801 | (701) 774-0127 |
| Mon Dak Tank Inc 3820 2nd Ave W, Williston 58801 | (701) 774-2925 |
| Nabors Drilling Usa Highway 2 W, Williston 58801 | (701) 572-6704 |
| Natco National Tank Co 4607 2nd Ave W, Williston 58801 | (701) 774-0341 |
| Gyrodata 4931 Highway 85, Williston 58801 | (701) 572-0670 |
| H & L Rental & Well Svc Inc 4977b 140th Ave Nw, Williston 58801 | (701) 774-3063 |
| H & R Well Svc 5716 2nd Ave W, Williston 58801 | (701) 572-4022 |
| Hanson Hot Oil Svc 13877 Highway 2, Williston 58801 | (701) 572-9822 |
| Hexom Earth Construction 13982 W Front St, Williston 58801 | (701) 774-8511 |
| Hughes Christensen 2916 1st Ave W, Williston 58801 | (701) 774-0375 |
| Hydro Static Tubing Testers 922 5th St E, Williston 58801 | (701) 572-7261 |
| Jacam Chemical Williston 58801 | (701) 770-6580 |
| Joe's Casing & Drilling 3306 1st Ave W, Williston 58801 | (701) 572-6487 |