- Tri-State Supplies
- Triangle Production Systems
- Triple G Supply & Roustabout
- Triplex Service & Supply Co
- Trojan Rental & Sales Inc
- Twentieth Century Pipe & Equip
- Ty Products
- U S Geo Supply
- Undrey Engine & Pump Co
- Union Supply
- Uniquip Inc
- Unisource Supply Inc
- United Supply Co
- Universal Sales & Svc
- USA Tubulars
- Valley Oil Field Production
- Venture Pipe & Supply
- Vetco Gray Inc
- Vista Sales & Svc Inc
- W B Pump & Supply Co
- W B Supply Co
- W B Supply Co
- W B Supply Co
- W B Supply Co
- W B Supply Co
- W B Supply Co
- Waggoner Supply Inc
- Waggoner Supply Inc
- Warrior Supply Inc
- Waukesha-Pearce Industries Inc
- Wayne Moore Pipe Supply Co
- Wayne Moore Pipe Supply Co
- WDI Acadiana
- Weatherford
- Weatherford Wellhead
- Weatherford Wellhead Systems
- Wedron-Silica
- Well Service & Supply
- Well Service & Supply
- Weslaco Bicultural Museum Scty
- Weslaco Museum
- Western Drilling Tool & Supply
- Western Energy Sales
- Western Energy Sales
- Whitco Supply
- White Supply Co
- Wilbur Davis Oil Field Equip
- Wildcat Pump & Supply
- Wildcat Pump & Supply Inc
- Wilsar Sales & Svc Inc
- Wilsar Sales & Svc Inc
- Wilson
- Wilson
- Wilson
- Wilson
- Wilson
- Wilson Industries Inc
- Wilson Pipe & Supply Inc
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wilson Supply Co
- Wise Supply Co
- Wise Supply Co Inc
- Woodward Hull Inc
- Woodward Spool & Slingline
- Worldwide Oilfield Machine
- Wyoming Service & Supply
- X-Chem Inc
- Young Oilfield Supply Inc
