W & W Production Company, General Partnership
W M Petroleum LLC
W. R. Williams, Inc.
W.D. Short Oil Co., LLC
W.R.A. Oil Co.
Wabash Energy Corporation
Wachtman-Schroeder, a General Partnership
Wachtman-Schroeder, a General Partnership
Walcher Oil, LC
Walcher, Wayne E.
Walker Tank Service, Inc
Walker, Ervin Gilbert
Walker, W. A.
WALLACE ENERGY, INC.
Walls, Charles A.
Walton, Tara
War Cry, LLC
Ward Feed Yard, Inc.
Ward Petroleum Corporation
Warren American Oil Company LLC
Warren, James E.
Watt, Larry
Watts Tank Truck Service, Inc.
Wausau Development Corporation
Webco Oil Company, Inc.
Weber Four Oil Co., Inc.
Webster Oil LLC
Wehmeyer, Gerald
Weigel Oil Company, LLC
Weinkauf Petroleum, Inc.
Welch, Robert
Well Tech Oil and Gas, Inc.
Wellstar Corporation
Wellwin Drilling Corporation
Werth Exploration Trust
West Place Crude, LLC
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West Plains Enterprises, Inc
Western Frontier Adventure, LLC
Western Operating Company
Western Pacific Farms, Inc.
Westgate Oil Company, Inc.
Westlake Energy Consultants, Inc.
Westmore Drilling Company, Inc.
WGP-KHC, LLC
Wheeler Oil Company
Whitaker Companies, Inc.
Whitco Petroleum, LP
White & Ellis Drilling, Inc.
White Eagle Resources Corp.
White Exploration, Inc.
White Hawk Oil Company, a General Partnership
White Hawk Oil Company, LLP
White Pine Petroleum Corporation
White, Edgar W.
White, Kenneth S.
WHITEHALL ENERGY CORP.
Whitetail Crude, Inc
Whitlow Energy, Inc.
Wichita Water, LLC
Widener, A.C. Farms, Inc.
Widrig Oil LLC
Wiesner, Tom Oil Operations
Wilcox Oil, LLC
Wilcox, Carole N.
Wild Colt Oil and Gas LLC
Wild Horse Resources, LLC
Wildcat Exploration LLC
Wildcat Oil & Gas LLC
Wildcat Resources
Wildhorse Operating Company
William G Smith Oil, LLC
WILLIAMS ENERGY MARKETING & TRADING CO
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Williams Oil Company
Williams Production RMT Company
Williams, M. A.
Williams, Paul M. and/or Judy A.
Williams, Raymond H.(deceased)
Williford Energy Company
Willis Energy
Wilson County Holdings LLC
Wilson, Mark D.
Wilson, Patricia J.
Wilson, Richard A.(deceased)
Wilton Petroleum, Inc.
Winder Oil Company
Windfall Oil, LLC
Wineland Oil - LLC
Winslow, Eddie
Winterscheid Oil, LLC
WM KS Energy Resources LLC
Woco, Inc.
Wolfe, Leslie
Wollard-Abbott Crude, a General Partnership
Wood Energy, Inc.
Wood, E. H., Jr.
Woods Oil
Woodway Oil & Gas I, LLC
Woolsey Operating Company, LLC
Woolsey Petroleum Corporation
Wortman Farms, LLC
WPX Energy Production, LLC
Wrestler, David L., a General Partnership
Wrestler, Ronald D., a General Partnership
Wurtz, Albert B.
Wynn-Crosby Operating, Ltd.
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