H & B Petroleum Corp.
H & C Oil Operating Inc.
H & D Exploration LLC
H & H Business, LLC
H & H Oil Co.
H & L Operating Co.
H & L Oprerating Company LLP
H & M Packers Serv. L.L.C.
H & M Petroleum Corporation
H & S Oil Co., LLC
H&G Pulling & Rotary Drilling, Inc.
H&H DEVELOPMENT LLC
H&W Oil Company
H-D Oilfield Service, Inc.
H. H. Blair Oil Company, Inc.
H. I., Inc.
Haack Operating Company
Haas Petroleum, LLC
Haas, John L.(Deceased)
Habit Petroleum
Habit Petroleum, LLC
Had-A-Call Oil
Haddock, Jack L.
Haffner, Dan
Haile, Guy W.
Hale, L.D.
Hall Oil Company
Hall, Michael Wayne
Hallelujah-El Shaddai Oil, LLC
Hallwood Petroleum, Inc.
Hamby Oil LLC
Hammer MacLean ETAL
Hammerschmidt, William E
Har-Ken Agent, OK
HarCon Energy, LLC
Hardin Irrevocable Trust
Harper Oil Co.
Harris Oil & Gas Company
Harris, David
Hart Energies, LLC
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Hart, Nick and Connie
Hartman Oil Co., Inc.
Harvey E. Yates Company
Hat Creek Cattle Company, a General Partnership
Haul-Pac, Inc.
Hawkins Oil, LLC
Hawkins, James F.
Hayden Operating
Hayes Oil & Gas LLC
Hazen, Ty Anthony
HB Energy LLC
HDH Resources, Inc.
Heartland Oil, Inc.
Heath, Mark
Hegwald, Jacob L.
Heller, Phillip & Charlene
Helm Energy Company
Helmerich & Payne, Inc.
Hembree Oil Production, LLC
Henderson, Chris
Hensley Oil Company LLC
Herman Krug - Oil Operations
Herman L. Loeb, LLC
Hermreck Oil Company
Hertel Oil Company LLC
Hess Oil Company
Hesse Petroleum Co.,L.L.C.
Hessert Loc Inc
Hewitt Energy Group, Inc.
Heyco Development Corporation
Hi-Kat Petroleum Company
Higginbottom Engineering, Inc.
High Bluff Operating LLC
High Plains Production, LLC
High Plains Production, LLC
Hill Oil and Gas Co., Inc.
Hillenburg Oil Co., a General Partnership
HJ, Inc.
HKW Oil Company, Inc.
Hodges Oil
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Hodges, Dennis D. and Peggy D.
Hoehn Oil LLC
Hoener, Ross
Hoepker, Larry
Hoff, Lawrence A.
Hoffman Oil, Inc.
Hoffman, Brian
Holcomb Oil and Gas, Inc.
Holland, Nancy G.
Holt, Carol
Holtom, Bill, A General Partnership
Honey Well, LLC
Hopper Oil Co., Inc.
Horseshoe Operating, Inc.
Horst Oil, LLC
Horton, Jack
Horton, John
Housel, John R. Sr.
Howell Oil Co.
Howell Oil Company, Inc.
HPH Kansas LLC
HRM Resources II, LLC
Huber Oil Company, a General Partnership
Huber, J.M. Corporation
Hughes Drilling Co, a General Partnership
Hugoton Energy Corporation
Humerickhouse Oil, LLC
Humerickhouse, Donald L.
Hummingbird Oil, LLC
Hummon Corporation
Hunt Oil, LLC
Huntington Energy, LLC
Hupfer Operating, Inc.
Hurt, Sue
Hutchinson Oil Co.
Hutton, Charles N., Sr.
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