101 | Held By Production, Inc. | Houston, TX 77251 | Oil & Gas Operator | May 1996 |
102 | Helena Production Corp | | Oil & Gas Operator | Dec 1991 |
103 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
104 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Dec 2023 |
105 | Hemco Development, LLC | Dallas, TX 75201 | Oil & Gas Operator | Nov 2020 |
106 | Hemus, Inc. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 1994 |
107 | Henderson Oil & Gas | | Oil Operator | Sep 1990 |
108 | Henderson Pet Corp Of Delaware | | Oil & Gas Operator | Nov 2019 |
109 | Henderson Petroleum Corp | San Angelo, TX 76906 | Oil & Gas Operator | Jul 2013 |
110 | Henergy Oil & Gas LLC | | Oil Operator | Jan 2024 |
111 | Henry Production Company, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Sep 2019 |
112 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
113 | Herbert J. Schmitz | | Oil & Gas Operator | Dec 1987 |
114 | Herbst Resources, Inc. | Mandeville, LA 70448 | Oil & Gas Operator | Aug 2003 |
115 | Herd Producing Company, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
116 | Heritage Energy Company | | Oil & Gas Operator | Jun 2001 |
117 | Heritage Operating Co., Inc. The | Stafford, TX 77497 | Oil & Gas Operator | May 1997 |
118 | Herlin Et Al | | Oil & Gas Operator | Mar 1985 |
119 | Herman Fields | | Oil & Gas Operator | May 1989 |
120 | Herring Production Co | | Oil & Gas Operator | Mar 1992 |
121 | Hess Corporation, A De Corp. | | Oil & Gas Operator | Oct 2006 |
122 | Hexagon Oil And Gas Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Apr 2024 |
123 | HGH Energy, Inc. | | Oil & Gas Operator | Jun 2001 |
124 | Hibbard-Frost-Smith | | Oil & Gas Operator | Apr 1990 |
125 | Hicks Production Co. | | Oil & Gas Operator | Apr 1991 |
126 | High-Hope Oil And Gas, Inc | | Oil & Gas Operator | Mar 2017 |
127 | Highland Minerals, Inc. | Tulsa, OK 74145-7627 | Oil & Gas Operator | Apr 2015 |
128 | Highland Resources, Inc. | | Oil & Gas Operator | Dec 2004 |
129 | Highlander Oil & Gas Assets LLC | | Gas Operator | Jan 2024 |
130 | Highlands Operating Co., Inc. | | Oil & Gas Operator | May 1990 |
131 | Highmark Energy Operating, LLC | Poynor, TX 75782 | Oil & Gas Operator | Apr 2024 |
132 | Hilburn Ind., Inc. | | Oil Operator | Jan 1978 |
133 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Apr 2024 |
134 | Hill Production | | Oil & Gas Operator | Nov 1981 |
135 | Hill Production Co Inc-Wisconsin | Humble, TX 77347 | Oil & Gas Operator | Jun 1993 |
136 | Hilliard Oil & Gas Inc | New Orleans, LA 70112 | Oil & Gas Operator | May 2001 |
137 | Hilliard Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2009 |
138 | Hillside Oil & Gas, LLC | Midland, TX 79708 | Oil & Gas Operator | Apr 2016 |
139 | Hilty Interests, Inc. | Kerrville, TX 78028 | Oil & Gas Operator | Jun 1989 |
140 | Hinton Well Servicing, Inc. | | Oil Operator | Feb 2008 |
141 | HK Energy Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | May 2023 |
142 | Hobbs Oil Co. | | Oil Operator | Dec 1999 |
143 | Hobbs Production LLC | | Oil Operator | Mar 2023 |
144 | Hochendel Consultants | | Oil & Gas Operator | Jul 1995 |
145 | Hogan Drilling Company, Inc. | | Oil & Gas Operator | Mar 1981 |
146 | Hogan Energy Corporation | | Oil & Gas Operator | Oct 1999 |
147 | Hogan Exploration, Inc. | | Oil & Gas Operator | Mar 2000 |
148 | Holden Energy Corporation | Ardmore, OK 73401 | Oil & Gas Operator | Mar 2015 |
149 | Holland Production Co | | Oil Operator | Aug 1982 |
150 | Hollenshead Oil Co. | | Oil & Gas Operator | Mar 1992 |
151 | Holston-GR. Sou. Oil & Gas Co. | | Oil & Gas Operator | Mar 1981 |
152 | Home Petroleum Corp | Victoria, TX 77902 | Oil & Gas Operator | Apr 2024 |
153 | Homer D. Oliver | | Gas Operator | Sep 1998 |
154 | Homer E. Hines, Inc. | | Oil Operator | Sep 1978 |
155 | Hondo Operating, Inc. | | Oil & Gas Operator | Sep 1997 |
156 | Hootkins-Smith,La LTD. | | Gas Operator | Jun 1985 |
157 | Hope Oil Inc | Midland, TX 79702 | Oil & Gas Operator | Oct 2021 |
158 | Horizon Expl. & Dev. Co., Inc. | | Oil & Gas Operator | Jun 1995 |
159 | Horton & Freeman | | Oil Operator | Apr 1983 |
160 | Hosston Oil Inc. | | Oil Operator | Dec 1993 |
161 | Hou-Tex Oil And Gas | | Oil & Gas Operator | Jul 1982 |
162 | Hou-Tex, Inc. | Houston, TX 77224 | Oil & Gas Operator | Jun 2001 |
163 | Houma Operating Company, Inc. | | Oil & Gas Operator | Jun 1998 |
164 | Houma Salt Water Disposal Corp | | Oil Operator | Dec 2020 |
165 | Houston Energy & Dev. Inc. | | Oil & Gas Operator | Mar 1994 |
166 | Houston Energy Operating, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jul 2020 |
167 | Houston Energy, L.P. | Houston, TX 77002 | Oil & Gas Operator | Jan 2014 |
168 | Houston Oil & Gas Company, Inc. | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
169 | Houston Oil & Minerals Corp. | Houston, TX 77002 | Oil & Gas Operator | Aug 1996 |
170 | Houston Oil Fields Company | | Oil & Gas Operator | Apr 1987 |
171 | Howard'S Well Service | | Oil Operator | Jul 2007 |
172 | Howell & Sandlin, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jan 2001 |
173 | Howell Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Oct 2015 |
174 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
175 | HS Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2005 |
176 | Hsumy Oil & Gas Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2007 |
177 | Hubco Exploration Inc. | Houston, TX 77073 | Oil & Gas Operator | Sep 2002 |
178 | Huey Dean | | Oil Operator | Oct 2000 |
179 | Huffco Petroleum Corporation | | Oil & Gas Operator | Jul 1988 |
180 | Huggs Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2003 |
181 | Huggs Inc. & Bec, Et Al | | Oil & Gas Operator | Feb 1998 |
182 | Huggs Incorporated, Et Al | | Oil & Gas Operator | Feb 1998 |
183 | Hugh A. Hawthorne, Et Al | | Oil & Gas Operator | Dec 1978 |
184 | Hughes & Hughes | | Oil & Gas Operator | May 1984 |
185 | Hughes & New-D. Braswell | | Oil & Gas Operator | Jun 1983 |
186 | Hughes Denny Offshore Expl Inc | | Oil & Gas Operator | Nov 1988 |
187 | Hughes Eastern Corporation | Ridgeland, MS 39157 | Oil & Gas Operator | Dec 2023 |
188 | Hughes Eastern Petroleum, Inc. | | Oil & Gas Operator | Apr 1993 |
189 | Hughes Eastern Petroleum, LTD. | | Oil & Gas Operator | Jun 1986 |
190 | Hughes Supplies, Inc. | Greenwood, LA 71033 | Oil & Gas Operator | Jul 2019 |
191 | Hughes, Wise & Assoc., Inc | | Oil Operator | Jul 1987 |
192 | Hughes-Denny Petroleum Co.,Inc | | Oil & Gas Operator | Dec 1987 |
193 | Hughes-Leckelt-Maybrier PRDCRS | | Oil Operator | Mar 2022 |
194 | Hughes-Nicklaus Oil Co., LTD. | | Oil & Gas Operator | Feb 1986 |
195 | Hunt Brothers Producing Co Inc | Redding, CA 96049-2516 | Oil & Gas Operator | Sep 2012 |
196 | Hunt Energy Corporation | | Oil & Gas Operator | Feb 2002 |
197 | Hunt Industries, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2000 |
198 | Hunt Investment Corporation | | Oil & Gas Operator | Jun 1989 |
199 | Hunt Oil Co., Et Al | | Oil & Gas Operator | Nov 1992 |
200 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Apr 2024 |