| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | H2ox Operating LLC | Oil Operator | Jan 2024 | |
| 2 | Ham Oil Company, LLC | Oil Operator | Sep 2022 | |
| 3 | Harper Joe Howard Dba J H Field Service | Oil & Gas Operator | Jan 2024 | |
| 4 | Heartlands Development Co Inc | Bristow, OK 74010-3826 | Oil & Gas Operator | May 2017 |
| 5 | Hendrickson Lester | Delaware, OK 74027-9715 | Oil Operator | Mar 2015 |
| 6 | High Sierra Crude Oil& Marketing LLC | Ardmore, OK 73401 | Oil Operator | Nov 2013 |
| 7 | Highfill Bob W | Claremore, OK 74018-2595 | Oil Operator | Jun 2005 |
| 8 | Hy-Carb Energy Inc | Oil & Gas Operator | Feb 2009 |