| BASA Resources Inc. | Texas | 2018-01-10 | 2026-12-31 |
| BHP Billiton Petroleum | Texas | 2018-01-10 | 2019-12-31 |
| BP-29 Investments, LP | Texas | 2019-01-08 | 2026-12-31 |
| Black Bear Minerals | Texas | 2026-09-10 | 2026-12-31 |
| Brown Pruitt Wambsganss Ferrill & Dean PC | Texas | 2018-01-10 | 2022-12-31 |
| Buckeye Partners | Texas | 2026-01-15 | 2026-12-31 |
| Caturus HoldCo, LLC | Texas | 2026-01-15 | 2026-12-31 |
| Challenger Water Solutions LLC | Texas | 2018-10-05 | 2024-12-31 |
| Cheniere Energy, Inc. | Texas | 2019-03-05 | 2019-12-31 |
| City of Portland | Texas | 2020-01-31 | 2026-12-31 |
| Delek Logistics | Texas | 2025-01-17 | 2026-12-31 |
| Emission Control Associates, LLC | Texas | 2018-10-05 | 2020-12-31 |
| Endurance Lift Solutions, LLC, a wholly-owned subsidiary of Synergy Energy Holdings, LLC | Texas | 2020-05-01 | 2026-12-31 |
| Fountain Quail Energy Services | Texas | 2018-01-10 | 2019-12-31 |
| Friends of the Preserve | Texas | 2022-06-07 | 2026-12-31 |
| Gateway Foundation - Texas, Inc. c/o Gateway Foundation, Inc. | Texas | 2021-05-25 | 2021-12-31 |
| H20 Midstream LLC | Texas | 2018-05-10 | 2024-12-31 |
| Halliburton | Texas | 2018-10-05 | 2026-12-31 |
| Honeywell International, Inc. | Texas | 2022-06-07 | 2023-12-31 |
| LRG Energy LLC (LRG) | Texas | 2024-08-20 | 2026-12-31 |
| Linn Energy | Texas | 2018-01-10 | 2018-12-31 |
| Maverick ORRI, LP - Owned & Operated by B-29 Investments, LP & Joint Resources Co. | Texas | 2019-01-08 | 2026-12-31 |
| Midcoast Energy, LLC | Texas | 2020-11-10 | 2021-12-31 |
| Milestone Environmental Services, LLC | Texas | 2024-10-04 | 2026-12-31 |
| National Surface & Minerals, LLC - Owned & Operated by B-29 Investments, LP & Joint Resources Co. | Texas | 2019-01-08 | 2026-12-31 |
| Newfield Exploration Company | Texas | 2018-01-10 | 2019-12-31 |
| North Texas Carbon LLC | Texas | 2026-07-20 | 2026-12-31 |
| Nueces County Coastal Parks System | Texas | 2018-01-10 | 2019-12-31 |
| Pilot Water Solutions | Texas | 2023-08-04 | 2026-12-31 |
| Premier Pediatric Therapy | Texas | 2023-08-04 | 2025-12-31 |
| QEP Resources, Inc. | Texas | 2018-01-10 | 2021-12-31 |
| R360 Environmental Solutions, LLC, a wholly owned subsidiary of Waste Connections, Inc. | Texas | 2018-01-10 | 2023-12-31 |
| Range Resources Corporation | Texas | 2018-01-10 | 2026-12-31 |
| Recycling Council of Texas | Texas | 2018-01-10 | 2018-12-31 |
| SM Energy | Texas | 2018-01-10 | 2018-12-31 |
| San Patricio County | Texas | 2019-03-26 | 2026-12-31 |
| Save Lost Creek | Texas | 2021-03-17 | 2022-12-31 |
| Select Energy Services | Texas | 2018-01-10 | 2026-12-31 |
| Silver Creek Oil & Gas - Owned & Operated by B-29 Investments, LP & Joint Resources Co. | Texas | 2019-01-08 | 2026-12-31 |
| Surge Energy a wholly owned subsidiary of Shandong Xinchao Energy Corp. Ltd. a public traded company | Texas | 2020-01-16 | 2023-12-31 |
| TSS, Inc. | Texas | 2018-01-10 | 2019-12-31 |
| Texas Royalty Council | Texas | 2019-04-10 | 2022-12-31 |
| The Gap | Texas | 2021-04-27 | 2026-12-31 |
| United Surface & Minerals, LLC - Owned & Operated by B-29 Investments, LP & Joint Resources Co. | Texas | 2019-01-08 | 2026-12-31 |
| BP AMERICA INC. | Texas | 2020-11-10 | 2026-12-31 |