| Headlee Devonian Unit O-10-30921 | Four Star Oil and Gas Company only | Headlee, N. (Devonian) | Ector | 1 | 30.4K | 914K | Jan 1993 – Feb 2009 |
| Headlee Devonian Unit G-10-19959 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Oct 2023 |
| Headlee Devonian Unit G-10-19988 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Jan 2024 |
| Headlee Devonian Unit G-10-19961 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Sep 2023 |
| Headlee Devonian Unit G-10-19962 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Jan 2023 |
| Headlee Devonian Unit G-10-19963 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Aug 2023 |
| Headlee Devonian Unit G-10-19972 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Aug 2023 |
| Headlee Devonian Unit G-10-19965 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – May 2019 |
| Headlee Devonian Unit G-10-19966 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Dec 2019 |
| Headlee Devonian Unit G-10-19967 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Dec 2019 |
| Headlee Devonian Unit G-10-19968 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Oct 2021 |
| Headlee Devonian Unit G-10-19969 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Nov 2019 |
| Headlee Devonian Unit G-10-19970 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Aug 2023 |
| Headlee Devonian Unit G-10-19971 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Oct 2019 |
| Headlee Devonian Unit G-10-19964 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Jun 2023 |
| Headlee Devonian Unit G-10-19973 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Aug 2023 |
| Headlee Devonian Unit G-10-19974 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Jan 2021 |
| Headlee Devonian Unit G-10-19975 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Jul 2026 |
| Headlee Devonian Unit G-10-19976 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Aug 2020 |
| Headlee Devonian Unit G-10-19977 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Sep 2021 |
| Headlee Devonian Unit G-10-19978 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Nov 2020 |
| Headlee Devonian Unit G-10-19979 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Sep 2020 |
| Headlee Devonian Unit G-10-19980 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Sep 2019 |
| Headlee Devonian Unit G-10-19981 | Four Star Oil and Gas Company only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – May 2014 |
| Headlee Devonian Unit G-10-19982 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Oct 2019 |
| Headlee Devonian Unit G-10-19983 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – May 2019 |
| Headlee Devonian Unit G-10-19984 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Oct 2019 |
| Headlee Devonian Unit G-10-19985 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Jul 2019 |
| Headlee Devonian Unit G-10-19986 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Aug 2019 |
| Headlee Devonian Unit G-10-19987 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Feb 2019 |
| Headlee Devonian Unit G-10-19960 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Mar 2023 |
| Headlee Devonian Unit G-10-19989 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Mar 2024 |
| Headlee Devonian Unit G-10-19990 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Jan 2024 |
| Headlee Devonian Unit G-10-19991 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Sep 2023 |
| Headlee Devonian Unit G-10-19992 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Dec 2020 |
| Headlee Devonian Unit G-10-19993 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Oct 2023 |
| Headlee Devonian Unit G-10-19994 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Sep 2023 |
| Headlee Devonian Unit G-10-19995 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Dec 2023 |
| Headlee Devonian Unit G-10-19996 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Dec 2023 |
| Headlee Devonian Unit G-10-19997 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Jul 2019 |
| Headlee Devonian Unit G-10-19998 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Jun 2019 |
| Headlee Devonian Unit G-10-19999 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Jun 2019 |
| Headlee Devonian Unit G-10-20000 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – May 2019 |
| Headlee Devonian Unit G-10-20001 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Aug 2019 |
| Headlee Devonian Unit G-10-20002 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Jan 2024 |
| Headlee Devonian Unit G-10-20003 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Feb 2024 |
| Headlee Devonian Unit G-10-20004 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Feb 2024 |
| Headlee Devonian Unit G-10-20005 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Oct 2021 |
| Headlee Devonian Unit G-10-20006 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Apr 2024 |
| Headlee Devonian Unit G-10-19958 | Chevron U. S. A. Inc. only | Headlee (Devonian) | — | 1 | 0 | 0 | Jan 1993 – Oct 2023 |