| Rank | County | Production Period | Oil Production |
|---|---|---|---|
| #1 | Midland County, TX | May 2019 | 13.1M BBLs |
| #2 | Karnes County, TX | May 2019 | 7.9M BBLs |
| #3 | Loving County, TX | May 2019 | 5.8M BBLs |
| #4 | Martin County, TX | May 2019 | 7.2M BBLs |
| #5 | Howard County, TX | May 2019 | 4.6M BBLs |
| #6 | Upton County, TX | May 2019 | 5.5M BBLs |
| #7 | Glasscock County, TX | May 2019 | 3.1M BBLs |
| #8 | Reagan County, TX | May 2019 | 4.0M BBLs |
| #9 | DeWitt County, TX | May 2019 | 3.1M BBLs |
| #10 | Gonzales County, TX | May 2019 | 3.5M BBLs |
| #11 | Ward County, TX | May 2019 | 2.7M BBLs |
| #12 | La Salle County, TX | May 2019 | 4.7M BBLs |
| Rank | County | Production Period | Gas Production |
|---|---|---|---|
| #9 | Johnson County, TX | May 2019 | 14.2M MCF |
| #10 | Reagan County, TX | May 2019 | 21.4M MCF |
| #11 | Webb County, TX | May 2019 | 60.9M MCF |
| #12 | Dimmit County, TX | May 2019 | 22.5M MCF |
| #13 | Upton County, TX | May 2019 | 19.7M MCF |
| #14 | Wise County, TX | May 2019 | 14.4M MCF |
| #15 | Martin County, TX | May 2019 | 14.1M MCF |
| #16 | Denton County, TX | May 2019 | 13.5M MCF |
| #17 | Glasscock County, TX | May 2019 | 12.4M MCF |
| #18 | La Salle County, TX | May 2019 | 18.8M MCF |
| #19 | Harrison County, TX | May 2019 | 10.4M MCF |
| #20 | Irion County, TX | May 2019 | 10.5M MCF |