| 901 | MASSEY-STEVENS (SA) A 1H | Denton County, TX | Gas Property | Apr 2025 |
| 902 | MASSEY-YOUNG-STEVENS (SA) 1H | Denton County, TX | Gas Property | Apr 2025 |
| 903 | MASSIE | Clay County, TX | Oil & Gas Property | Nov 2024 |
| 904 | MASSIE | Upton County, TX | Oil & Gas Property | Apr 2025 |
| 905 | MASSIE R. H | Jack County, TX | Oil & Gas Property | Apr 2025 |
| 906 | MASSIE-CHAPMAN | Gray County, TX | Oil & Gas Property | Mar 2025 |
| 907 | MASSINGALE | Harrison County, TX | Oil & Gas Property | Apr 2025 |
| 908 | MAST | Nacogdoches County, TX | Oil & Gas Property | Apr 2025 |
| 909 | MAST | Nacogdoches County, TX | Oil & Gas Property | Apr 2025 |
| 910 | MAST A. T. B | Nacogdoches County, TX | Oil & Gas Property | Mar 2025 |
| 911 | MAST GAS UNIT A | Nacogdoches County, TX | Oil & Gas Property | Feb 2025 |
| 912 | MASTEN | Cochran County, TX | Oil & Gas Property | Apr 2025 |
| 913 | MASTERS | Johnson County, TX | Oil & Gas Property | Apr 2025 |
| 914 | MASTERS | Bexar County, TX | Oil & Gas Property | Apr 2025 |
| 915 | MASTERS UNIT | Howard County, TX | Oil & Gas Property | Apr 2025 |
| 916 | MASTERSON | King County, TX | Oil & Gas Property | Mar 2025 |
| 917 | MASTERSON | Pecos County, TX | Oil & Gas Property | Apr 2025 |
| 918 | MASTERSON | Brazoria County, TX | Oil & Gas Property | Apr 2025 |
| 919 | MASTERSON | Pecos County, TX | Oil & Gas Property | Apr 2025 |
| 920 | MASTERSON | Potter County, TX | Oil & Gas Property | Apr 2025 |
| 921 | MASTERSON | Potter County, TX | Gas Property | Apr 2025 |
| 922 | MASTERSON | Reagan County, TX | Oil & Gas Property | Oct 2023 |
| 923 | MASTERSON | Brazoria County, TX | Oil Property | Apr 2025 |
| 924 | MASTERSON | Potter County, TX | Oil & Gas Property | Apr 2025 |
| 925 | MASTERSON 37 | Sutton County, TX | Oil & Gas Property | Mar 2025 |
| 926 | MASTERSON 87 | Potter County, TX | Oil & Gas Property | Mar 2025 |
| 927 | MASTERSON IRR | Brazoria County, TX | Oil & Gas Property | Sep 2018 |
| 928 | MASTERSON RED CAVE UNIT | Moore County, TX | Oil & Gas Property | Apr 2025 |
| 929 | MASTODON | Tarrant County, TX | Gas Property | Apr 2025 |
| 930 | MATA-THOMAS GU | Webb County, TX | Oil & Gas Property | Apr 2025 |
| 931 | MATADOR | Motley County, TX | Oil & Gas Property | Apr 2025 |
| 932 | MATADOR | Pecos County, TX | Oil & Gas Property | Apr 2025 |
| 933 | MATADOR 6-33 | Reeves County, TX | Oil & Gas Property | Apr 2025 |
| 934 | MATADOR 646 | Yoakum County, TX | Oil & Gas Property | Apr 2025 |
| 935 | MATADOR COWEY ORCA | Dewitt County, TX | Oil & Gas Property | Nov 2024 |
| 936 | MATADOR DANYSH ORCA | Karnes County, TX | Oil & Gas Property | Apr 2025 |
| 937 | MATADOR K. LOVE ORCA | Dewitt County, TX | Oil & Gas Property | Jun 2019 |
| 938 | MATADOR PAWELEK | Karnes County, TX | Oil & Gas Property | Apr 2025 |
| 939 | MATADOR SICKENIUS | Karnes County, TX | Oil & Gas Property | Apr 2025 |
| 940 | MATCEK | Burleson County, TX | Oil & Gas Property | Apr 2025 |
| 941 | MATCEK-ONDRASEK UNIT | Burleson County, TX | Oil & Gas Property | Apr 2025 |
| 942 | MATCHETT | Jones County, TX | Oil & Gas Property | Apr 2025 |
| 943 | MATCHLESS 28 | Martin County, TX | Oil & Gas Property | Apr 2025 |
| 944 | MATECHA MARY | Jones County, TX | Oil & Gas Property | Apr 2025 |
| 945 | MATEJEK 01 | Dewitt County, TX | Oil & Gas Property | Apr 2025 |
| 946 | MATHER RANCH 167 (ALLOCATION) 3H | Hemphill County, TX | Oil & Gas Property | Apr 2025 |
| 947 | MATHERS | Hemphill County, TX | Oil & Gas Property | Apr 2025 |
| 948 | MATHERS | Gray County, TX | Oil & Gas Property | Apr 2025 |
| 949 | MATHERS | Gray County, TX | Oil & Gas Property | Apr 2011 |
| 950 | MATHERS | Lynn County, TX | Oil & Gas Property | Apr 2025 |
| 951 | MATHERS | Gray County, TX | Gas Property | Apr 2025 |
| 952 | MATHERS | Coke County, TX | Oil & Gas Property | Mar 2025 |
| 953 | MATHERS | Hemphill County, TX | Oil & Gas Property | Apr 2025 |
| 954 | MATHERS | Hemphill County, TX | Oil & Gas Property | Apr 2025 |
| 955 | MATHERS-STATE 172-156 CL EX 1H | Hemphill County, TX | Oil & Gas Property | Apr 2025 |
| 956 | MATHEWS | Clay County, TX | Oil & Gas Property | Apr 2025 |
| 957 | MATHEWS | Hansford County, TX | Gas Property | Apr 2025 |
| 958 | MATHEWS | Harris County, TX | Oil & Gas Property | Apr 2025 |
| 959 | MATHEWS | Hansford County, TX | Oil & Gas Property | Apr 2025 |
| 960 | MATHEWS | Foard County, TX | Gas Property | Mar 2025 |
| 961 | MATHEWS | Hutchinson County, TX | Oil & Gas Property | Apr 2025 |
| 962 | MATHEWS | Tom Green County, TX | Oil & Gas Property | Mar 2024 |
| 963 | MATHEWS FANNIE | Andrews County, TX | Oil & Gas Property | Oct 2022 |
| 964 | MATHEWS UNIT | Shelby County, TX | Oil & Gas Property | Apr 2025 |
| 965 | MATHIEWS | Throckmorton County, TX | Oil & Gas Property | Apr 2025 |
| 966 | MATHIS | Haskell County, TX | Oil & Gas Property | Apr 2025 |
| 967 | MATHIS | Dawson County, TX | Oil & Gas Property | Apr 2025 |
| 968 | MATHIS | Madison County, TX | Oil & Gas Property | Apr 2025 |
| 969 | MATHIS | Anderson County, TX | Oil & Gas Property | Jan 2025 |
| 970 | MATHIS | Hockley County, TX | Oil & Gas Property | Mar 2025 |
| 971 | MATHIS | Haskell County, TX | Oil & Gas Property | Feb 2025 |
| 972 | MATHIS 7 | Martin County, TX | Oil & Gas Property | Apr 2025 |
| 973 | MATHIS COAL CAR | Tarrant County, TX | Gas Property | Apr 2025 |
| 974 | MATHIS W. F | Scurry County, TX | Oil & Gas Property | Apr 2025 |
| 975 | MATI RAE SPRABERRY UNIT | Dawson County, TX | Oil & Gas Property | Apr 2025 |
| 976 | MATIAS UNIT | Lavaca County, TX | Oil & Gas Property | Apr 2025 |
| 977 | MATKIN, W.C. ESTATE - WN | Live Oak County, TX | Oil & Gas Property | Jan 2005 |
| 978 | MATL-TRULL -H- SAND UNIT | Matagorda County, TX | Oil & Gas Property | Apr 2025 |
| 979 | MATLAGE THEO | Harris County, TX | Oil & Gas Property | Apr 2025 |
| 980 | MATLOCK | Archer County, TX | Oil & Gas Property | Nov 2017 |
| 981 | MATLOCK | Smith County, TX | Oil & Gas Property | Apr 2025 |
| 982 | MATLOCK | Jack County, TX | Oil & Gas Property | Apr 2025 |
| 983 | MATLOCK | Tarrant County, TX | Gas Property | Apr 2025 |
| 984 | MATLOCK J. W | Johnson County, TX | Oil & Gas Property | Apr 2025 |
| 985 | MATLOR | Moore County, TX | Gas Property | Apr 2025 |
| 986 | MATNEY | Montague County, TX | Oil & Gas Property | Apr 2025 |
| 987 | MATOCHA | McMullen County, TX | Oil & Gas Property | Nov 2023 |
| 988 | MATOCHA | Lavaca County, TX | Oil & Gas Property | Apr 2025 |
| 989 | MATRIX CASPIAN | Webb County, TX | Oil & Gas Property | Apr 2025 |
| 990 | MATRIX CERRITO UNIT | Webb County, TX | Oil & Gas Property | Apr 2025 |
| 991 | MATRIX LAND CO | Webb County, TX | Oil & Gas Property | Apr 2025 |
| 992 | MATSON P.I | Brown County, TX | Oil & Gas Property | Apr 2025 |
| 993 | MATT | Wheeler County, TX | Oil & Gas Property | Apr 2025 |
| 994 | MATTE UNIT A | Karnes County, TX | Oil & Gas Property | Apr 2025 |
| 995 | MATTERHORN | Harrison County, TX | Gas Property | Apr 2025 |
| 996 | MATTERHORN 24 | Howard County, TX | Oil & Gas Property | Apr 2025 |
| 997 | MATTERHORN UNIT | Karnes County, TX | Oil & Gas Property | Apr 2025 |
| 998 | MATTHEW | Dewitt County, TX | Oil & Gas Property | Apr 2025 |
| 999 | MATTHEW | Glasscock County, TX | Oil & Gas Property | Apr 2025 |
| 1000 | MATTHEW | Gray County, TX | Gas Property | Apr 2025 |