| 301 | HIGHLAND | Tarrant County, TX | Gas Property | May 2021 |
| 302 | HIGHTOWER | Tarrant County, TX | Gas Property | Mar 2026 |
| 303 | HITSON | Tarrant County, TX | Gas Property | Mar 2026 |
| 304 | HLC MIPA 3H | Tarrant County, TX | Gas Property | Mar 2026 |
| 305 | HOME RUN | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 306 | HOPKINS UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 307 | HORNED FROG | Tarrant County, TX | Gas Property | Mar 2026 |
| 308 | HORSE CREEK | Tarrant County, TX | Gas Property | Mar 2026 |
| 309 | HORTON TREE UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 310 | HOSLER UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 311 | HOSLER-SFW-WALLS COLEMAN SA 1H | Tarrant County, TX | Gas Property | Mar 2026 |
| 312 | HOWELL | Tarrant County, TX | Gas Property | Mar 2026 |
| 313 | HOWETH UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 314 | HOWLING HOUND COA | Tarrant County, TX | Gas Property | Mar 2026 |
| 315 | HUDSON | Tarrant County, TX | Gas Property | May 2025 |
| 316 | HUFFMAN UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 317 | HUGH WHITE | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 318 | HULLABALOO | Tarrant County, TX | Gas Property | Mar 2026 |
| 319 | HUNTERS RIDGE UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 320 | HYDE-HICKMAN | Tarrant County, TX | Gas Property | Mar 2026 |
| 321 | I-20 JV | Tarrant County, TX | Gas Property | Mar 2026 |
| 322 | ICI-LEJ UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 323 | INDIAN CREEK | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 324 | INDIAN HILLS UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 325 | INDUS NORTH | Tarrant County, TX | Gas Property | Mar 2026 |
| 326 | INDUS STATE | Tarrant County, TX | Gas Property | Mar 2026 |
| 327 | INDUS-CAMPUS DRIVE | Tarrant County, TX | Gas Property | Mar 2026 |
| 328 | JACK UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 329 | JACKSBORO | Tarrant County, TX | Gas Property | Mar 2026 |
| 330 | JARVIS | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 331 | JARVIS FOSSIL CREEK | Tarrant County, TX | Gas Property | Mar 2026 |
| 332 | JARVIS-NORTH RIDGE | Tarrant County, TX | Gas Property | Mar 2026 |
| 333 | JET GUNS UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 334 | JEWEL | Tarrant County, TX | Gas Property | Mar 2026 |
| 335 | JOE POOL GEE UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 336 | JOHNSON COOK | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 337 | JOHNSON LOTTIE BARTON | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 338 | JOHNSON RANCH | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 339 | JOHNSON T | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 340 | JOHNSON-HUBB | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 341 | JOHNSON-NEELEY | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 342 | JORDAN UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 343 | JOVI | Tarrant County, TX | Gas Property | Jun 2019 |
| 344 | JUNKYARD | Tarrant County, TX | Gas Property | Mar 2026 |
| 345 | JW ARLINGTON | Tarrant County, TX | Gas Property | Mar 2026 |
| 346 | KARMALI | Tarrant County, TX | Gas Property | Jul 2023 |
| 347 | KEEP A STEPPIN | Tarrant County, TX | Gas Property | Mar 2026 |
| 348 | KENNEDY UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 349 | KIMBALL HILL | Tarrant County, TX | Gas Property | Mar 2026 |
| 350 | KISD | Tarrant County, TX | Gas Property | Mar 2026 |
| 351 | KLUGE UNIT | Tarrant County, TX | Gas Property | Aug 2020 |
| 352 | KNAPP B UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 353 | KNAPP C UNIT | Tarrant County, TX | Oil & Gas Property | Feb 2018 |
| 354 | KNAPP D UNIT | Tarrant County, TX | Gas Property | Feb 2016 |
| 355 | KNAPP E UNIT | Tarrant County, TX | Gas Property | Aug 2023 |
| 356 | KNAPP SISTERS | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 357 | KYLE | Tarrant County, TX | Gas Property | Mar 2026 |
| 358 | L&S LAND | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 359 | L.B.J.-BLAKLEY | Tarrant County, TX | Gas Property | Mar 2026 |
| 360 | LABC NORTH | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 361 | LABC SOUTH | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 362 | LAGUNA POINT | Tarrant County, TX | Gas Property | Mar 2026 |
| 363 | LAIDLAW | Tarrant County, TX | Gas Property | Mar 2026 |
| 364 | LAKE PLACE | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 365 | LAKE WORTH A TRT | Tarrant County, TX | Gas Property | Mar 2026 |
| 366 | LAKESIDE | Tarrant County, TX | Gas Property | Mar 2026 |
| 367 | LANCASTER | Tarrant County, TX | Gas Property | Mar 2026 |
| 368 | LANCASTER-CANUCKS MIPA 5H | Tarrant County, TX | Gas Property | Mar 2026 |
| 369 | LANDING | Tarrant County, TX | Gas Property | Mar 2026 |
| 370 | LANGLEY | Tarrant County, TX | Gas Property | Jan 2004 |
| 371 | LAPRELL | Tarrant County, TX | Gas Property | Mar 2026 |
| 372 | LAPRELLE | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 373 | LARGENT | Tarrant County, TX | Gas Property | Jul 2022 |
| 374 | LARRY LEGEND UNIT 2H | Tarrant County, TX | Gas Property | Mar 2026 |
| 375 | LASATER J. W. GAS UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 376 | LATHAM TRWD | Tarrant County, TX | Gas Property | Apr 2018 |
| 377 | LAWHON SOUTH UNIT | Tarrant County, TX | Gas Property | Jun 2025 |
| 378 | LAXSON | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 379 | LEAF | Tarrant County, TX | Gas Property | Mar 2026 |
| 380 | LEDBETTER UNIT | Tarrant County, TX | Gas Property | Mar 2023 |
| 381 | LEGGETT & PLATT | Tarrant County, TX | Gas Property | Mar 2026 |
| 382 | LENA | Tarrant County, TX | Gas Property | Mar 2026 |
| 383 | LENA-ELLA 2H | Tarrant County, TX | Gas Property | Mar 2026 |
| 384 | LENOX | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 385 | LESTER LEVY UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 386 | LEVY ACRES UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 387 | LEVY LESTER UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 388 | LEWIS | Tarrant County, TX | Gas Property | Mar 2026 |
| 389 | LIBERTY SCHOOL UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 390 | LILLY | Tarrant County, TX | Gas Property | Jan 2025 |
| 391 | LINKS | Tarrant County, TX | Gas Property | Mar 2026 |
| 392 | LITOGRAFIA | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 393 | LITTLE | Tarrant County, TX | Gas Property | Mar 2026 |
| 394 | LITTLE BEAR | Tarrant County, TX | Gas Property | Mar 2026 |
| 395 | LITTLE-PVI MIPA 5H | Tarrant County, TX | Gas Property | Mar 2026 |
| 396 | LMRA MONT DEL B UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 397 | LMRA WEST UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 398 | LONESTAR UNIT | Tarrant County, TX | Gas Property | Feb 2026 |
| 399 | LOOP | Tarrant County, TX | Oil & Gas Property | Jun 2025 |
| 400 | LORIKEET TRT | Tarrant County, TX | Gas Property | Mar 2026 |