Miocene fields in Texas
A field is the Railroad Commission's name for a reservoir in one area. Every lease is assigned to one, and production is reported by lease against it.
District
Wells completed in the Miocene → · The Miocene formation →
540 ON FILE · PAGE 1 OF 11
| Field | Formation | County | Leases | Active completions | Operators | Oil, 12 mo | Gas, 12 mo | Lifetime oil | Last reported |
|---|---|---|---|---|---|---|---|---|---|
| Hankamer (Miocene Sand) | Miocene Sand | Liberty | 10 | 61 | 2 | 36,273 | 6,309 | 4.5M | Apr 2026 |
| Manvel, E. (Miocene 3300) | Miocene 3300 | Brazoria | 5 | 2 | 1 | 5,596 | 0 | 212,957 | Apr 2026 |
| Willamar, West (Miocene 5850) | Miocene 5850 | Willacy | 3 | 2 | 1 | 2,952 | 507 | 298,698 | Apr 2026 |
| McFaddin Ranch (Miocene-V-) | Miocene V | Jefferson | 1 | 1 | 1 | 2,906 | 0 | 49,256 | Apr 2026 |
| Sally Withers Lake (Miocene) | Miocene | Jasper | 9 | 5 | 1 | 2,828 | 0 | 91,390 | Apr 2026 |
| Willamar, W.(miocene 6400) | Miocene 6400 | Willacy | 1 | 3 | 1 | 2,768 | 1,451 | 228,505 | Apr 2026 |
| Willamar (Miocene 5400, East) | Miocene 5400 East | Willacy | 3 | 1 | 1 | 2,636 | 5,611 | 865,573 | Apr 2026 |
| Cedar Point (Miocene) | Miocene | Chambers | 8 | 3 | 1 | 2,425 | 4,427 | 359,595 | Nov 2025 |
| McFaddin Ranch (Miocene -M-) | Miocene M | Jefferson | 1 | 0 | 0 | 1,376 | 0 | 56,700 | Apr 2026 |
| Pridham Lake (Miocene 2900) | Miocene 2900 | Victoria | 2 | 1 | 1 | 1,110 | 0 | 8,854 | Nov 2025 |
| McFaddin Ranch (Miocene -Q-) | Miocene Q | Jefferson | 1 | 1 | 1 | 1,107 | 0 | 9,599 | Apr 2026 |
| Willamar, West (Miocene 5300) | Miocene 5300 | Willacy | 3 | 3 | 1 | 1,086 | 1,472 | 475,577 | Apr 2026 |
| McFaddin Ranch (Miocene -S-) | Miocene S | Jefferson | 2 | 1 | 1 | 695 | 0 | 74,469 | Feb 2026 |
| Clinton, NW (Miocene 3850) | Miocene 3850 | Harris | 1 | 0 | 0 | 109 | 0 | 31,164 | Jun 2025 |
| Manvel (Miocene 3300) | Miocene 3300 | Brazoria | 6 | 1 | 1 | 69 | 0 | 233,089 | Apr 2026 |
| Houston, South (Miocene) | Miocene | Harris | 11 | 3 | 1 | 29 | 32 | 271,968 | Mar 2026 |
| Manvel (Miocene) | Miocene | Brazoria | 20 | 2 | 1 | 20 | 183 | 607,343 | Nov 2025 |
| Potrero Farias (Miocene 4720) | Miocene 4720 | Kenedy | 3 | 1 | 1 | 0 | 387,145 | 0 | Mar 2026 |
| Egypt, NW. (Miocene 2760) | Miocene 2760 | Wharton | 4 | 3 | 1 | 0 | 38,706 | 0 | Apr 2026 |
| Magnet Withers (Miocene 4200) | Miocene 4200 | Wharton +1 | 36 | 1 | 1 | 0 | 14,635 | 0 | Apr 2026 |
| Mack Lake (Miocene-Frio) | Miocene Frio | Jasper | 1 | 1 | 1 | 0 | 11,137 | 0 | Apr 2026 |
| Magnet Withers (Miocene 4000) | Miocene 4000 | Wharton | 16 | 2 | 2 | 0 | 10,649 | 0 | Apr 2026 |
| Hope (Miocene 2500) | Miocene 2500 | Lavaca | 9 | 2 | 2 | 0 | 7,848 | 0 | Mar 2026 |
| Hope (Miocene 1250) | Miocene 1250 | Lavaca | 3 | 1 | 1 | 0 | 6,813 | 0 | Mar 2026 |
| Tomball (Miocene 3320) | Miocene 3320 | Harris | 3 | 1 | 1 | 0 | 5,113 | 0 | Apr 2026 |
| Eaton (Miocene 2000 ) | Miocene 2000 | Colorado | 6 | 1 | 1 | 0 | 4,667 | 0 | Apr 2026 |
| Provident City (Miocene) | Miocene | Lavaca | 7 | 1 | 1 | 0 | 1,934 | 0 | Apr 2026 |
| Chesterville, N. (Miocene 2220) | Miocene 2220 | Colorado | 6 | 1 | 1 | 0 | 1,247 | 0 | Mar 2026 |
| Garwood (Miocene 2100) | Miocene 2100 | Colorado | 2 | 1 | 1 | 0 | 1,147 | 0 | Mar 2026 |
| Anahuac (Miocene 13) | Miocene 13 | Chambers | 3 | 0 | 0 | 0 | 1,020 | 0 | Jun 2025 |
| Anahuac (Miocene 15) | Miocene 15 | Chambers | 2 | 1 | 1 | 0 | 381 | 0 | Jul 2025 |
| Tomball (Miocene 1750) | Miocene 1750 | Harris | 2 | 1 | 1 | 0 | 180 | 0 | Apr 2026 |
| Tomball (Miocene 2400) | Miocene 2400 | Harris | 5 | 2 | 2 | 0 | 104 | 0 | Apr 2026 |
| Tomball (Miocene 2700 FB-A) | Miocene 2700 FB A | Harris | 2 | 1 | 1 | 0 | 67 | 0 | Apr 2026 |
| Magnet Withers (Miocene 3900) | Miocene 3900 | Wharton | 7 | 4 | 3 | 0 | 0 | 0 | Nov 2020 |
| Brookshire Dome (Miocene 5-1C) | Miocene 5 1C | Waller | 68 | 2 | 1 | 0 | 0 | 228,026 | — |
| Sweetwater Lake (Miocene D-5) | Miocene D 5 | Galveston | 1 | 2 | 1 | 0 | 0 | 18,866 | — |
| Greens Lake (Miocene 5200) | Miocene 5200 | Galveston | 1 | 1 | 1 | 0 | 0 | 0 | — |
| Magnet Withers (Miocene 2600) | Miocene 2600 | Wharton | 2 | 1 | 1 | 0 | 0 | 0 | — |
| Marshall, S.W. (Miocene 2350) | Miocene 2350 | Goliad | 1 | 1 | 1 | 0 | 0 | 0 | — |
| Matagorda Bay, NE (Miocene 1900) | Miocene 1900 | Matagorda | 2 | 1 | 1 | 0 | 0 | 0 | — |
| McFaddin Ranch (Miocene-K-) | Miocene K | Jefferson | 1 | 1 | 1 | 0 | 0 | 14,222 | Jun 2020 |
| McFaddin Ranch (Miocene -P-West) | Miocene P West | Jefferson | 1 | 1 | 1 | 0 | 0 | 113,586 | — |
| Willamar West (Miocene 4700) | Miocene 4700 | Willacy | 4 | 1 | 1 | 0 | 0 | 104,386 | Jun 2016 |
| Willamar, West (Miocene 5100) | Miocene 5100 | Willacy | 4 | 1 | 1 | 0 | 0 | 46,629 | May 2017 |
| Willamar, West (Miocene 6050,N) | Miocene 6050 N | Willacy | 1 | 1 | 1 | 0 | 0 | 6,249 | — |
| A.B. Allen (Miocene 2100) | Miocene 2100 | Victoria | 1 | 0 | 0 | 0 | 0 | 0 | — |
| A. B. Allen (Miocene 2200) | Miocene 2200 | Victoria | 1 | 0 | 0 | 0 | 0 | 0 | — |
| A-B-R (Miocene 1600) | Miocene 1600 | Goliad | 3 | 0 | 0 | 0 | 0 | 0 | — |
| Alligator Point (Miocene 6150) | Miocene 6150 | Brazoria | 1 | 0 | 0 | 0 | 0 | 0 | May 2018 |
OIL IN BBL · GAS IN MCF · TWELVE MONTHS THROUGH THE STATE'S REPORTED-THROUGH MONTH
About this data
Railroad Commission of Texas's field and pool registry, with the completions and the reported volumes of each. The formation is read from the name the regulator gave it and matched to one registry shared by every state; a name that gives no single formation has none. Nothing is estimated.
Developers: this page as JSON is GET /v1/data/fields?state=tx, documented in the API reference.