FIELDS AND POOLS · UNITED STATES
Duffer fields and pools
A regulator names each reservoir it oversees: a field in Texas, a pool in New Mexico. The name carries the formation, which is how one formation can be followed across a state line.
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Wells completed in the Duffer → · The Duffer formation →
125 ON FILE · PAGE 1 OF 3
| Field or pool | State | Formation | County | Active completions | Operators | Oil, 12 mo | Gas, 12 mo | Lifetime oil | Last reported |
|---|---|---|---|---|---|---|---|---|---|
| Caddo (Duffer) | Texas | Duffer | Stephens | 63 | 3 | 10,896 | 594,940 | 454,994 | Apr 2026 |
| Adams (Duffer, Lower) | Texas | Duffer Lower | Eastland | 11 | 1 | 5,340 | 12,800 | 152,775 | Apr 2026 |
| Pitz (Duffer) | Texas | Duffer | Stephens | 41 | 6 | 4,709 | 262,634 | 105,148 | Apr 2026 |
| Adams (Duffer) | Texas | Duffer | Eastland | 0 | 0 | 3,439 | 1,175 | 158,305 | Apr 2026 |
| Bill Edwards (Duffer) | Texas | Duffer | Eastland | 0 | 0 | 1,580 | 7,108 | 164,239 | Apr 2026 |
| Walker-Davis (Duffer 3990) | Texas | Duffer 3990 | Stephens | 2 | 2 | 1,237 | 119,667 | 33,490 | Apr 2026 |
| Caddo, North (Duffer) | Texas | Duffer | Stephens | 22 | 1 | 1,181 | 131,675 | 86,435 | Apr 2026 |
| Fredda (Duffer Lime) | Texas | Duffer Lime | Callahan | 0 | 0 | 1,110 | 13,205 | 34,524 | Apr 2026 |
| Burkett, SW. (Duffer) | Texas | Duffer | Coleman | 22 | 2 | 1,051 | 3,074 | 52,717 | Apr 2026 |
| Scranton,nw (Duffer) | Texas | Duffer | Callahan | 1 | 1 | 711 | 3,986 | 92,198 | Apr 2026 |
| Snow (Duffer) | Texas | Duffer | Eastland +1 | 0 | 0 | 487 | 9,924 | 7,808 | Apr 2026 |
| Knight (Duffer, Lo. 4050) | Texas | Duffer LO 4050 | Stephens | 3 | 1 | 423 | 35,967 | 51,192 | Apr 2026 |
| C.F.U. (Duffer Lime) | Texas | Duffer Lime | — | 0 | 2 | 398 | 6,609 | 28,879 | Oct 2025 |
| Jett (Duffer) | Texas | Duffer | Brown | 1 | 1 | 305 | 642 | 35,879 | Apr 2026 |
| Doug Cook (Duffer) | Texas | Duffer | Eastland | 2 | 1 | 302 | 1,255 | 111,876 | Apr 2026 |
| Jennie Faye (Duffer) | Texas | Duffer | Callahan | 0 | 0 | 172 | 377 | 5,652 | Apr 2026 |
| Locker (Duffer) | Texas | Duffer | Brown | 3 | 1 | 151 | 5,866 | 20,826 | Apr 2026 |
| E.J.M. (Duffer) | Texas | Duffer | — | 0 | 2 | 95 | 2,125 | 2,703 | Dec 2025 |
| Nicholas (Duffer) | Texas | Duffer | Callahan +1 | 2 | 1 | 85 | 10,137 | 42,817 | Apr 2026 |
| Lake Necessity (Duffer) | Texas | Duffer | Stephens | 1 | 1 | 80 | 3,818 | 7,917 | Apr 2026 |
| Grosvenor, SW (Duffer) | Texas | Duffer | Brown | 4 | 2 | 74 | 46 | 38,369 | Mar 2026 |
| Putnam, West (Duffer) | Texas | Duffer | Callahan | 0 | 0 | 58 | 0 | 27,795 | Jan 2026 |
| Flatwood,e.(duffer) | Texas | Duffer | Eastland | 0 | 0 | 55 | 0 | 883 | Apr 2026 |
| Lake Leon (Duffer) | Texas | Duffer | Eastland | 9 | 5 | 36 | 21,944 | 46,028 | Apr 2026 |
| Breckenridge; SE (Duffer) | Texas | Duffer | Stephens | 1 | 1 | 31 | 13,564 | 2,956 | Apr 2026 |
| C-M (Duffer) | Texas | Duffer | Stephens | 1 | 1 | 25 | 6,086 | 3,028 | Apr 2026 |
| Blind (Duffer) | Texas | Duffer | Eastland +1 | 1 | 1 | 19 | 0 | 878 | Mar 2026 |
| Murdoch (Duffer) | Texas | Duffer | Brown | 0 | 0 | 12 | 17,034 | 20,146 | Apr 2026 |
| Four J (Duffer UP) | Texas | Duffer UP | Stephens | 3 | 2 | 1 | 7,626 | 8,549 | Apr 2026 |
| Ivan (Duffer) | Texas | Duffer | Stephens | 1 | 1 | 0 | 117,445 | 0 | Apr 2026 |
| Lonesome Duffer (Duffer) | Texas | Duffer | Stephens +1 | 17 | 2 | 0 | 101,578 | 23,826 | Apr 2026 |
| Lee Ray (Duffer Lime) | Texas | Duffer Lime | Eastland +1 | 10 | 4 | 0 | 96,129 | 5,294 | Apr 2026 |
| Langford (Duffer) | Texas | Duffer | Stephens | 1 | 1 | 0 | 86,567 | 892 | Apr 2026 |
| Ivan, E. (Duffer) | Texas | Duffer | Stephens | 7 | 1 | 0 | 81,616 | 0 | Apr 2026 |
| Wayland, SE (Duffer Lime) | Texas | Duffer Lime | Stephens | 3 | 3 | 0 | 46,235 | 1,658 | Apr 2026 |
| Walker-Davis (Duffer Lime) | Texas | Duffer Lime | Stephens | 4 | 3 | 0 | 22,901 | 0 | Apr 2026 |
| Richey (Duffer) | Texas | Duffer | Eastland +1 | 4 | 3 | 0 | 20,888 | 504 | Apr 2026 |
| Necessity (Duffer Lime) | Texas | Duffer Lime | Stephens | 3 | 3 | 0 | 12,745 | 0 | Apr 2026 |
| Byrnes (Duffer) | Texas | Duffer | Erath +2 | 1 | 1 | 0 | 11,058 | 387 | Apr 2026 |
| North Ridge (Duffer) | Texas | Duffer | Eastland | 0 | 0 | 0 | 9,421 | 1,557 | Apr 2026 |
| Kokomo Caddo (Duffer) | Texas | Duffer | Eastland | 2 | 1 | 0 | 8,940 | 0 | Mar 2026 |
| Eureka (Duffer) | Texas | Duffer | Stephens | 1 | 1 | 0 | 8,480 | 0 | Apr 2026 |
| Brooke (Duffer) | Texas | Duffer | Stephens | 4 | 2 | 0 | 6,969 | 7,631 | Apr 2026 |
| Kight (Duffer) | Texas | Duffer | Stephens | 2 | 1 | 0 | 6,419 | 0 | Apr 2026 |
| Leonard (Duffer) | Texas | Duffer | Stephens | 2 | 1 | 0 | 5,600 | 0 | Apr 2026 |
| Mission Mtn. (Duffer) | Texas | Duffer | Callahan | 1 | 1 | 0 | 3,999 | 0 | Nov 2025 |
| J. T. Ranch (Duffer) | Texas | Duffer | Eastland +1 | 2 | 1 | 0 | 3,921 | 2,388 | Apr 2026 |
| Delay (Duffer) | Texas | Duffer | Brown | 2 | 2 | 0 | 3,433 | 20,194 | Mar 2026 |
| Deleon, W (Duffer) | Texas | Duffer | Comanche | 1 | 1 | 0 | 3,091 | 0 | Apr 2026 |
| Corbett (Duffer) | Texas | Duffer | Stephens | 1 | 1 | 0 | 2,911 | 0 | Apr 2026 |
OIL IN BBL · GAS IN MCF · TWELVE MONTHS THROUGH THE STATE'S REPORTED-THROUGH MONTH
About this data
Each state regulator'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, documented in the API reference.