Estimated Value by Well
The wells driving the estimated value of Martha S. Mahaffey's mineral portfolio.
Estimated values combine recorded decimal interests with recent well production.
Get a firm cash offer for these mineral and royalty interests. We review your production history and respond within two business days.
Production History & Forecast
Combined monthly oil and gas production from the most active wells associated with Martha S. Mahaffey, with a 36-month decline-curve forecast.
Source: Railroad Commission of Texas lease production filings. Condensate volumes are reported with gas. The dashed forecast is a decline curve fitted to the production history — an estimate, not a guarantee of future production.
Interests Held By Martha S. Mahaffey
Royalty and mineral interests from the 2025 county tax roll, matched to producing oil and gas wells. Sorted by estimated value.
| # | Property | County | Operator | Interest | Type | Est. Value |
|---|---|---|---|---|---|---|
| 1 | MAHAFFEY SUE 2 API 25131049 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $10,038.83 |
| 2 | MAHAFFEY SUE 3 API 25131048 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $9,985.04 |
| 3 | MAHAFFEY SUE 15 API 25132682 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $8,024.95 |
| 4 | MAHAFFEY SUE 7 H API 25131620 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $7,049.16 |
| 5 | MAHAFFEY SUE 1 API 25130450 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $5,598.96 |
| 6 | MAHAFFEY SUE 8 API 25131619 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $5,044.21 |
| 7 | MAHAFFEY SUE 5 API 25131050 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $4,860.81 |
| 8 | MAHAFFEY SUE 9 API 25131618 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $4,845.73 |
| 9 | MAHAFFEY SUE 4 API 25131026 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $4,699.45 |
| 10 | MAHAFFEY SUE 6 API 25131621 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $4,340.98 |
| 11 | FINIS SHIPMAN 1 API 25130729 | Johnson County, TX | FDL OPERATING LLC | 0.013279 | R | $2,730.71 |
| 12 | EZELL UNIT 2H API 25131506 | Johnson County, TX | UPP OPERATING LLC | 0.013665 | R | $2,065.61 |
| 13 | EZELL 3 H API 25131505 | Johnson County, TX | UPP OPERATING LLC | 0.013665 | R | $1,574.04 |
| 14 | EZELL 4H API 25131644 | Johnson County, TX | UPP OPERATING LLC | 0.013665 | R | $1,383.18 |
| 15 | MANNINGS 4M FARM 3H API 25133961 | Johnson County, TX | FDL OPERATING LLC | 0.004249 | R | $1,180.68 |
| 16 | EZELL 1H API 25130982 | Johnson County, TX | UPP OPERATING LLC | 0.013665 | R | $1,146.79 |
| 17 | MAHAFFEY SUE 13 API 25132680 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $1,019.94 |
| 18 | MANNINGS 4M FARM 4H API 25133963 | Johnson County, TX | FDL OPERATING LLC | 0.004249 | R | $960.05 |
| 19 | MANNINGS 4M FARM 5H API 25133964 | Johnson County, TX | FDL OPERATING LLC | 0.004249 | R | $955.57 |
| 20 | MAHAFFEY SUE 11 API 25132483 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $912.92 |
| 21 | MAHAFFEY SUE 10 API 25132500 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $831.81 |
| 22 | MAHAFFEY SUE 14 API 25132681 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $814.90 |
| 23 | MAHAFFEY SUE 12 API 25132501 | Johnson County, TX | FDL OPERATING LLC | 0.054755 | R | $781.47 |
| 24 | MANNINGS 4M FARM 7H API 25133966 | Johnson County, TX | FDL OPERATING LLC | 0.004249 | R | $752.51 |
| 25 | SHIPMAN FINIS 2 API 25131331 | Johnson County, TX | FDL OPERATING LLC | 0.013279 | R | $652.87 |
| 26 | SLEDGE SISTERS 3 H API 25131480 | Johnson County, TX | UPP OPERATING LLC | 0.020021 | R | $599.67 |
| 27 | SLEDGE SISTERS 1H API 25131475 | Johnson County, TX | UPP OPERATING LLC | 0.020021 | R | $598.99 |
| 28 | MANNINGS 4M FARM 6H API 25133965 | Johnson County, TX | FDL OPERATING LLC | 0.004249 | R | $572.71 |
| 29 | MANNING 4M FARMS 1 API 25131590 | Johnson County, TX | FDL OPERATING LLC | 0.004249 | R | $561.41 |
| 30 | MANNINGS 4M FARMS 2 API 25131839 | Johnson County, TX | FDL OPERATING LLC | 0.004249 | R | $531.68 |
| 31 | MANNINGS 4M FARM 8H API 25133972 | Johnson County, TX | FDL OPERATING LLC | 0.004249 | R | $467.61 |
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