Estimated Value by Well
The wells driving the estimated value of John T. McMahan'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 John T. McMahan, 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 John T. McMahan
Royalty and mineral interests from the 2021 county tax roll, matched to producing oil and gas wells. Sorted by estimated value.
| # | Property | County | Operator | Interest | Type | Est. Value |
|---|---|---|---|---|---|---|
| 1 | IVY ATHEL G/U (8) 8 API 16134682 | Freestone County, TX | XTO ENERGY INC. | 0.000897 | 1 | $185.23 |
| 2 | DUNLAP G/U 1 (08) 8 API 16133313 | Freestone County, TX | XTO ENERGY INC. | 0.000910 | 1 | $160.40 |
| 3 | IVY ATHEL G/U (01)&(02) 1 API 16130386 | Freestone County, TX | XTO ENERGY INC. | 0.000897 | 1 | $131.79 |
| 4 | DUNLAP G/U 1 (06) 6 API 16133321 | Freestone County, TX | XTO ENERGY INC. | 0.000910 | 1 | $121.95 |
| 5 | IVY ATHEL G/U (03) 3 API 16132016 | Freestone County, TX | XTO ENERGY INC. | 0.000897 | 1 | $84.62 |
| 6 | DUNLAP G/U 1 (07) 7 API 16133314 | Freestone County, TX | XTO ENERGY INC. | 0.000910 | 1 | $69.84 |
| 7 | IVY ATHEL G/U (04) 4 API 16133320 | Freestone County, TX | XTO ENERGY INC. | 0.000897 | 1 | $68.61 |
| 8 | REED G/U 4 (07) 7 API 16133309 | Freestone County, TX | XTO ENERGY INC. | 0.000402 | 1 | $54.77 |
| 9 | DUNLAP G/U 1 (05) 5 API 16133315 | Freestone County, TX | XTO ENERGY INC. | 0.000910 | 1 | $47.89 |
| 10 | DUNLAP G/U 1 (04) 4 API 16133140 | Freestone County, TX | XTO ENERGY INC. | 0.000910 | 1 | $47.71 |
| 11 | REED G/U 4 (01/02/03/04) 1 API 16130166 | Freestone County, TX | XTO ENERGY INC. | 0.000402 | 1 | $38.83 |
| 12 | WETTERMARK G/U (05) 5 API 16134580 | Freestone County, TX | XTO ENERGY INC. | 0.000090 | 1 | $18.19 |
| 13 | REED G/U 4 (5H) 5H API 16134445 | Freestone County, TX | XTO ENERGY INC. | 0.000402 | 1 | $13.71 |
| 14 | WETTERMARK G/U (06) 6 API 16134591 | Freestone County, TX | XTO ENERGY INC. | 0.000090 | 1 | $12.27 |
| 15 | WETTERMARK G/U (03) 3 API 16132024 | Freestone County, TX | XTO ENERGY INC. | 0.000090 | 1 | $10.49 |
| 16 | WETTERMARK G/U (02) 2 API 16130609 | Freestone County, TX | XTO ENERGY INC. | 0.000090 | 1 | $8.09 |
| 17 | WETTERMARK G/U (05) 5 API 16134580 | Freestone County, TX | XTO ENERGY INC. | 0.000037 | 2 | $7.38 |
| 18 | WETTERMARK G/U (04) 4 API 16134416 | Freestone County, TX | XTO ENERGY INC. | 0.000090 | 1 | $6.93 |
| 19 | WETTERMARK G/U (06) 6 API 16134591 | Freestone County, TX | XTO ENERGY INC. | 0.000037 | 2 | $4.98 |
| 20 | WETTERMARK G/U (01) 1 API 16130415 | Freestone County, TX | XTO ENERGY INC. | 0.000090 | 1 | $4.97 |
| 21 | WETTERMARK G/U (03) 3 API 16132024 | Freestone County, TX | XTO ENERGY INC. | 0.000037 | 2 | $4.26 |
| 22 | WETTERMARK G/U (02) 2 API 16130609 | Freestone County, TX | XTO ENERGY INC. | 0.000037 | 2 | $3.28 |
| 23 | WETTERMARK G/U (04) 4 API 16134416 | Freestone County, TX | XTO ENERGY INC. | 0.000037 | 2 | $2.81 |
| 24 | WETTERMARK G/U (01) 1 API 16130415 | Freestone County, TX | XTO ENERGY INC. | 0.000037 | 2 | $2.02 |
| 25 | IVY ATHEL G/U (07H) 7H API 16133857 | Freestone County, TX | XTO ENERGY INC. | 0.000897 | 1 | $1.30 |
| 26 | DUNLAP G/U 1 (09) 9 API 16133881 | Freestone County, TX | XTO ENERGY INC. | 0.000910 | 1 | — |
| 27 | IVY ATHEL G/U (5R) 5R API 16134784 | Freestone County, TX | XTO ENERGY INC. | 0.000897 | 1 | — |
| 28 | WETTERMARK G/U (08) 8 API 16134503 | Freestone County, TX | XTO ENERGY INC. | 0.000037 | 2 | — |
| 29 | WETTERMARK G/U (08) 8 API 16134503 | Freestone County, TX | XTO ENERGY INC. | 0.000090 | 1 | — |
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