Tannehill Formation

Operator-reported tops from 3,743 wells across 24 counties, median tops running 334–4,420 ft by county.

Top depth: 300 ft 3,900 ft

433 wells shown (sampled from 3,743)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Shackelford	894	968 ft	401–1,470	↓
King	456	3,305 ft	2,697–3,825	↓
Stonewall	328	3,090 ft	2,874–3,696	↓
Knox	305	2,074 ft	1,694–2,554	↓
Wichita	288	522 ft	300–811	↓
Dickens	236	4,420 ft	3,978–5,031	↓
Throckmorton	222	696 ft	404–1,054	↓
Callahan	190	830 ft	301–1,545	↓
Jones	186	1,922 ft	1,611–2,431	↓
Baylor	140	1,346 ft	1,162–1,555	↓
Concho	105	1,209 ft	926–1,348	↓
Taylor	92	2,303 ft	1,759–3,031	↓
Nolan	62	3,619 ft	3,270–4,120	↓
Kent	50	4,284 ft	3,907–4,650	↓
Haskell	40	2,387 ft	1,460–2,517	↓
Menard	36	1,088 ft	939–1,344	↓
Foard	29	1,511 ft	1,388–3,142	↓
Coleman	22	1,254 ft	830–1,538	↓
Wilbarger	15	1,274 ft	764–1,650	↓
Eastland	13	358 ft	205–718	↓
Cottle	12	3,005 ft	2,955–3,110	↓
Fisher	10	3,120 ft	2,842–4,393	↓
Clay	7	334 ft	250–373	↓
Young	5	500 ft	488–520	↓

Counties with fewer than 5 wells omitted. Depths are measured depth as filed; typical range is the 10th–90th percentile of reported tops — raw filings contain occasional typo depths, so extremes are not shown.