San Angelo Formation

Operator-reported tops from 3,575 wells across 24 counties, median tops running 744–6,400 ft by county.

Top depth: 1,150 ft 4,025 ft

800 wells shown (sampled from 3,575)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Midland	1,235	3,600 ft	3,419–3,836	↓
Mitchell	559	2,375 ft	2,183–2,475	↓
Irion	553	1,365 ft	904–1,979	↓
Howard	332	2,558 ft	2,420–2,638	↓
Tom Green	318	940 ft	714–1,240	↓
Garza	104	2,450 ft	2,269–2,545	↓
Scurry	86	2,550 ft	2,106–2,850	↓
Schleicher	74	989 ft	700–1,601	↓
Andrews	69	5,691 ft	5,533–5,834	↓
Ector	55	5,182 ft	4,980–5,260	↓
Gaines	43	6,400 ft	5,823–6,754	↓
Ward	39	4,632 ft	3,753–4,808	↓
Kent	24	2,199 ft	1,945–2,293	↓
Sterling	17	1,580 ft	1,181–2,900	↓
Winkler	10	4,742 ft	4,498–5,023	↓
Crockett	9	1,278 ft	970–3,240	↓
Coke	9	950 ft	515–1,211	↓
Terry	7	5,726 ft	4,324–5,778	↓
County 433	6	744 ft	496–787	↓
Pecos	6	2,081 ft	447–2,326	↓
Dickens	5	2,208 ft	2,184–2,208	↓
Upton	5	4,690 ft	4,637–4,813	↓
Reagan	5	3,175 ft	3,080–4,611	↓
Hockley	5	5,188 ft	4,433–5,253	↓

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.