Spraberry Formation

Operator-reported tops from 56,907 wells across 24 counties, median tops running 3,729–8,450 ft by county.

Depth by County

County	Wells	Median Top	Typical Range	CSV
Midland	12,819	7,799 ft	7,155–8,775	↓
Midland	11,105	7,680 ft	6,850–8,333	↓
Upton	7,951	7,431 ft	6,787–7,996	↓
Reagan	7,059	6,269 ft	5,412–7,072	↓
Howard	5,255	6,316 ft	5,141–6,887	↓
Glasscock	4,491	6,702 ft	5,765–7,414	↓
Irion	1,956	4,826 ft	4,020–5,452	↓
Andrews	1,274	8,450 ft	8,185–8,960	↓
Dawson	1,193	7,386 ft	6,630–8,230	↓
Borden	1,138	6,208 ft	4,786–7,230	↓
Ector	1,041	7,934 ft	6,585–8,409	↓
Crockett	598	4,146 ft	3,200–5,570	↓
Garza	262	5,150 ft	4,840–5,897	↓
Sterling	183	4,774 ft	4,500–5,324	↓
Gaines	155	8,404 ft	7,617–9,022	↓
Terry	118	7,500 ft	6,800–8,364	↓
Tom Green	76	4,720 ft	4,183–4,997	↓
Scurry	63	4,800 ft	3,877–5,500	↓
Lynn	45	6,540 ft	5,877–7,099	↓
Schleicher	44	3,729 ft	2,951–4,543	↓
Crane	43	7,202 ft	6,417–8,193	↓
Mitchell	21	4,187 ft	3,902–4,498	↓
Yoakum	11	7,818 ft	7,392–8,979	↓
Hockley	6	7,340 ft	6,877–7,783	↓

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.