Devonian Formation

Operator-reported tops from 5,386 wells across 25 counties, median tops running 3,793–18,676 ft by county.

Top depth: 5,391 ft 12,568 ft

386 wells shown (sampled from 5,386)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Andrews	942	8,870 ft	7,639–11,636	↓
Ector	681	7,964 ft	5,272–8,857	↓
Upton	619	10,850 ft	8,567–11,544	↓
Midland	456	11,620 ft	11,243–11,936	↓
Crockett	397	8,520 ft	5,066–9,700	↓
Ector	369	8,120 ft	7,573–11,700	↓
Pecos	301	8,666 ft	5,428–18,163	↓
Winkler	274	8,412 ft	7,764–9,889	↓
Glasscock	269	10,452 ft	9,695–10,834	↓
Gaines	212	11,100 ft	10,677–12,636	↓
Ward	167	11,477 ft	6,388–16,656	↓
Martin	144	11,751 ft	10,708–12,272	↓
Yoakum	113	11,854 ft	11,174–12,415	↓
Reeves	107	13,269 ft	10,641–17,100	↓
Terrell	104	11,630 ft	8,620–12,705	↓
Reagan	97	9,760 ft	8,870–10,749	↓
Howard	32	10,228 ft	9,727–10,421	↓
Dawson	21	12,007 ft	11,590–12,204	↓
Cochran	17	11,369 ft	10,559–11,895	↓
Val Verde	17	12,250 ft	11,428–13,278	↓
Culberson	15	11,539 ft	6,087–14,196	↓
Loving	13	18,676 ft	18,363–19,140	↓
Irion	7	9,123 ft	8,808–9,330	↓
Terry	6	12,772 ft	12,576–12,896	↓
Hudspeth	6	3,793 ft	2,546–7,035	↓

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.