Simpson Formation

Operator-reported tops from 687 wells across 26 counties, median tops running 4,904–16,864 ft by county.

Top depth: 5,994 ft 17,700 ft

39 wells shown (sampled from 687)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Crockett	102	8,797 ft	6,412–11,243	↓
Pecos	80	9,256 ft	4,875–19,382	↓
Ector	79	8,550 ft	7,620–12,538	↓
Andrews	74	10,050 ft	8,134–13,640	↓
Winkler	53	9,448 ft	8,184–12,642	↓
Upton	32	11,392 ft	9,476–12,340	↓
Montague	28	6,848 ft	6,504–8,514	↓
Terrell	26	12,515 ft	11,198–13,206	↓
Ward	23	14,548 ft	8,744–17,750	↓
Crane	20	6,024 ft	5,228–9,924	↓
Midland	19	12,726 ft	12,524–13,050	↓
Hutchinson	17	7,901 ft	6,337–9,172	↓
Ochiltree	15	10,836 ft	10,207–11,461	↓
Grayson	13	8,774 ft	8,175–11,465	↓
Wise	12	7,930 ft	7,290–8,019	↓
Matagorda	11	8,980 ft	8,890–9,104	↓
Lavaca	11	14,210 ft	12,371–14,428	↓
Wheeler	10	14,673 ft	11,656–22,820	↓
Gaines	9	13,500 ft	9,370–13,654	↓
Reeves	9	16,864 ft	11,198–18,535	↓
Roberts	9	10,405 ft	10,305–12,285	↓
Clay	9	6,469 ft	6,188–6,936	↓
Wilbarger	8	4,904 ft	4,834–6,218	↓
Val Verde	6	12,819 ft	11,536–13,776	↓
Cooke	6	6,714 ft	5,418–9,546	↓
Lipscomb	6	11,974 ft	11,708–12,940	↓

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.