Brown Dolomite Formation

Operator-reported tops from 9,782 wells across 16 counties, median tops running 1,954–4,556 ft by county.

Top depth: 2,170 ft 4,611 ft

831 wells shown (sampled from 9,782)

Depth by County

County	Wells	Median Top	Typical Range	CSV
Hutchinson	1,604	2,838 ft	2,391–3,030	↓
Moore	1,604	2,775 ft	2,283–3,224	↓
Hemphill	1,137	4,229 ft	3,784–4,530	↓
Gray	862	2,550 ft	2,276–3,054	↓
Roberts	797	3,906 ft	3,306–4,255	↓
Ochiltree	720	3,371 ft	3,219–3,650	↓
Lipscomb	675	3,470 ft	3,327–3,800	↓
Hutchinson	613	2,482 ft	2,239–2,844	↓
Wheeler	432	4,556 ft	1,901–4,858	↓
Potter	406	2,386 ft	2,030–3,782	↓
Sherman	389	2,926 ft	2,650–3,099	↓
Hansford	296	3,030 ft	2,804–3,210	↓
Hartley	110	3,550 ft	2,944–3,899	↓
Oldham	96	4,382 ft	4,007–4,521	↓
Collingsworth	36	1,954 ft	1,813–2,202	↓
Donley	5	2,595 ft	2,476–2,768	↓

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.