Greta Formation

Operator-reported tops from 1,932 wells across 9 counties, median tops running 2,860–5,080 ft by county.

Export All Tops (CSV)
Top depth: 4,150 ft 5,225 ft
229 wells shown (sampled from 1,932)

Depth by County

CountyWellsMedian TopTypical RangeCSV
Refugio8024,375 ft3,734–4,620
Victoria4114,700 ft3,250–5,010
Jackson3755,080 ft3,775–5,312
San Patricio1484,820 ft3,670–5,146
Wharton874,270 ft3,780–5,214
Nueces524,867 ft3,346–6,270
Calhoun394,802 ft4,230–5,704
Goliad113,200 ft2,585–3,984
Bee72,860 ft2,766–3,210

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.

Most Active Operators

T-C OIL COMPANY, LLC 85 wells · 26 recent
HILCORP ENERGY COMPANY 86 wells · 7 recent
QUINTANA PET. CORP. 92 wells · 4 recent
MOBIL PRODUCING TX. & N.M. INC. 78 wells · 3 recent
T-C OIL COMPANY, LLC 242 wells · 2 recent
PHERE OPERATING INC 4 wells · 2 recent
VINTAGE PETROLEUM, INC. 35 wells · 1 recent
KEN PETROLEUM CORPORATION 14 wells · 1 recent
DINERO OIL CORPORATION 10 wells · 1 recent
PENNZOIL PRODUCING CO. 3 wells · 1 recent
GREAT WESTERN DRILLING COMPANY 2 wells · 1 recent
GRETA OPERATING COMPANY LLC 1 wells · 1 recent

Ranked by wells permitted in the last 3 years with this formation on file.