Gravel Pack Calculator

Calculate gravel volume, screen sizing, and sand control parameters

Gravel Pack Parameters

Enter wellbore geometry and sand properties

Median grain size from sieve analysis

Typical 25-100%

Gravel Sizing Rule

  • D50 gravel = 5-6 x D50 formation sand
  • Screen slot = D10 gravel / 2
  • Prevents sand production and fines invasion

Gravel Pack Results

Enter parameters and click Calculate

Common Gravel Sizes

Mesh Size Grain Size (microns) Formation D50
20/40400-85070-140
30/50300-60050-100
40/60250-40040-70
50/70210-30035-50

Formula Reference

Annular Volume

V_ann = (Hole_ID^2 - Screen_OD^2) / 1029.4 x Length (bbl) V_screen = (Screen_OD^2 - Washpipe_OD^2) / 1029.4 x Length (bbl)

Gravel Weight

Weight (lbm) = V_pack (gal) x Concentration (lbm/gal) x Excess 1 bbl = 42 gal Gravel bulk density ~ 100 lbm/ft3