The problem
Sand ingress was reducing pump life across the field. The original packs had been specified from a catalogue rather than sized against the formation, so the pack was too coarse for the finer strata.
Jordan · 2023
Wellfield gravel pack supply
Graded gravel packs sized from formation sieve analyses across a multi-well groundwater abstraction scheme.
- Wells
- 11
- Gravel supplied
- 240 t
- Gradations
- 3
- Fines content
- ≤ 1%
What we supplied
Pack gradation calculated per well from the formation sieve analysis at four to six times the formation D₅₀, producing three distinct gradations across the field rather than one.
Result
Sand ingress reduced to within acceptable limits across the field, with pump maintenance intervals extended accordingly.
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