Abstract:

Basis on the gravel packing sand control theory, the flux distributing into each resistance section was introduced in the paper. The changing of velocity of flow was analyzed，the laminar skin and the turbulent skin in the damage district and the shot hole were derived with the pressure drop when the perforalions were through the contaminated district or not. At the same time, the turbulent skin and the convergence skin for frac-packing were presented. By the contrast between the model of this paper and numerical value, the formulas of this paper were in reason to provide theoretic base for sand control gravel packing.

Key words: gravel-pack, damage district skin, perforating hole skin, convergence skin, turbulent skin