Computing main elements of a cyclone-type desender flow part using the local multiphase separation coefficient

Reliability of the submersible units with an electric centrifugal pump is increased by installing a cyclone-type desender at the inlet in the oil producing wells with high content of the mechanical impurities. Desender protects a submersible pump from mechanical impurities by separating and collecting them in a special container. The paper proposes an upgrade technique making it possible to determine the main geometric dimensions of the mechanical impurity separator (desender) parts. It derives formulas to establish speed, flow rate and shut-off pressure that are representing minimum values ??of the flow rate at the outlet from the auger, flow rate and hydraulic losses in the auger. With these formulas, complete separation of the solid particles, their collection and retention in a standard container are achieved for the multiphase mixtures with certain physical and chemical properties.
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