Abstract
A mathematical model is developed for the separate-alternate operation of two layers by a screw pumping unit equipped with an electrovalve for switching between development objects. The model is based on the equation for the balance of fluid volumes flowing from the formation into the well, pumped out by the pump and accumulating in the well. Changes in bottomhole pressure, fluid inflow from reservoirs, pump feed in pumping and accumulation modes for the upper and lower reservoirs are analyzed at different rotational speeds of a screw rod pump. The model can be used to estimate the duration of the cycles of the upper and lower layers in the design of separate-alternate modes of screw rod installations. Keywords: simultaneous-separate mode, separate-alternate mode, screw pump, bottomhole pressure, inflow from the reservoir, feed. dpepelyaev@tehproekt.perm.ru, karbon@tatais.ru, urazakk@mail.ru
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