FIELD: mining.
SUBSTANCE: group of inventions relates to mining and can be used for well selection of fluid. System comprises a fluid discriminator which selects through which of multiple outlet flow paths a fluid composition flows, selection being based on a direction of flow of the fluid composition through discriminator, and direction being dependent on a fluid type in fluid composition. Another fluid discriminator can include a structure which displaces in response to a fluid composition flow, whereby an outlet flow path of fluid composition changes in response to a change in a ratio of fluids in fluid composition. Method of discriminating between fluids can include providing a fluid discriminator which selects through which of multiple outlet flow paths a fluid composition flows in well, selection being based on a direction of flow of fluid composition through discriminator, and direction being dependent on a ratio of fluids in fluid composition.
EFFECT: technical result consists in improvement of efficiency of selecting fluid in subterranean well.
23 cl, 16 dwg
