FOAM GENERATOR Russian patent published in 2004 - IPC

FIELD: control of a bottom-hole stratum pressure in oil-producing industry. SUBSTANCE: the invention presents a foam generator and falls into technologies of production of the stable foam intended to control a bottom-hole stratum pressure in the hostile wellbore environment conditions - low stratum pressures. The foam generator contains a housing, in which the foaming element is located; a branch-pipes of input of mediums, one of which is placed on an axis of the housing and another one - on its lateral surface; a branch-pipe of the foam withdrawal. The foaming element is made in the form of a perforated diaphragm and vanes mounted on a power shaft with a capacity of a slip on a surface of the diaphragm. The technical result: an advantage to produce a monodispersed foam with a calculated size of bubbles at the given multiplicity of foam. EFFECT: the invention allows to produce a monodispersed foam with a calculated size of bubbles and the given multiplicity of foam. 2 dwg