FOAM CIRCULATION DEVICE Russian patent published in 1994 - IPC

FIELD: foam circulation devices. SUBSTANCE: foam circulation device includes mud pump, foam generator, receiving vessel communicated with cleaning unit and deaerator, and compressor. Successively connected with foam generator are densimeter, pressure pickup, flowmeter and connected with station of foam parameter control. Second densimeter is installed on line of foam output from well and also connected to station of foam parameter control. Foam coming from well enters aerator which is connected to compressor. Foam in aerator is saturated with air from compressor to critical state at which foam disintegrates spontaneously into component phases-foam forming fluid and air. Gas fluid mixture is fed to cleaning unit and then to deaerator. Air is released to atmosphere and fluid is directed for reuse. EFFECT: higher efficiency. 2 cl, 1 dwg