Fluid entrainment pump including a conic mixer

摘要

The invention relates to a fluid entrainment pump for a fluid including at least one phase, the pump including a nozzle 10 having a mouth diameter D2 and powered by a driving fluid producing a jet entraining a fluid to be pumped and directed towards a throat 12 having a diameter D3, the pump further including a mixer 13 placed downstream of the throat 12 and a diffuser 14a, 14b placed downstream of the mixer. The device is characterised in that the said mixer 13 has substantially the form of a cone whose opening is directed away from the float 12. The invention is particularly applicable to the production of underground risings including at least one fluid, such as oil risings. <IMAGE>