Downhole tool with an ultrasonic probe for measuring fluid flow properties

摘要: A downhole tool for measuring flow properties of a multiphase fluid at location within subterranean borehole includes least one ultrasonic probe with transducer unit having an ultrasound transmission/receiving surface which, in use, interfaces the flow. At surface, transmits acoustic waves into and receives reflections from piezoelectric element produces waves. The focuses transmitted focus volume flow, which contains position maximum intensity that is spaced distance 50 mm or less surface. An electronic controller operates unit, signal processor measures received reflected