DETERMINING SHEAR RATE AND/OR SHEAR STRESS FROM SONAR BASED VELOCITY PROFILES AND DIFFERENTIAL PRESSURE

摘要

The present invention provides a new method and apparatus for receiving signals containing information about a plurality of velocity profiles of a flow in a pipe and about a pressure gradient of the flow over a length of the pipe; and determining information about an injection of a chemical into the flow in the pipe based at least partly on the information contained in the signals.