FIELD: well testing. SUBSTANCE: flowmeter has body with inlet and outlet ports. Located in body are impeller, recorder, rod, drum with strip, tube, piston, tube with longitudinal recess and installed coaxially with rod. Rod has union hole on the side of attachment of piston. Installed on free end of rod is recorder for free rotation, contacting the strip and motion over tube longitudinal recess. Tube with longitudinal recess is installed coaxially to rod, spring-loaded relative to impeller and connected with it by means of shaft. Weight, piston with rod and recorder are located for uniform motion along body axis. Strip is made of foil. EFFECT: higher efficiency of testing well with lost circulation. 5 dwg
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