Jerry Allen Davidson

US Patent:

55311121, Jul 2, 1996

Filed:

May 20, 1994

Appl. No.:

8/246842

Inventors:

Allen R. Young - Arlington TX
Jerry L. Davidson - Burleson TX
Edward Baltazar - Keene TX

Assignee:

Computalog U.S.A., Inc. - Fort Worth TX

International Classification:

F21B 4700
G01R 2722
G01N 1100
G01V 140

US Classification:

73152

Abstract:

A production logging tool is provided for use within a well to determine fluid holdup of a multiphase fluid flow within the well. The production logging tool includes a plurality of sensors secured within a plurality of arms which radially extend from a tool housing to points distal from the tool housing. A plurality of sensors are included within the plurality of arms for detecting variations in fluid properties attributable to different flow constituents of the multiphase fluid flow along a path which circumscribes an exterior of the tool housing. The plurality of arms are rotated about the tool housing for moving these sensors through the path in order to ensure that the volumetric proportions of the different flow constituents of the multiphase fluid flow are accurately detected in highly deviated and in horizontal wells.