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Production logging low flow rate wells is difficult because<br>mechanical spinners have a small dynamic range in slow<br>moving fluids. Low flow rates in horizontal wells means the<br>fluid holdups in the stratified flow are very sensitive to the<br>wellbore inclination, and the high water cut means a small<br>proportion of the flowing liquid will be oil. At what point do<br>these compounding affects limit the ability of current<br>technology to measure low oil flows?