Production logging tool behavior in two-phase inclined flow

Production logging tools obtained from three service companies were tested in one-, two-, and three-phase flow in an inclinable flow test facility. These tests were inspired by the often confusing production logs obtained in deviated wells. The experiments have shown that twophase flow regimes in inclined pipes differ markedly from those in vertical flow at similar flow rates and that these flow regimes adversely affect production logging tool responses. The experiments performed, the behavior of the production logging tools, and a statistical analysis of the data are discussed.