Abstract: The independent component analysis (ICA) is applied to study the two-phase flow identification. According to the improved J-H algorithm of ICA which based on higher order statistics, the reliability of the method was conformed using given modulate signals and different fluid flow of monophase of oil, gas and water response signals to emulate tow-phase and three-phase mixed up signal sources. The field productive well logging gas and liquid two-phase signals which responded by muli-channel sensors were separated, compare and analysis indicate that signals which characterize the gas and liquid information respectively are successfully separated from mixed signals of well logging.

Key words: ICA, higher order statistics, improved J-H algorithm, two-phase flow, kurtosis