Gas Holdup Imaging Identifies Complex Gas-Liquid Flow Regimes and Introduces a New Velocity Measurement in a Long, Cased Hole, Horizontal, Production Well

Gas holdup probes run in a producing horizontal well on the Norwegian continental shelf are used to identify downhole flow regimes and compute the velocity of gas in intermittent flow. The observed flow regimes are compared with the predictions of a number of gas-liquid flow correlations. The theory and quality of velocity correlations are discussed.