Well fluid production profiling using an oxygen activation flow meter
 Measurement of undesired water cut volume flow rate in a producing well is provided. A well tool having a 14 MEV neutron source and dual spaced gamma ray detectors is used to activate elemental oxygen comprising the molecular structure of the undesired water cut. The tool is moved through the perforated zone with detectors located first above and then below the neutron source. The linear flow rate of water from casing perforations in an upward or downward direction in the casing is detected and by combining this with a prior knowledge of the casing cross sectional area, a volume flow profile of production of water flow from each set of casing perforations is constructed. 
Texaco Inc.
G
G01V
inventional
Dan M.
Arnold