| 摘要 |
In order to provide enhanced reliability in the measurement of downhole parameters within a borehole, each downhole parameter is sensed by a pair of detectors 131, 132 and a stream of datapoints representative thereof is generated. Each stream of datapoints is analysed by a processing system 135 relative to the expected statistical norms and physical parameters known to be associated with the characteristics of the detectors 131, 132, to determine whether the datapoints are within the acceptable ranges and parameters. A flag is generated for each stream of datapoints found to be outside the ranges and parameters. The flags are recorded by a recorder 137 together with the streams of datapoints found to be within the acceptable ranges and parameters. <IMAGE> |
