Patent ID: 9394899
Filing Date: 2016-07-19
CPC Classification: E21B,F04B

Claim Text:
1. A method comprising: selecting a measured parameter from a sensor coupled to a subsurface electrical device; obtaining a plurality of samples for the measured parameter; removing at least one invalid sample from the plurality of samples of the measured parameter to generate a remaining number of samples, wherein the at least one invalid sample is based on a predefined sample criteria; computing a diagnostic parameter based on the remaining number of samples from the plurality of samples, if the remaining number of samples is greater than a predefined threshold number, otherwise terminating the method; obtaining a rule from a plurality of rules stored in a database, based on the diagnostic parameter, wherein the rule is indicative of a standard operating condition of the subsurface electrical device; evaluating whether the computed diagnostic parameter satisfies the obtained rule, to generate an output; and determining a measured operating condition of the subsurface electrical device based on the output.