Patent ID: 9051814
Filing Date: 2015-06-09
Classification: E21B,G01M,G01R

Abstract:
1. A method of estimating a time to failure of an electronic component used in a downhole environment, comprising: applying a stress to cause failure of a plurality of prognostic sensors associated with the electronic component, wherein a stress level at which a prognostic sensor fails is related to a stress level at which the electronic component fails by an acceleration factor of the prognostic sensor, wherein an acceleration factor of at least one prognostic sensor is different than an acceleration factor of another of the plurality of prognostic sensors; obtaining failure times of the plurality of prognostic sensors; determining a plurality of failure points from the time of failure of the sensors and the acceleration factors of the sensors; determining a trend from the plurality of failure points; and estimating the time of failure of the electronic component from the determined trend.