Signal processing in downhole equipment

Details Signal processing in downhole equipment Signal processing in downhole equipment

E - Fixed Constructions

21

B

E21B 43/12 (2006.01) E21B 47/12 (2006.01)

Patent

CA 2677881

A method of transmitting power and/or data between downhole equipment and a surface through a circuit including an alternating current (AC) powered motor and itsassociated power cable for powering the downhole equipmentis disclosed, where the data is transmitted atfrequencies outside the normal operating ranges that are thought acceptable. Associated circuitry and apparatus for performing the method are disclosed.

L'invention concerne un procédé de transmission d'énergie et/ou de données entre un équipement de fond de puits et une surface via un circuit comprenant un moteur à courant alternatif (CA) et un câble mécanisé qui lui est associé pour alimenter les équipements de fond de puits, les données étant transmises à des fréquences en dehors de plages de fonctionnement normales qui sont considérées comme acceptables. L'invention concerne aussi des circuits et appareils associés pour mettre en oeuvre le procédé de l'invention.

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