Shielded pads for detecting subsurface radiation phenomena

Details Shielded pads for detecting subsurface radiation phenomena Shielded pads for detecting subsurface radiation phenomena

G - Physics

01

V

G01V 5/08 (2006.01) G01V 5/10 (2006.01) G01V 5/12 (2006.01)

Patent

CA 2536863

Apparatus and method for detecting subsurface radiation phenomena. An elongated support member, adapted for disposal within a wellbore traversing a subsurface formation, includes a recess along its longitudinal axis. A pad is linked to the support member. The pad is configured with a surface correspondingly shaped to fit in juxtaposition with the support member recess. The pad is adapted for movement into and out of the recess such that an exposed surface of the pad can extend away from the support member. The pad also includes one or more radiation detectors and is adapted with shielding material on its sides near the exposed surface to prevent radiation reflected from the recess from reaching the detector(s) from the area near the exposed surface.

Ce document décrit un dispositif et une méthode pour détecter des phénomènes souterrains liés aux radiations. Un membre de support allongé, adapté pour être inséré dans un puits traversant une formation souterraine, comporte un logement sur son axe longitudinal. Un coussinet est fixé au membre de support. La forme de ce coussinet épouse celle du logement pratiqué sur le membre de support. Le coussinet peut se déplacer dans le logement et hors de celui-ci afin qu'une des surfaces exposées du coussinet soit orientée vers la paroi du puits. Le coussinet est muni d'un ou plusieurs détecteurs de radiation. Les parois du coussinet adjacentes aux faces du logement du membre de support sont garnies d'un matériau de blindage, pour éviter que des radiations réfléchies par le logement du support ne puissent atteindre les détecteurs fixés à proximité du logement.

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