G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 27/00 (2006.01) E21B 33/124 (2006.01) E21B 47/00 (2006.01) G01F 1/00 (2006.01) G01V 3/00 (2006.01)
Patent
CA 2662742
A measuring head (1) for use in electrical measurements conducted in holes (2, 2a, 2b) drilled in the ground (8) comprises an elongated body (3), adaptable in the hole and comprising an electrode (4), electrically connecting the measuring head with its surroundings, for transmitting an electrical signal between the measuring head and its surroundings. In accordance with the invention, the measuring head (1) comprises insulating means (6), placed on the body (3) on both sides of the electrode (4) along the length of the hole (2, 2a, 2b) in order to form a measuring area (7), electrically insulated from other parts of the hole, around the electrode placed in the hole.
L'invention concerne une tête (1) de mesure servant à réaliser des mesures électriques dans des trous (2, 2a, 2b) creusés dans le sol (8), comprenant un corps allongé (3) pouvant être adapté au trou et pourvu d'une électrode (4) connectant de manière électrique la tête de mesure avec les alentours pour transmettre un signal électrique entre la tête de mesure et les alentours. Selon l'invention, la tête (1) de mesure comprend un moyen (6) d'isolation placé sur le corps (3), des deux côtés de l'électrode (4) et sur la longueur du trou (2, 2a, 2b), de manière à former une zone (7) de mesure électriquement isolée des autres parties du trou autour de l'électrode placée dans le trou.
Ahokas Turo
Hautojaervi Aimo
Rouhiainen Pekka
Posiva Oy
Ridout & Maybee Llp
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