Method and apparatus for determining path orientation of a...

Details Method and apparatus for determining path orientation of a... Method and apparatus for determining path orientation of a...

E - Fixed Constructions

21

B

E21B 7/04 (2006.01) E21B 47/00 (2006.01) E21B 47/022 (2006.01) E21B 47/12 (2006.01)

Patent

CA 2110060

A method and apparatus are disclosed for determining the position of a centerline of a passageway (11) by using a measuring instrument (19, 21) which passes through the passageway (11) taking periodic and successive axial strain measurements which are in turn used to form an interconnected series of circular arc segments representing the centerline.

Méthode et dispositif pour déterminer la position de l'axe longitudinal d'un passage (11) au moyen d'un instrument de mesure (19, 21) qui effectue le long du passage (11) des mesures de la contrainte axiale à intervalles réguliers, lesquelles mesures sont ensuite utilisées pour former une série de segments d'arc représentant l'axe longitudinal.

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