Shot direction indication device

Details Shot direction indication device Shot direction indication device

E - Fixed Constructions

21

B

E21B 43/119 (2006.01)

Patent

CA 2471542

One embodiment of the present invention discloses a shot indication device (20) that indicates the orientation of a downhole tool (10) that is inside of a wellbore at a particular time. The shot indication device can also be used to determine the orientation of a perforating gun with shaped charges at the instant the shaped charges are detonated. The shot indication device is comprised of an indicator housing (22, 23, 25, 26) secured within the downhole tool. Formed within the indicator housing is an annulus (21) whose axis is parallel to the axis of the downhole toll. Disposed inside of the annulus is an indicator element (24) that freely moves about the circumference of the annulus.

Dans un mode réalisation, l'invention concerne un dispositif d'indication de tir (20), qui indique l'orientation d'un outil de fond (10) situé dans un puits de forage, à un moment particulier. Le dispositif d'indication de tir peut également s'utiliser pour déterminer l'orientation d'un perforateur muni de charges creuses, à l'instant où lesdites charges creuses sont détonées. Le dispositif d'indication de tir comprend un boîtier indicateur (22, 23, 25, 26) fixé dans l'outil de fond. Il est prévu de former dans le boîtier indicateur, un espace annulaire (21) dont l'axe est parallèle à l'outil de fond. Un élément indicateur (24) qui se déplace librement autour de la circonférence de l'espace annulaire est prévu dans ledit espace annulaire.

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