US 2003/0116353 A1Published application

Shot direction indicating device

AssigneeBaker Hughes Incorporated

InventorsMorten Iversen, Kenneth Latveit, Knut Henriksen, Kristian Vargervik, Tim Sampson

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Abstract

One embodiment of the present invention discloses a shot indication device that indicates the orientation of a downhole tool 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 secured within the downhole tool. Formed within the indicator housing is an annulus whose axis is parallel to the axis of the downhole tool. Disposed inside of the annulus is an indicator element that freely moves about the circumference of the annulus.

Claims10

Dependent claims

An apparatus for use in more effectively placing perforations in a wellbore comprising:

an elongated housing formed for axial insertion into said wellbore;
one or more shaped charges disposed within said housing;
an indicator mechanism created from a deformable material secured within said elongated housing, said indicator mechanism formed to comprise an annulus formed within, said annulus having an inner surface and an outer surface forming opposing sides and having an axis parallel to the elongated housing axis;
and
an indicator element disposed and freely moveable within said annulus, such that upon rotation of said elongated housing said indicator element responds to gravitational forces and moves along the annulus to a location closest to the source of the gravitational forces, and upon sufficient convergence of said opposing sides, said indicator element is squeezed between said opposing sides and is locked into a stationary position.

2 more elements

Dependencies are inferred from the claim text.