Downhole tool, including shock absorber

Details Downhole tool, including shock absorber Downhole tool, including shock absorber

E - Fixed Constructions

21

B

73/172, 166/2

E21B 49/00 (2006.01) E21B 23/10 (2006.01) E21B 47/01 (2006.01) E21B 47/06 (2006.01)

Patent

CA 2011139

In a preferred embodiment, an electronic temperature gauge is carried into a well bore within a pressure-sealed housing which can free fall through a drill string to impact upon a drill bit connected at the bottom of the drill string. A shock absorber is connected at the bottom of the housing to absorb the shock upon impact of the apparatus on the drill bit. The shock absorber has a relatively linearized shock absorbing response in the preferred embodi- ment. Additional structural features provide further cushioning of the gauge during transit and upon impact.

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