Tool string shock absorber

Details Tool string shock absorber Tool string shock absorber

1998-07-23

2000-08-29

Lillis, Eileen Dunn

Wells

Processes

Assembling well part

166297, 1662427, 175321, E21B 2300

Patent

active

061093556

ABSTRACT:
An apparatus and method for absorbing shock downhole in a wellbore. The kinetic energy from a moving tool is absorbed to dissipate such energy, to decelerate the moving tool, or to prevent impact damage from contact between the tool and other downhole components. An actuator has an interference fit with a body such as the interior wall of a tubing section. When the moving tool actuates the actuator to move the actuator relative to the body, kinetic energy is dissipated into the body as the body elastically deforms due to the moving actuator. The amount of energy dissipated can be determined from the strength of the body, the contact dimensions between the actuator and body, and the length of moving contact between the actuator and body.

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patent: 5462140 (1995-10-01), Cazort et al.
patent: 5509475 (1996-04-01), Lewis

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