Downhole shock absorber
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United States of America Patent
Stats
-
Jul 2, 2002
Grant Date -
N/A
app pub date -
Sep 20, 1999
filing date -
Sep 20, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A shock absorber for damping shock energy generated by downhole perforating guns or stimulation devices is described. The shock absorber includes a spring assembly including at least a first spring and a second spring, the first spring having a tension greater than the second spring; a damper assembly; and a housing retaining the spring assembly and the damper assembly and including ends adapted for connection into a casing perforation assembly. The provision of springs of increasing stiffness permits the force generated by the perforating gun to be absorbed gradually and smoothly.
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