System for applying torsional force to a buried pipe to facilitate extraction
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United States of America
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Feb 27, 2024
Grant Date -
N/A
app pub date -
Jun 1, 2021
filing date -
Jun 1, 2021
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system for breaking the skin friction between an underground pipe section and the surrounding soil. The system uses a pipe twisting device attached to one end of the pipe section. The pipe twisting device applies a torsional force to the pipe section so as to torsionally deform the pipe section. Such deformation breaks the skin friction between the pipe section and the surrounding soil. After the skin friction is broken along the entire length of the pipe section, an apparatus configured to apply an axial force to the pipe section pulls the pipe section out of the soil.
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