Method of protecting a cased pipeline from corrosion
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United States of America Patent
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May 15, 1990
Grant Date -
N/A
app pub date -
Sep 12, 1988
filing date -
Sep 12, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Tall oil pitch is used as casing fillers in the interstitial spaced between a pipeline and a surrounding casing pipe. The tall oil pitch can be used per se or can be modified by: increasing its specific gravity above 1.0; increasing its pour point or dropping point; increasing its viscosity; decreasing its pumpability temperature. The tall oil pitch is pumped into the interstitial space between the pipeline and the casing pipe.
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