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PIGGYBACKED PIPELINE ON-BOTTOM STABILITY ANALYSIS

PIGGYBACKED PIPELINE ON-BOTTOM STABILITY ANALYSIS

(OP)
Hello,

I am thinking of the best approach on carrying out on-bottom stability of a 4-inch gas lift line being piggybacked by a 12-inch main pipeline:

-Analyzing just the stability of the 12-inch main line (ignoring the piggybacked line) or

- calculating the equv. WT of both lines , then using it for the on-bottom stability analysis.

Please which is the best or correct approach? Is there any important consideration when analyzing stability for piggybacked pipelines?

RE: PIGGYBACKED PIPELINE ON-BOTTOM STABILITY ANALYSIS

In my "Tubular Steel Structures-theory and Design " book by Troitsky and published by er11the James F Lincoln Welding Foundation, Chapter 11 is dedicated to Underwater Pipeline. You may want to get a copy as it may pertain to your OP.

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