Definition(s)
Piggyback
Two pipes attached at regular intervals with clamps, where either or both of the pipes can be flexible..
Source: API SPEC 17J, Specification for Unbonded Flexible Pipe, Third Edition, July 2008. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
Two pipes attached at regular intervals with clamps, where either or both of the pipes can be flexible..
Source: API SPEC 17J, Specification for Unbonded Flexible Pipe, Third Edition, July 2008. Global Standards