Casing string with its uppermost point inside a previous casing string and not in the wellhead.
Source: ISO 16530-1:2017, Petroleum and natural gas industries – Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards
“Casing liner” means a casing that is suspended from a string of casing previously installed in a well and does not extend to the wellhead (tubage partiel).
Source: Canada Oil and Gas Drilling and Production Regulations, SOR/2009-315, February 2013. Regulations
Source: Drilling and Production Guidelines, The Canada-Nova Scotia Offshore Petroleum Board and Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada, March 31, 2011. Regulatory Guidance
Source: Nova Scotia Offshore Petroleum Drilling and Production Regulations, SOR/2009-317, Canada, current to May 31, 2012. Regulations