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21:49 Nov 9, 2008
English to French translations [PRO] Tech/Engineering - Petroleum Eng/Sci / Solid Expandable Tubular Technology
English term or phrase:latch-down dart
"Immediately after the cement is pumped, a latch-down dart is dropped. When the dart reaches the launcher, it seats on the float shoe and creates a pressure chamber below the expansion cone.
Expansion is initiated with hydraulic pressure being applied down the drillstring."