TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A special coupling device, inserted one or two joints above the bottom of the casing string, that contains a check valve to permit fluid to pass downward but not upward through the casing.  3, fiche 1, Anglais, - float%20collar

Record number: 1, Textual support number: 1 CONT

The float collar prevents drilling mud from entering the casing while it is being lowered, allowing the casing to float during its descent and also decreasing the load on the derrick. The float collar also prevents a backflow of cement during the cementing operation.  3, fiche 1, Anglais, - float%20collar

Fiche 1,  Justifications,  Français

Fiche 1,  Justifications,  Espagnol