injecter un bouchon de boue très lourde

Désignations

Codes : pays ou zone où la désignation a cours (CH, FR, DE, EU = Union européenne, INT = usage international). Une désignation barrée est déconseillée.

Définitions

anglais

To pump a quantity of heavy mud into the drill pipe. Before hoisting drill pipe, it is desirable (if possible) to pump into its top section a quantity of heavy mud, or a slug, that causes the level of the fluid in the pipe to fall; thus, when a stand of pipe is unscrewed, the drilling fluid has been emptied out of it so that the crew members and the rig floor are not contaminated with the fluid.