دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: Refers to the end of the drilling line which is not reeled on the hoisting drum of the rotary rig. This end of the drilling line is usually anchored to the derrick substructure and does not move as the traveling block is hoisted, hence the term dead line.

n: see deadline tie-down anchor.

n: A device to which the deadline is attached, securely fastened to the derrick substructure.

n: a device to which the deadline is attached, securely fastened to the mast or derrick substructure. Also called a deadline anchor.

n: See dead line anchor.

n: The metal base used to install derrick mask under the legs of derrick mask.

n: See derrick substructure.

v: to thread the drilling line through the sheaves of the crown block and traveling block. One end of the line is secured to the hoisting drum and the other to the derrick substructure.