Mandrel:

Terms Related to Mandrel

• Body lock ring

  An internal mechanism employed in certain tools to lock cones to the mandrel

• Dummy valve

  A blanking valve placed in a gas lift mandrel to block off annular communication to the tubing.

• Concentric piston

  Tubing pressure acting on the net piston area and causing a force to be exerted on a mandrel.

• Barrel (bbl)

  1. A measure of volume for petroleum products in the united states. One barrel is the equivalent of 42 u.s. Gallons or 0.15899 cubic meters ...

• Bumper sub

  A percussion tool run on a fishing string to jar downward or upward on a stuck fish to knock it free. The bumper sub body ...

• Collapse pressure

  The pressure at which a tube, or vessel, will catastrophically deform as a result of differential pressure acting from outside to inside of the vessel or ...

• Storm packer

  A heavy-mandrel service squeeze tool with on-off tool used in drilling operations during storm interruptions.