Washpipe:

A short length of surface-hardened pipe that fits inside the swivel and serves as a conduit for drilling fluid through the swivel.

2.

Sometimes used to mean washover pipe.

Terms Related to Washpipe

• Burn shoe

  A milling device attached to the bottom of washpipe that mills or drills debris accumulated around the outside of the pipe being washed over. Usually, ...

• Wash over

  To release pipe that is stuck in the hole by running washover pipe. The washover pipe must have an outside diameter small enough to fit ...

• Hook

  A large, hook-shaped device from which the swivel is suspended. It is designed to carry maximum loads ranging from 100 to 650 tons (90 to ...

• Riser pipe

  The pipe and special fittings used on floating offshore drilling rigs to establish a seal between the top of the wellbore, which is on the ...

• Washover

  The operation during which stuck drill stem or tubing is freed using washover pipe.

• Drill stem

  All members in the assembly used for rotary drilling from the swivel to the bit, including the kelly, drill pipe and tool joints, drill collars, ...

• Dutchman

  A piece of pipe that has been twisted off inside a female connection; or a short section of material, such as belting or pipe, used ...