Hydraulic head:

Although “head” refers to distance or height, it is used to express pressure, since the force of the liquid column is directly proportional to its height.

Also called head or hydrostatic head.

Compare hydrostatic pressure.

Terms Related to Hydraulic head

• Snub

  1. To force pipe or tools into a high-pressure well that has not been killed (i.e., to run pipe or tools into the well against ...

• Hydrostatic pressure

  The force exerted by a body of fluid at rest. It increases directly with the density and the depth of the fluid and is expressed ...

• Rotating head

  A sealing device used to close off the annular space around the kelly in drilling with pressure at the surface, usually installed above the main ...

• Hydrostatic head

  See hydrostatic pressure

• Pressure

  The force that a fluid (liquid or gas) exerts uniformly in all directions within a vessel, pipe, hole in the ground, and so forth, such ...

• Circulation loss

  The loss of drilling fluid to a formation, usually caused when the hydrostatic head pressure of the column of drilling fluid exceeds the formation pressure. This ...

• Circulating head

  An accessory attached o the top of the drill pipe or tubing to form a connection with the mud system to permit circulation of the ...