Out-running:

A condition in which fluid is free-falling down the well at a faster rate than the pumps can handle.

2.

In wireline, trying to pull out of the well faster than the wireline tools are being blown upwards by unexpected pressure.

3.

Trying to pump out a gas influx before the expansion of gas reduces pressure allowing the well to kick.

Terms Related to Out-running

• Lubricate

  1. To apply grease or oil to moving parts 2. To lower or raise tools in or out of a well with pressure inside the ...

• Wireline formation tester

  A formation fluid sampling device, actually run on conductor line rather than wireline, that also logs flow and shut-in pressure in rock near the borehole. ...

• Friction loss

  A reduction in the pressure of a fluid caused by its motion against an enclosed surface (such as a pipe). As the fluid moves through ...

• Stuffing box

  A device that prevents leakage along a piston, rod, propeller shaft, or other moving part that passes through a hole in a cylinder or vessel. ...

• Drilling break

  1. A sudden increase in the drill bit's rate of penetration. It sometimes indicates that the bit has penetrated a high-pressure zone and thus warns ...

• Air drilling

  A drilling technique whereby gases (typically compressed air or nitrogen) are used to cool the drill bit and lift cuttings out of the wellbore, instead of ...

• Wireline entry guide

  A flared-end sub run on the end of the tubing string to permit easy access of wireline tools into the tubing id.