Cave-in:

Terms Related to Cave-in

• Heaving

  The partial or complete collapse of the walls of a hole resulting from internal pressures due primarily to swelling from hydration or formation gas pressures. ...

• 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 ...

• Caving

  Collapsing of the walls of the wellbore. Also called sloughing.

• Cement

  A powder, consisting of alumina, silica, lime, and other substances that hardens when mixed with water. Extensively used in the oil industry to bond casing ...

• Bullheading

  1. Forcing gas back into a formation by pumping into the annulus from the surface. 2. Any pumping procedure in which fluid is pumped into ...

• Pig

  1. A flow line clearing device, pumped through the line with normal flow. 2. A scraping tool that is forced through a pipeline or flow ...

• Pigging

  To force a device called a pig through a pipeline or a flow line for the purpose of cleaning the interior walls of the pipe, ...