A type of mobile offshore drilling unit (MODU) that has a part of its structure in contact with the sea floor when it is on site […]

The lowest or deepest part of a well. adj pertaining to the bottom of the wellbore.

A device with a restricted opening placed in the lower end of the tubing to control the rate of flow. See Choke.

1) the pressure at the bottom of a borehole. It is caused by the hydrostatic pressure of the wellbore fluid and, sometimes, by any back-pressure held […]