18 July 2017

Nipple down

Disassembly of well control equipment and lines for removal.
18 July 2017

Non-shearable

A non-shearable is normally accepted as a component of the drillstring: BHA or a large size casing string that cannot be sheared under expected wellbore conditions […]
18 July 2017

Normal circulation

The smooth, uninterrupted circulation of drilling fluid down the drill stem, out the bit, up the annular space between the pipe and the hole, and back […]
18 July 2017

Nozzle

A small spout to direct the flow of fluid efficiently.