18 July 2017

Negative Pressure Testing

A test in which the hydrostatic pressure is reduced such that the net differential pressure direction is from the formation into the wellbore. (Duplicate of term […]
18 July 2017

Negative Test

A test in which the hydrostatic pressure is reduced such that the net differential pressure direction is from the formation into the wellbore.
18 July 2017

Nipple

A tubular pipe fitting threaded on both ends and less than 12 inches long.
18 July 2017

Nipple chaser

A material-man whose duty it is to procure and deliver to the drilling rig the necessary tools and equipment to carry on the work.