دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A measure of how quickly the wellbore changes direction, expressed in degrees (of total course change) per 100 or 30m of wellbore length.

n: a hole that is drilled vertically. The total hole angle is restricted. and the hole does not change direction rapidly no more than 3 per 100 feet (30.48 metres) of hole.

n: Vertical wellbore.It can be think as straight hole when well deviation and azimuth not exceeding the provided limit.

an essentially straight hole with less than 5o total deviation from surface to bottom hole and dogleg severity less than 3o/100 ft.