دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

the initial wave of gravel transport when packing a well with a deviation over 55o.

n: The technological process that increase the deviation angle with building assembly and angle build-up treating.

n: The combination of drill tool that decreases the deviation angle in directional drilling.

n: The combination of drill tool that holds the deviation angle in directional drilling.

n: see drift angle.

n: The angle between the tangent of borehole axis and vertical line, measured by inclinometer.

n: see drift angle.

n: See angle of deviation.

the deviation angle (from vertical) at which a solid material will no longer fall down the pipe, but will begin to accumulate on the pipe wall. The angle of repose for dry, round sand is about 62o and for wet sand about 50o to 60o depending on size, shape

n: a deviation from the norm. In geology the term indicates an abnormality such as a fault or dome in a sedimentary bed.

n: The technique used in drilling in order to explore and exploit reservoir. Mainly including wellbore designing, bit choosing, drilling parameter optimization, deviation controling, drilling fluid choosing and drilling hydraulics.

n: pressure produced parallel with the cylinder axis when casing hits a deviation in the hole or a sticky spot and stops. The force pushing down on the pipe causes axial compression.