دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a kind of soft rock stratum with favorable flexibility such as the clay ,rock salt and so on

n: measure of steels ability to withstand a crack or flaw without fracturing. It can be altered by changing chemical composition, microstructure, and heat treatment. Compare brittleness.

n: inspect and examine the used tooth, bearing ,diameter and other parts of the bit to evaluate the situation of abrasion so as to offer the reference to ulterior use of bit and offer the foundation
for the further design and fabrication

n: a surface separation method used to dispart the bergmeal producing in air drilling to prevent the bergeal dengering peoples health and age of the equipment

n: in order to differentiate from the common fluid ,some fluid is dyed as a result a seccion of chromatic fluid forms during cycling so as to calculate the pipe hole ,short-circuit location or the real retarded time by which the cuttings reverse out form t

n: trade name for a down- hole motor driven by drilling fluid that imparts rotary motion to a drilling bit connected to the tool. thus eliminating the need to turn the entire drill stem to make hole. Used in straight and directional drilling.

n: a condition in which several processes act simultaneously to maintain a system in an overall state that does not change with time.

n: a kind of instrument which can proceed filtration experiment of drilling fluid under the situation of circulation

n: a kind of instrument which can proceed filtration experiment of drilling fluid under the situation of circulation

n: the process of filteration because of the pressure difference which occurs when the fluid is flowing