دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the motion a bit makes when it does not rotate around its centre but instead drills with a spiral motion. It usually occurs to a bit drilling in a soft or medium soft formation when the driller does not apply enough weight or does not rotate the bit fast enough. A whirling bit drills an overgauge hole (a hole larger than the diameter of the bit) and causes the bit to wear abnormally.

n: a knot used primarily in lifting heavy equipment with the catline, since it can be readily tied and untied regardless of the weight of the load on it.

n: kinking when lifting heavy object with cathead line.

n: a condition in which the weight on a bit tooth has been so great that the tooth has dulled until its softer inner portion caves over the harder case area.

n: The tipping becomes blunt due to the teeth of cone bit suffers oversized load.

n: how much weight the brake can stop in a given length of time. branch line n: a line, usually a pipe, joined to and diverging from another line. branded distributor n: gasoline wholesaler who, under the suppliers brand name, provides his or her own financing, transportation, and storage and who may also retail.

the point in the well or the weight applied where the pipe buckles (sinusoidal bending) and stops or significantly slows during pipe running in a horizontal well.

n: the apparent loss of weight of an object immersed in a fluid. If the object is floating, the immersed portion displaces a volume of fluid the weight of which is equal to the weight of the object.

n: The upward force acting on an object placed in a fluid. The buoyancy force is equal to the weight of fluid displaced by the object. Buoyancy can have significant effects over a wide range of completion and workover activities, especially in cases in which

the amount of weight that is offset by lift from the fluid when the piece of equipment is immersed in the fluid.

n: the weight of the drill stem in a mud-filled borehole. Buoyant weight is less than the weight of the drill buoyant effect of stem in air because of the mud on the drill stem.

n: The weight of object in the liquid.

the weight of a string or piece of equipment immersed in the wellbore fluid. It is strongly dependent of the density of the wellbore fluid.

by weight of the blend.

by weight of cement.