دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the maximum volume of natural gas that can be processed through an absorber at a specified absorption oil rate, temperature, and pressure without exceeding pressure drop or any oilier operating limitation.

n: a large, sloping sedimentary deposit at the mouth of a canyon, laid down by intermittently flowing water, especially in arid climates, and composed of gravel and sand. The deposit tends to be coarse and unworked, with angular, poorly sorted grains in thin, overlapping sheets. A line of fans may eventually coalesce into an apron that grows broader and higher as the slopes above are eroded away.

land counterpart of a river delta. Characteristic of sediments that have been transported by a fast moving stream then dropped out of the flow as the stream velocity drops as it spreads out. Typical of zones of heavy water runoff such as found at the base

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: the average of all the instantaneous values of current or voltage in one-half a cycle of AC electricity;equal to 0.636 times the maximum value.

n: The rate at which drift angle is increasing as the wellbore is being deviated from vertical. Usually measured in degrees per 100 ft drilled.

n: the pressure at a given temperature for a hydrocarbon system of fixed composition at which the vapourliquid equilibrium values of the various components in the system become or tend to become unified. The convergence pressure is used to adjust vapour-liquid equilibrium values to the particular system under consideration. conversion n: the change in the chemistry of a mud from one type to another. Reasons for making a conversion may be (1) to maintain a stable well bore, (2) to provide a mud that will tolerate higher weight, or density, (3) to drill soluble formations, or (4) to protect producing zones. Also called a breakover.

a minimum velocity to lift liquids in gas flow.

n: The well whose wellbore deviates from vertical orientation and exceeds deviation angle required by straight hole.

n: See deviated hole.

a well with an inclination other than zero degrees from vertical. In practice, deviated wells are usually more than about 10o from vertical.

n: A wellbore that is not vertical. The term usually indicates a wellbore intentionally drilled away from vertical.