دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: Borehole axis deflect vertical line. Deviation angle and azimuth can be measured by inclinometer.

n: a test in which different chemicals are added to bottle samples of an emulsion to determine which chemical is the most effective at breaking the emulsion into oil and water. Once an effective chemical is determined, varying amounts of it are added to bottle samples of the emulsion to determine the minimum amount required to break the emulsion effectively.

n: The part of the drill string that is below the drill pipe. It usually consists of drill collars, stabilizers and various other components.

n: a submersible pump configuration in which the pump and die motor sections are reversed, with the pump intake through a stinger at the bottom of the unit. It is used where casing size prohibits the desired production volume because of tubing friction loss or pump diameter restriction.

n: the portion of the drilling assembly below the drill pipe. It can be very simple - composed of only the bit and drill collars - or it can be very complex and made up of several drilling tools.

n: a device used to separate oil and gas at the bottom of wells to increase the volumetric efficiency of the pumping equipment.

n pi: 1. the liquids and the residue that collect in the bottom of a vessel (such as tank bottoms) or that remain in the bottom of a storage tank after a period of service.2. the residual fractions remaining at the bottom of a fractionating tower after lighter components have been distilled off as vapours.

n: a rapid dive with a very short bottom time to minimise decompression time.

an NMR log that measures bound fluid volume.

the deviation between 30o and 60o where refluxing (dropout and reverse flow) of particles and heavier liquid occurs in a lower rate well. The area in which gas bubbles may rise through fluid at 4 to 7 times that in a vertical well.