دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: natural mud are mud that are encountered when drilling various formations. The yield of these clays varies greatly and they may or may not be purposely incorporated into the mud system.

NORM scale, usually barium or strontium sulfate scale with very low level radiation from atoms of uranium, thorium and potassium in the matrix of the scale.

n: a globe valve that contains a sharp-pointed, needle like plug that is driven into and out of a cone-shaped seat to control accurately a relatively small rate of fluid flow. In a fuel injector, the fuel pressure forces the needle valve off its seat to allow injection.

a low volume, small orifice, high pressure bleed valve.

n: sticking of a tool that caused by the pressure of drilling fluid volumn below the pressure of layer.

n: the total volume of all petroleum liquids. excluding S&W and free water, at observed temperature and pressure.

n: the power at the the mouth of pump connected with the flange that the unite quality liquid prevents the intake fluid vaporizing.

n: the minimal power that the unite quality liquid prevent the intake fluid vaporizing when flowing the mouth of pump connected with the flange to the fluid cylinder.

n: a lease agreement in which the lessor shares in the net proceeds of production after the lessee has recovered the initial investment. The various expenses allowed as deductions from gross proceeds are points of negotiation. Also applies to working-interest relationships.

n: (NSV) the total volume of all petroleum liquids, excluding S&W and free water, corrected by the appropriate temperature correction factor (Ctl) for the observed temperature and API gravity, relative density, or density to a standard temperature such as 60�F or IS.C, and also corrected by the applicable pressure correction factor (Cpl) and meter factor.