دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the amount of oil produced by a well or a lease. exclusive of its S& W content. Net production is also called working-interest oil (i.e., the oil produced by all of its wells multiplied by the work- ing interest of a company in the wells).

the company’s share of the production after royalties and partners shares are removed.

n: the portion of oil and gas production money out of which operating and development costs are paid (i.e., the portion remaining after deduction of royalty interests).

that part of the proceeds less royalty payments.

n: the share of production remaining to the working-interest owners after all royalties, overriding royalties, production payments, and other reservations or assignments have been deducted..

n: a reaction in which the hydrogen ion of an acid and the hydroxyl ion of a base unite to form water, the other ionic product being salt.

n: a neutral particle ejected from the nucleus of an atom when the neutronto- proton ratio is too high. Neutrinos are difficult to detect, because of their penetrating power, and are not recorded in logging.

n: a radioactivity well log used to determine formation porosity. The logging tool bombards the formation with neutrons. When the neutrons strike hydrogen atoms in water or oil, gamma rays are released. Since water or oil exists only in pore spaces, a measurement of the gamma rays indicates formation porosity. See radioactivity well Logging.

A log whose source emits neutrons into the formation. Neutrons interact with hydrogen nuclei resulting in an energy loss that is converted to neutron porosity. All hydrocarbons and water contain hydrogen, but the formation usually does not. The amount of

n: radiation produced by nuclear disintegration, as when a nucleus is penetrated by gamma rays from a highly radioactive source. Neutron radiation can penetrate several feet of lead and is so difficult to observe that it remained undiscovered long after alpha, beta, and gamma rays were well known.

abbr: National Institute for Occupational Safety and Health.

n: 1. an unwanted component of a signal that obscures the information content. 2. any spurious voltage or current arising from external sources and appearing in the circuits of a device.

n: a kinds of logging method that records the motion voice of fluid in cement channle and out of casing.

A sound recording downhole. Best performance of noise logs is with gas flow. Gas flow can be heard to about 10 actual ft3/D (Note – not standard ft3/day). At very low gas flow rates (q<400 actual ft3/D),gas flow can be estimated from millivolts of noise