دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a reaction in which an element has been changed into an unstable isotope during bombardment by neutrons.

near formation area is irradiated with neutrons that transform some nuclei into isotopes. The isotopes produced can be detected by radioactive energy levels and decay time. The original elements can be described from this behavior.

an isotope tracer in a bead with the same density of the flowing fluid that is used to track fluid flow rates and therefore fluid entry and exit points along the wellbore.

bacteria generated natural gas, found at shallow depths and in many water wells. Usually contains C14 isotope. See also thermogenic gas as a gas that has a biological origin but has been modified from the original organic state by time at temperature and

one of three naturally occurring isotopes of carbon. The half life of the C14 isotope makes it idea for determining the difference between thermogenic methane (C14 absent) and biogenic gas.

the rate at which a population of radioactive atoms decays into stable daughter atoms. Rate expressed in half-life of the parent isotope.

n: the isotope of the element hydrogen that has one neutron and one proton in the nucleus;atomic weight is 2.0144.

n: a form of an element that has the same atomic number as its other forms 1:MJt has a different atomic mass. Isotopes of an element have the same number of protons 1:MJt different numbers of neutrons in the nucleus.

one of several forms of an element, all having the same number of protons but differing in the number of neutrons.

n: one of the alkali metal elements with a valence of 1 and an atomic weight of about 39. Potassium compounds, most commonly potassium hydroxide (KOH),are sometimes added to drilling fluids to impart special properties, usually inhibition.

n: An element with an atomic number of 19. The 40K isotope is radioactive, decaying with the emission of a single gamma ray of 1.46 MeV with a half-life of 1.3 * 109 years to give a stable isotope of argon. Potassium is the largest source of natural radioact

one of the natural isotopes that as a trace element may incorporate into the matrix of naturally forming barium or strontium sulfate scale and make it a very low level radioactive material (NORM scale).