دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n pi: a group of polymers that can maintain or increase the viscosity of bentonite while flocculating other clay solids in the mud. With bentonite extenders, desired viscosity can often be maintained using only half the amount of bentonite that would otherwise be required.

n: C6H6 colourless, volatile, flammable toxic liquid aromatic hydrocarbon used as a solvent and as a motor fuel.

an aromatic (cyclic or ring structure) compound, present in very minor quantities in many crude oils.

v: to make a gift of personal property by means of a will. Compare devise. Bernoullis theorem n: a mathematical expression of the conservation of energy in streamline flow;the theorem states that the sum of the ratio of the pressure to the mass density, the product of the gravitational constant and the vertical height. and the square of the velocity divided by 2 are constant.

a quarried sandstone with from 4500 to 9000 psi UCS, used commonly in laboratory flow testing.

the equation is used in the design of chokes and explains the manner in which pressure in the body in the body of the choke, downstream of the first pressure drop, is lower than the eventual recovery pressure at the end of the choke.

n: (BACT) an air emission standard of technology determined by the states on a case-by-case basis. The BACT is applied in attainment areas that meet or exceed NAAQS. and states can consider cost and economic impact when determining exactly what the BACT is and how it will be applied in a specific case.

a correction factor for the Darcy Equation to account for changes in pressure and fluid saturation along a fracture.

n: one of the extremely small particles, sometimes called rays, emitted from the nucleus of a radioactive substance such as radium or uranium as it disintegrates. Beta particles have a negative charge.

an electron emitted with high energy and velocity from a decaying nucleus.

a conditional ratio requirement on a filtering system that compares the number of particles of a certain size in the unfiltered and filtered fluid. A beta rating of 1000 at 5 microns means that there is one particle of 5 micron or greater size in the filt

n: (b) measure of the relationship of the size of the pipe through which fluid is flowing and the size of a restriction, such as an orifice.