دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the surface on the screen cloth of vibrosieve which departs the cuttings

n: the ratio between the grandient of formation horizontal stress and the gradient of formation vertical stress

n: the value of an AC current or voltage that produces the same heating effect as a direct current of the same amount;equal to 0.707 times the maximum value. Electrical measuring devices read effective values unless otherwise indicated. Also called RMS value.

n: the differience between gradient of lap seam pressure and the gradient of hole pressure

n: a tapered connection with 8 threads per inch (centimetre). One turn equals 0.125 inch (0.318 centimetre) of travel. A very common oilfield connection.

a thread with 8 threads per inch.

n: a nozzle like device that increases the velocity of a fluid, It is often used to mix two fluids or a fluid and solids,

n: refer toeductor

n: the modulus is defined as the value only when the relation of the positive pressure and normal strain is linear according Hookes law

n: a meter that measures voltage directly, rather than in terms of its relation to current.

n: a drilling rig on which the energy from the power source usually several diesel engines is changed to electricity by generators mounted on the engines. The electrical power is then distributed through electrical conductors to electric motors. The motors power the various rig components. Compare mechanical rig.

n: a kind of drilling rig powered by electric force and all of whose assemblies are driven by the electric conductor

a drilling rig where the power source is electricity provided by a generator.