دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: 1. the angle, variable with geographic position, between the direction in which a magnetic needle points and the true meridian. 2. a turning aside or swerving.

the slope of the production rate vs. cumulative time or volume measurement. The decline of a well predicts how fast it is being depleted.

n: a condition resulting from the formation of gas bubbles in a divers blood or tissues during ascent. Failure to rid tissues of the inert gas may cause a wide variety of symptoms, including pain, nausea, paralysis, unconsciousness, temporary blindness, and even death. Also called the bends.

n: Efflux velocity decreases continuously due to diffusional effect and resistance of submerged fluid. Decreasing coefficient of jet velocity is the ratio of the circulation velocity at any point of center line of jet and circulation velocity at outflow poin

often massive deposits of coccolith fragments. Usually very high porosity and limited permeability unless fractured.

n: a change in the angle of a wellbore. In directional drilling, it is measured in degrees from the vertical.

the total change in angle of a wellbore in a given distance.