دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the reduction of permeability in a reservoir rock caused by the invasion of drilling fluid and treating fluids to the section adjacent to die wellbore. It is often called skin damage.

n: damage to the productivity of a well resulting from invasion into the formation by mud particles or mud filtrates. Asphalt from crude oil will also damage some formations.

an obstruction to flow. Usually a reduction of permeability.

n: pay formation hole wall is macerated by all kinds of filters ,making the intrinsic permeability of near wellbore layer droped largely.a permeability plugging ring is called formation damage degree.

n: a condition that lead to the drilling is not successfully because of the divergence of wellbore in drilling or after drilling through the layer.

n: the angle at which a formation bed inclines away from the horizontal. Dip is also used to describe the orientation of a fault.

n: a theory that use the different speeds in the different layers to interpret the alternation of hole angle in dipping formation.

n: an equipment that is eable to divide annular resulting from swelling,which installed in the first casing of string or in the necessary places, protecting the bottom hole layer in cement job,

n: a measure of the electrical resistance of fluids in a formation. formation sensitivity n: the tendency of certain producing formations to react adversely to invading filtrates.

a measurement of the electrical resistivity of a formation. The measurement will be significantly affected by the type of fluid and the salinity of water based fluids within the pores of the rock.

the tendency of a formation to react with fluids, usually filtrates from injected fluids.

n: mud fluids filter loss is very large, free water seeps into unconsolidated formation resulting in layer swelled.

floating production, storage and offloading. An alternative to pipelines.