دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a measure of the ability of a single fluid (such as water, gas, or oil) to flow through a rock formation when the formation is totally filled (saturated) with that fluid. The permeability measure of a rock filled with a single fluid is different from the permeability measure of the same rock filled with two or more fluids. Compare effective permeability, relative permeability.

permeability to a single phase fluid in a cleaned core.

use of a mineral acid (typically HCl or HCl/HF) or an organic acid (typically acetic or formic) to remove damage or stimulate the permeability of a formation.

n: A very important target. The lower the filter loss of drill fluid, the more steady the borehole face is.

n: An impermeable layer of rock overlying an oil or gas reservoir and preventing the migration of fluids.

a sealing formation of very low permeability that forms the top or the seal in a reservoir.

n: 1. a salt of carbonic acid. 2. a compound containing the carbonate radical (CO3) 3. a carbonate rock.

n: The different carbonate of alkaline earth element.

any of the many rocks composed of calcium carbonate (limestone) or magnesium carbonate (dolomite) or other acid soluble rocks with a common CO3-2 ionic charge. The pores may be poorly connected and matrix permeability (non fractures) are often much lower

n: A kind of white, loose and earthy limestone whose main chemical component is calcium carbonate. Usually used for heavy weight additive of drill fluid.

an often highly porous but lower permeability carbonate composed of fine grained marine sediments such a coccoliths.

reactions involving the rock and connate fluids in which parts of the matrix are filled by scale or mineral growths or removed and become high permeability flow channels.

a brine that does not create formation damage or permeability reduction when introduced into a formation.

a relative permeability effect where condensate, usually hydrocarbon, drops out of the vapor phase around the wellbore when the pressure drops below the dew point in response to drawdown or depletion. Gas rates can be severely reduced by the permeability

the permeability of the pack times its width. Expressed in md-ft.