دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

the absorption and modification of the clay matrix by a reactive water.

n: See surface hydration.

n: cement that expands as it sets to form a tighter fit around casing and formation.

n: refer toswelling cement

cement with additives that promote volumetric cement expansion.

n: refer to swelling cement

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

n: the partial or complete collapse of the walls of a hole resulting from internal pressures due primarily to swelling from hydration or formation gas pressures. See caving.

n: the partial or complete collapse of the walls of a hole resulting from internal pressure due primarily to swelling from hydration or formation gas pressure. See also sloughing.

partial or full collapse of the wellbore by particles of shale.

n: A mud that slows or stops hydration, swelling and disintegration of shales. A variety of mud types have been labeled as inhibitive muds. The degree of inhibition is not quantitative, but qualitatively they range from highly inhibitive (balanced-activity

n: a drilling fluid to which chemicals have been added to prevent it from causing clay particles in a formation to swell and thus impair the permeability of a productive zone. Salt is a mud inhibitor.

n: a drilling fluid having an aqueous plase with a chemical composition that tends to retard and even prevent( inhibit) appreciable hydration (swelling ) or dispersion of formation clays and shales through chemical and/or phsical means.