دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the active ingredient of slaked (hydrated) lime, and the main constituent in cement (when wet). Referred to as lime" in field terminology. Its symbol is Ca(OH)2

n: Ca(OH)2, white powder. The pH value of its saturated solution is 12.4. Usually used for depressant of inorganic salt, calcium mud and clearing excessive carbanion in drill fluid.

Ca(OH)2, slaked lime.

n: calcium hydroxide, Ca(OH)2, a dry powder obtained by treating quicklime with enough water to satisfy its chemical affinity for water.

n: see calcium hydroxide.

n: a caustic solid that consists primarily of calcium oxide (CaO). Many forms of CaO are called lime, including the various chemical and physical forms of quicklime, hydrated lime, and even calcium carbonate. Limestone is sometimes called lime.

n: commercial form of calcium hydroxide.

n: a natural or artificial siliceous material commonly added to portland cement mixtures to impart certain desirable properties. Added to oilwell cements, pozzolans reduce slurry weight and viscosity, increase resistance to sulfate attack, and influence factors such as pumping time, ultimate strength, and watertightness.

n: A siliceous or siliceous and aluminous material that possesses little or no cementitious value. In a finely divided form and in the presence of moisture, however, pozzolan reacts chemically with calcium hydroxide to form compounds possessing cementitious

n: a compound that is formed (along with water) by the reaction of an acid with abase. A common salt (table salt) is sodium chloride, Naa, derived by combining hydrochloric acid, Ha, with sodium hydroxide, NaOH. The result is sodium chloride and water, H2O. This process is written chemically as Ha + NaOH ~ NaCI + H2O. Another salt is calcium sulfate, CaS�4, obtained when sulfuric acid, H2SO4 is combined with calcium hydroxide, Ca (OH)2