دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: dissolved calcium ions in sufficient concentration to impart undesirable properties, such as flocculation, reduction in yield of bentonite, and increased fluid loss, in a drilling fluid. See also anhydrite, calcium carbonate, calcium sulphate, gypsum, lime.

n: The process that calcium ion enters into the drilling fluid when drilling in the calcareous formation or cement plug.

n: the half-neutralized sodium salt of carbonic acid, NaHCO2, used extensively for treating cement contamination and occasionally other calcium contamination in drilling fluids.

n: A chemical with the formula NaHCO3. It is called bicarb at the drilling rig and is used to treat cement contamination in water mud. When cement hydrates, substantial amounts of lime, Ca(OH)2, are produced. As the cement sets, less free lime is available.

used for treating cement contamination and calcium contamination in muds.

n: Na2CO3, used extensively for treating various types of calcium contamination. Also called soda ash.

n: A chemical with the formula Na2CO3. It is called soda ash at the drilling rig and is used to treat most types of calcium ion contamination in freshwater and seawater muds. For cement contamination, sodium bicarbonate is used. Calcium ions from drilling gy