Calcium contamination:

See also calcium carbonate, calcium sulfate, gypsum.

Terms Related to Calcium contamination

• Calcium-treated mud

  A freshwater drilling mud using calcium oxide (lime) or calcium sulfate (gypsum) to retard the hydrating qualities of shale and clay formation, thus facilitating drilling. ...

• Calcium sulfate

  A chemical compound of calcium, sulfur, and oxygen. Although sometimes considered a contaminant of drilling fluids, it may at times be added to them to ...

• Gypsum

  A naturally occurring crystalline form of calcium sulfate in which each molecule of calcium sulfate is combined with two molecules of water. See calcium sulfate.

• Calcium

  One of the alkaline earth elements with a valence of 2 and an atomic weight of about 40. Calcium compounds are a common cause of ...

• Sodium carbonate

  Used extensively for treating various types of calcium contamination. Also called soda ash.

• Sodium bicarbonate

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

• Calcium carbonate

  A chemical combination of calcium, carbon, and oxygen. It is the main constituent of limestone. It forms a tenacious scale in water-handling facilities and is ...