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Alkalinity Control

Adjust water-based fluid pH

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M-I SWACO provides a suite of additives to control alkalinity in water-based and invert-emulsion fluids. These agents may increase or decrease the alkalinity within the drilling fluid. Alkalinity agents help provide fluid stability, improve polymer hydration and performance, and treat out contaminants like cement, carbon dioxide, hardness, and H₂S encountered in mix waters or while drilling.

In addition to the products listed below, we also offer

magnesium oxide, a moderate-pH buffer
potassium hydroxide
sodium bicarbonate, a low-pH buffer.

Alkalinity Control Offerings

Source of calcium and alkalinity in both water- and oil-based drilling fluids

Lime, hydrated lime, and slaked lime are all common names for calcium hydroxide.

Sodium carbonate

Weak base that is soluble in water and dissociates into sodium and carbonate ions in solution.

Reduce pH, precipitate soluble calcium, and sequester iron

Reduce pH and remove calcium when drilling cement to reduce the potential of crosslinking polymers from iron.

Used in water-base muds

Strong base that is extremely soluble in water and dissociates into sodium and hydroxyl ions in solution.

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Product Sheet Soda Ash

A weak base that is soluble in water and dissociates into sodium (Na) and carbonate (CO3) ions in solution.

Product Sheet Lime

Used as a source of calcium and alkalinity in both water- and oil-based drilling fluids.

Product Sheet Citric Acid

Reduce the pH of drilling fluids and remove calcium.

Product Sheet Caustic Soda

Used in water-based fluids as a source of hydroxyl ions to control pH.