Summary Treatment of Mud Contaminants

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CONTAMINANT

CONTAMINATINGION

TREATMENT CHEMICAL

CONCENTRATION PER 100 ppm
CONTAMINANT

Gypsum or Anhydrite

Calcium (Ca ++)

Soda ash if pH okay
Sodium bicarbonate if pH too high

0.1 lb/bbl
0.15 lb/bbl

Cement

Calcium (Ca ++)
Hydroxide (OH)


Sodium bicarbonate


0.15 lb/bbl

Hard Water

Magnesium (Mg ++)
Calcium (Ca ++)

Caustic Soda to pH 10.5 then add Soda ash

0.1 lb/bbl
0.1 lb/bbl

Hydrogen Sulphide

Sulphide (S =)

Keep pH above 10 and add zinc Basic carbonate

0.12 lb/bbl

Carbon Dioxide

Carbonate (CO3)
Bicarbonate (HCO3)

Gypsum if pH okay
Lime if pH low
Lime

0.1 lb/bbl
0.05 lb/bbl
0.05 lb/bbl

 

 

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