Caustic Soda is the common name for Sodium Hydroxide NaOH. It is used primarily to increase and control pH in water-based fluids. Caustic soda is also used as an additive in bentonite mud systems to increase the mud viscosity, and to neutralize any acid gas (such as hydrogen sulfide and carbon dioxide) which may be encountered in the geological formation as drilling progresses. Caustic soda is a strong alkali and produces a strong base solution. It is a hazardous material to handle due to its high pH and the fact that it reacts with water to generate heat. Caustic soda will cause severe burns.
Features and Benefits:
- Is a source if hydroxyl ion to increase and control pH
- Provides pH control required for effectiveness of drilling fluid additives
- Provides corrosion control through pH
- May be used to precipitate hardness such as Mg++ at pH above 10.3
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