Liquid sodium silicate shale stabilizer for SILDRIL.
SILDRIL L additive is a water‐soluble sodium‐silicate liquid used as a primary chemical for wellbore stabilization. Secondary inhibition is achieved with the use of KCl or NaCl.
Applications
SILDRIL L sodium‐silicate liquid has a 2.6 to 2.8 SiO2 to Na2O ratio. It provides superior chemical inhibition to reactive shales, clay and claystone formations, chalk, and formations interbedded with dispersive clays.
SILDRIL L systems are formulated with conventional drilling‐fluid polymers to achieve the required rheological and fluid‐loss properties. The SILDRIL system is engineered without commercial bentonite. The SILDRIL system has been successfully used in the field with densities varying from 9 to 14 lb/gal (1.1 to 1.7 sg). The temperature limitation of the system can be extended to 275°F (135°C) with the addition of GLYDRIL products.
Advantages
- Highly effective shale and clay stabilizer
- No adverse effect on fluid rheology and filtration properties
- Provides effective corrosion control
- Effective in freshwater and NaCl and KCl salt systems
- Effective at temperatures up to 275°F (135°C)
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