• Oil & Gas Industry Additives for Cementing

Silica Fume

• Silica Fume is a highly effective additive in oilwell cementing applications because of its ability to improve the cement’s stability and pressure resistance strength. This is due to the addition of ultra-fine particles and organic admixtures that work together to create a high-strength cement that can withstand harsh conditions in oil wells.

  Silica Fume is a pozzolanic material composed of excellent, amorphous spheres produced as a by-product in the manufacture of silicon metals. When Silica Fume is added to a cement slurry, it reacts with the calcium hydroxide produced during the hydration process to create an additional calcium silicate hydrate (C-S-H) gel. This gel is the main binder in cement, contributing significantly to the final product’s strength and durability.

  One of the key advantages of using Silica Fume as an additive in oilwell cementing is that it can significantly increase the compressive strength of the cement. This is particularly important in manufacturing high-strength concrete, where the compressive strength after 28 days is greater than 80 MPa. The addition of Silica Fume can improve the compressive strength of the cement by up to 30%, making it an ideal additive for oilwell cementing applications where high-pressure resistance is required.