Microsilica has two main functions in oilfield cementing. The first is its hydraulic sealing function in the wellbore, and the second is its supplementary function, including leakage, crack repair, and sealing of depleted areas. The addition of microsilica enables the full potential of the oil well to be fully utilized. In addition to the blocking effect of preventing gas leakage in oil wells, the addition of microsilica has the following advantages:
1. Improve liquidity and make it more convenient and effective to use.
2. Greatly reduces permeability and better controls gas leakage.
3. Increase durability and compressive strength.
4. Lightweight.
