There are 8 general categories of additives. Accelerators – Reduces setting time and increases the rate of compressive strength build up. Retarders – Extends the Setting time. Extenders – Lowers the density. Weighting Agents – Increases density. Dispersants – Reduces viscosity. Fluid Loss Control Agents. Lost Circulation Control Agents. Specialty Agents. Accelerators Can be … Continue reading Cementing Additives and Mechanisms
Tag: Cementing
Why Cement (a wellbore)?
The reasons are as follows; To support the vertical and radial loads applied to the casing Isolate porous formations from the producing zone formations Exclude unwanted sub-surface fluids from the producing interval Protect casing from corrosion Resist chemical deterioration of cement Confine abnormal pore pressure Cement is introduced into the well by means of a … Continue reading Why Cement (a wellbore)?