Implications of Cementing on Well Performance. Zonal Isolation. Cement-to-Pipe Bond and Hydraulic Fracturing. Chemistry and Characterization of Portland Cement. Chemical Notation. Manufacturing of Portland Cement. Hydration of the Clinker Phases. Hydration of Portland Cements - The Multicomponent System. Classification of Portland Cements. Cement Additives and Mechanisms of Action. Variability of Additive Response. Accelerators. Retarders. Extenders. Weighting Agents. Dispersants. Fluid-Loss Control Agents. Lost Circulation Prevention Agents. Miscellaneous Cement Additives. Rheology of Well Cement Slurries. Some Rheological Principles. Equipment and Experimental Procedures. Data Analysis and Rheological Models. Time-Dependent Rheological Behavior of Cement Slurries. Flow Behavior of Cement Slurries in the Wellbore Environment. Mud Removal. Displacement Efficiency. Well Preparation. Mud Displacement. Spacers and Washes. Cement Mixing. Cement/Formation Interactions. Fluid Loss - Introduction. Dynamic Fluid Loss. Cementitious Drilling Fluids. Prevention of Annular Gas Migration. Practical Consequences of Gas Migration. Physical Process of Gas Migration. Gas Migration Testing. Gas Migration Solutions. Gas Migration Prediction. Thermal Cements. High-Temperature Chemistry of Portland Cement. Class J Cement. Silica-Lime Systems. High-Alumina Cement. Deep Oil and Gas Wells. Geothermal Well Cementing. Thermal Recovery Wells. Cementing Equipment and Casing Hardware. Cementing Materials. Basic Equipment. Cementing Units. Introduction to Casing Hardware. Casing Hardware. Remedial Cementing Tools. Cement Job Design. Problem Analysis. Slurry Selection. Placement Mechanics. Well Security and Control. Computer Simulators. Example of Job Design Procedure. Preparing for the Job. Primary Cementing Techniques.