Industry growth in the United States finds drillers moving into deeper and hotter frontiers in search of oil and gas. Remediation of failed cement jobs in deep hot wells costs the industry more than $100 million each year. While additives and well designed placement techniques can increase chances for achieving long-term zonal isolation in high-pressure, high-temperature (HPHT) wells, a high incidence of gas pressure on deep hot wells because of inadequate placement and mechanical failure of cements, continues to be reported.