Special Report: Aluminum phosphate cements help with deep, high-temperature wells

05/15/2006
Arun S. Wagh, Ramkumar Natarajan, Richard L. McDaniel - Energy Technology Division, Argonne National Laboratory, Argonne, Ill.Drilling Market Focus, which normally appears in the third issue of the month, was published last week.Aluminum phosphate cements perform better than traditional Portland cement and Ceramicrete cements at well temperatures greater than 250º F. (121.1º C.).Cementing high temperature and high-pressure wells is difficult with Portland cement because its strength decreases at temperatures above 230º F., accompanied by an increase in its permeability. In addition, rigorous control is required to add weighting agents to increase the cement slurries.This ar...
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