Effect of Individual Components on Slurry Behavior

Alumina-based slurries behave similarly. A small increase in the aluminum hydroxide content will reduce the pumping time significantly. 

In general, the same compositions used for onshore wells also work for the offshore wells. Saline water retards the setting rate, and longer pumping time is available for the same CBS formulation in offshore wells compared with onshore wells. In addition, because the saline water contains dissolved solids, one needs to add more water in the slurry to obtain the same low initial Be. Results of the pumping time versus temperature are shown in Table 15.6 for formulations that are similar to those given in Table 15.5. 

Wagh et al. [9] tested their Ceramicrete formulation for offshore wells by using simulated seawater. The composition of this water is given in Table 15.5, and the results are presented in Table 15.6. 

Chapter 15 Chemically Bonded Phosphate Ceramic Borehole Sealant 

The ANL and BNL studies show that CBS has excellent potential in borehole applications. Except for the ThermaLock formulations, however, CBSs have not been field-tested. Nonetheless, because these cements were tested according to API procedures and have shown excellent results, one may conclude that they are more than likely to succeed in these applications. 

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