Chemical interaction of Hollow Glass Microspheres with oilwell cement slurries

CHRISTIAN M. MARTÍN; NADIA B. SCARPONI; YURY A. VILLAGRÁN; DIEGO MANZANAL; PIQUÉ TERESA MARIA

Paris

Simposio; 13th fib International PhD Symposium in Civil Engineering; 2021

fib

Usually, for oil field applications, when a light-weight cement slurry is needed, a density reduction isobtained by increasing the water to cement ratio (w/c), which also implies a compressive strengthreduction. To avoid the compressive strength decrease, hollow glass microspheres (HGMS) have beenwidely used in this industry. Many researchers have been done focusing mainly on the mechanicalproperties of cement slurries with HGMS. In this study an analysis of the chemical interactionbetween HGMS and cement slurries is presented and, since HGMS are mainly composed ofamorphous SiO 2 , its pozzolanic activity is assessed.