Chemical interaction of Hollow Glass Microspheres with oilwell cement slurries

CHRISTIAN MARCELO MARTIN; NADIA BELÉN SCARPONI; YURY ANDRÉS VILLAGRÁN ZACCARDI; DIEGO GUILLERMO MANZANAL; TERESA M. PIQUE

París

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

Fédération Internationale du Béton

Usually, for oil field applications, when a light-weight cement slurry is needed, a density reduction is obtained by increasing the water to cement ratio (w/c), which also implies a compressive strength reduction. To avoid the compressive strength decrease, hollow glass microspheres (HGMS) have been widely used in this industry. Many researchers have been done focusing mainly on the mechanical properties of cement slurries with HGMS. In this study an analysis of the chemical interaction between HGMS and cement slurries is presented and, since HGMS are mainly composed of amorphous SiO2, its pozzolanic activity is assessed.