3M™ Glass Bubbles HGS4000 have a density of 0.38 g/cc and an isostatic crush strength of 4,000 psi. The HGS series glass bubbles are designed for low-density drilling fluids and cements used in the oil and gas industry.
Reduce rig time required compared to multiple stage cementing
Reduce the possibility of formation break-down
Reduce the possibility of lost circulation
Increase efficiency of mud removal by allowing pipe rotation or reciprocation