There are four main directions of relieving the oil wells mortars:
- increasing water-cement ratio
- aeration of the grouting mortar with air-gas mixtures
- use of weight light additives , 
- chemical reaction and air-entraining of components while cementing.
Finely porous foamed ceramic microspheres of the specified size 0.1 to 0.6 mm with a solid and strong shell are used as a lightweight filler.