Table 2 Comparison of the thermal conductivity increment of cement by different high-thermal conductive materials.

From: Research on enhancing heat transfer in geothermal well cementing via novel expanded graphite and cured epoxy resin composite filler

No and Ref

Thermal conductive materials

Thermal conductivity increment

1

MEG

20.7–182.1%

249

Iron powder

24.7%

Graphite (325 mesh)

15.5%

Silicon carbide

15.0%

Carbon fiber

34.9%

350

10% ScCO2 modified ground-granulated blast furnace slag

23.3%

425

Graphite: alumina: steel slag = 1:2:1

25.3%

Graphite: alumina: steel slag = 1:3:3

41.8%