Table 8 EDX test of rock specimens after treatment with SiO2 and Fe3O4 nanoparticles

From: Toward mechanistic understanding of wettability alteration in carbonate rocks in the presence of nanoparticles, gelatin biopolymer, and core-shell nanocomposite of Fe3O4@gelatin

EDX Analysis

O (w.%)

Ca (w.%)

C (w.%)

Si (w.%)

Mg (w.%)

S (w.%)

Cl (w.%)

Fe (w.%)

Calcite rock before aging

1.72

11.23

83.45

0.25

–

3.36

–

–

Calcite rock aged by SiO2 nanofluid

16.71

0.66

64.30

17.20

–

1.13

–

–

Dolomite rock before aging

31.13

11.79

49.18

–

7.09

0.81

–

–

Dolomite rock aged by SiO2 nanofluid

15.32

–

68.35

15.17

–

1.17

–

–

Calcite rock aged by Fe3O4 nanofluid

6.09

2.04

54.03

0.33

–

1.81

3.52

32.18

Dolomite rock aged by Fe3O4 nanofluid

16.07

–

50.06

–

–

1.53

–

32.35

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