Table 6 EDX test of rock specimens before and after treatment with crude oil

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.%)

Br (w.%)

Si (w.%)

Fe (w.%)

Mg (w.%)

S (w.%)

Calcite rock before aging

52.45

30.96

12.99

1.41

1.19

1.01

–

–

Calcite rock aged with oil

1.72

11.23

83.45

–

0.25

–

–

3.36

Dolomite rock before aging

46.55

33.59

7.41

–

0.39

2.37

9.69

–

Dolomite rock aged with oil

31.13

11.79

49.18

–

–

–

7.09

0.81

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