Table 2 Physicochemical properties of the Ilam crude oil (Ilam field) used in this study.

From: Interfacial-active green surfactants from sugarcane bagasse and its biochar for enhanced oil recovery

Property

Value

Method/standard

API gravity

23.4

ASTM D70

Asphaltene content (%)

5.7

IP 143

Resin content (%)

18.0

SARA analysis

Saturates (%)

45.1

SARA analysis

Aromatics (%)

31.2

SARA analysis

Viscosity @ 25 °C (cP)

42.5

ASTM D445

Density @ 25 °C (g/cm3)

0.912

ASTM D4052

Total Acid Number (TAN, mg KOH/g)

0.35

ASTM D664

Baseline IFT vs. water (mN/m)

30.1

Pendant drop

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