Special Distribution of Crude Oil in the Lucaogou Formation in Jimusaer Sag and Genetic Analysis of Its Physical Difference

Figure 11

Cross-diagrams of (a) density and (b) viscosity versus ααα-20R C₂₈/C₂₉ sterane ratio and (c) density and (d) viscosity versus ααα-20R C₂₇/C₂₉ sterane ratio, for the crude oil sample in the Lucaogou Formation.

(a)

(b)

(c)

(d)