In the first 11 days of October, the differentials of other major Mediterranean crude grades – CPC Blend, Saharan and Libya's own Es Sider blends also weakened, FGE Energy analyst Sofia Pribludnaja said.
"Looking ahead, these Mediterranean grades will face more downside pressure from the second-largest field feeding the CPC Blend – Kashagan – returning from full shutdown due to maintenance after November 10," she added.