West Texas intermediate (WTI) last week dropped by $2.85 per barrel, closing at $43.03. Brent fell by $2.24 to $45.77 and dubai crude average $41 per barrel. Thaioil forecast that WTI this week will move within the range of $41 and $46, while Brent will trade between $43 and $48. Prices should be supported by a weakening US dollar, but higher US invention could limit any gains. Among the factors expected to influence trade this week: