March 7, 2014 (Chinavestor) Shale oil companies pulled back after last week's sharp increase. Whiting Petroleum (NYSE:WLL) is still on top of the momentum chart but is not overbought. Current stock price of $70 is well above its trading range and presents some liability going forward. Kodiak Oil & Gas (NYSE:KOG) is less vulnerable at current prices according to the following chart. Continental Resources (NYSE:CLR) is very similar to KOG when it comes to technical analysis.