With crude oil and natural gas prices on the rise again, and winter drilling season underway, oilfield service companies have been attracting renewed interest from investors. Halliburton (HAL) recently returned to the Green Favored Zone of the SIA S&P 500 Index Report for the first time in two months, bouncing back from a drop into the red zone. Yesterday, HAL finished in 78th place, up 16 spots on the day and up 206 positions in the last month.