Phillips 66 (PSX) and Marathon Petroleum Corp.'s (MPC) reported fourth-quarter earnings above analyst estimates early Wednesday as the boom in cheap domestic crude oil helped boost production. Phillips 66 said Q4 EPS was $2.06, beating analyst estimates of $1.68. The company processed 135,000 barrels per day of shale crude during the quarter, a 97% increase from 2011 as big oil changed its focus from natgas "fracking" in Appalachia to the shale