U.S. oil prices pushed higher Tuesday as traders bet that the opening of a new pipeline would begin to drain crude stockpiles at a key storage hub, while another cold spell is expected to further tighten heating-oil supplies. Meanwhile, Brent futures fell to a three-month low as traders worried weak economic data could weigh on global crude demand. Light, sweet crude for March delivery climbed 76 cents, or 0.8%, to $97.19 a barrel on the New York Mercantile Exchange. Nymex crude rebounded from a 1.1% loss in Monday’s session and rose for the first time in three trading days. […]