A potentially huge fine looms as the BP oil-spill trial enters a new phase.

The offshore-drilling giant Transocean is tied in with BP in the public imagination because of its involvement in the Deepwater Horizon catastrophe.

Halliburton and BP work together in the oil fields, despite disagreements over fault in the BP oil spill.

Fidelity: Records numbers are raiding their 401(K)s American Airlines hit with record fine Transocean: BP's hiding info about the Gulf spill. BP…