Further expanding its base of liquids-rich assets, Petrohawk Energy Corp., Houston, (NYSE: HK) announced its entry into a new core operating region with the addition of 325,000 net acres in the Permian Basin for a collective cost of approximately $455 million."The addition of the Permian Basin completes our vision of a well-crafted asset base where we can leverage our operational expertise with a balanced portfolio of oil and gas opportunities," says Petrohawk chairman and chief executive Floyd Wilson. "In addition to product diversification to maximize revenues, we encounter these powerful...