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Quicksilver Resources Inc. has executed an agreement with the U.S. exploration arm of Royal Dutch Shell plc to establish an area of mutual interest (AMI) covering more than 850,000 acres of the Sand Wash Basin in northwestern Colorado.

Making the most of America’s recently realized and growing natural gas endowment dictates the use of gas for more than the traditional commercial and industrial applications. Many people are working to promote liquefied natural gas (LNG) as an alternative to fuels such as diesel and propane. One of them is Peter Tumminello, AGL Resources Co. executive vice president of wholesale services.

Supporters of President Obama are twice as likely to want stringent regulation on hydraulic fracturing (fracking) than Mitt Romney backers, according to a Bloomberg National Poll released Thursday.

Tulsa, OK-based Unit Corp. said Friday its petroleum subsidiary has closed a previously announced sale of a little more than one-third of its interest in Bakken Shale properties to QEP Energy for $228 million. The deal was final as of July 1, 2012.

Telvent, a Canadian firm whose software systems and services are used to remotely manage more than half of the oil and gas pipelines in North America and Latin America, Wednesday confirmed a security breach involving the project files of some of its customers.

Test well results and micro-seismic analysis have identified more than 200 drilling locations in the Mondak in the Upper Bakken Shale, according to initial drilling results released Thursday by Calgary, Alberta-based PetroShale.

Rex Energy Corp., which expanded its operations in Ohio’s Utica Shale earlier this year, said Wednesday it was pleased with the initial production results from its first Ohio Utica Shale well.

WBI Energy Transmission Inc. is seeking FERC authorization to expand the northern portion of its natural gas pipeline system to meet increased demand in western North Dakota.

Sidewinder Drilling Inc., a privately held upstart that’s been in the unconventional drilling game for a little more than a year, on Tuesday said it had a $242 million definitive offer on the table for Fort Worth, TX-based Union Drilling Inc., which operates across the U.S. onshore.