Excluding

Building midstream infrastructure in the Marcellus Shale to keep up with growing natural gas volumes was a challenge in the first quarter, MarkWest Energy Partners LP CEO Frank Semple said Thursday.

Southwestern Energy Co. is producing about 400 MMcf/d in the Marcellus Shale and doesn’t foresee any constraints in moving natural gas to markets north or south for the next couple of years, executives said Friday.

After drilling some disappointing wells targeting the Hogshooter interval of the Granite Wash in the Texas Panhandle, Linn Energy LLC is now concentrating its efforts on the Oklahoma Hogshooter, where the reservoir is seen to be of better quality with less variability, CEO Mark E. Ellis said Thursday.

Unlike many producers today, Vanguard Natural Resources LLC is not necessarily focused on oil and natural gas liquids (NGL)-rich acquisitions. The company has done recent deals for both liquids and dry gas assets, instead focusing on margin and how the properties fit into its structure, CEO Scott Smith said Monday.

Hess Corp. won’t sell its unconventional assets in the Bakken, Eagle Ford and Utica shale plays, but it is looking at proposals from a hedge fund that wants a larger stake in the company, Hess officials said during a 4Q2012 earnings call on Wednesday.

Forest Oil Corp. has agreed to sell all of its South Texas properties — excluding those in the Eagle Ford Shale — for proceeds of $325 million after tax as part of its ongoing deleveraging plan, the company said Thursday.

Higher rig counts and new infrastructure contributed to record production from the Permian and Anadarko basin operations, Apache Corp. said Thursday.

First quarter results of Cabot Oil & Gas Corp. improved over the year-ago period, thanks mainly to expansion of the company’s production base. Oil and gas production volumes both set company records, although low gas prices weighed on the Houston-based producer.

An analysis of resources in 171 geologic provinces, including Canada and Mexico and several Arctic provinces — but excluding the United States — found that the world holds an estimated 5,606 Tcf of undiscovered, technically recoverable conventional natural gas, according to a new U.S. Geological Survey (USGS) report.