The current and anticipated proliferar tion of natural-gas shale plays has prompted Standard & Poor's Corp. to take negative actions on three single-asset pipeline companies. "The increasing prominence of shale gas is primarily driving the changing supply fundamentals. These various un-conventional-natural-gas resource basins have become more abundant, and producers have shifted their drilling activities away from more traditional areas to the generally lower-cost shale plays, such as the Haynesville in northern Louisiana, the Eagle Ford in southern Texas, and the Marcellus in Ap-palachia," the rating agency report said.
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