Natural gas liquids (NGLs) producers had a great year in 2011. Even as economics for dry gas were eroding as supplies exceeded demand and prices headed below $3/MMBtu, NGLs prices were correlated to oil prices and continued to go up. Producers shifted to newly discovered "wet" or "liqui rich" shale plays, boosting the supplies of ethane, props and other NGLs to the point that petrochemicals manuf turers committed to reopening old plants and constructs new ethane crackers to produce ethylene, a basic pet chemical building block.
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