NEW YORK (Standard&Poor's) Feb. 24, 2011--Standard&Poor's Ratings Services said today that there is no effect on the ratings on midstream energy company Enterprise Products Partners L.P. (EPD; BBB-/Positive/--) following its announcement to acquire Duncan Energy Partners L.P. (DEP; not rated). EPD will fund the transaction, which further simplifies its corporate and operating structure, with equity, and DEP is already consolidated on EPD's financial statements. EPD will acquire all of DEP's outstanding publicly-held units through a unit-for-unit exchange. EPD currently owns about 58% of DEP's limited partnership units and a 0.7% general partnership interest.