Tetra Technologies Inc., The Woodlands, Texas, (NYSE: TTI) plans to form a master limited partnership (MLP) for the majority of the assets of its subsidiary Compressco Inc. and plans to file an initial public offering of units for the MLP. Compressco provides oilfield production enhancement services with its GasJack wellhead compression unit in the U.S., Canada and Mexico. The IPO could occur between late 2007 and early 2008.