Dallas-based Crosstex Energy companies Crosstex Energy LP and Crosstex Energy Inc. have announced that Crosstex Energy Inc. will invest about $25 million in a third natural gas compression and condensate stabilization plant in the Ohio River Valley.

Dow Chemical Co. let an engineering, procurement, and construction (EPC) contract to Fluor Corp. for a propane dehydrogenation unit, an ethane cracker, and associated power, utilities, and infrastructure upgrades at its Oyster Creek complex in Freeport, Tex.

Enbridge Energy Partners LP, Houston, will build a 150-MMcfd cryogenic natural gas processing plant near Beckville in Panola County, Tex., the company has announced, estimating the cost of the project at $140 million.

Crosstex Processing Services LLC, a unit of Crosstex Energy LP, Dallas, has awarded a contract to UOP LLC, Des Plaines, Ill., for technology and equipment to extract petrochemical feedstocks from NGLs derived from shale gas.

Williams Partners LP, Tulsa, and Royal Dutch Shell PLC have joined to form Three Rivers Midstream, a company to provide gas gathering and gas processing for production in northwest Pennsylvania. The venture will invest in both wet-gas handling infrastructure and dry-gas infrastructure serving Marcellus and Utica shale wells.

TexStar Midstream Services LP, San Antonio, will install two fractionation units in Corpus Christi, Tex., adjacent LyondellBasell’s Equistar Chemicals LP olefins plant.

Oneok Partners LP has completed three projects that are part of its previously announced growth program through 2015.

Crude oil has been removed from a barge that was under tow when it collided Mar. 12 with a liquefied petroleum gas pipeline near Bayou Perot 30 miles south of New Orleans, the US Coast Guard said.

Sibur and TNK-BP of Russia have extended gas-supply agreements and expanded the framework of cooperation within OOO Yugragazpererabotka, a gas-processing joint venture they formed in 2007.

Enterprise Products Partners LP (EPP) has started operations at its expanded Houston Ship Channel LPG export terminal, increasing its ability to load fully refrigereated propane, butane, and isobutene onto ocean-going vessels.