Willbros Awarded Canadian Pipeline Construction Project

Houston, TX (Marketwire) - Willbros Group, Inc. (NYSE: WG) announced today that its Canadian unit, Willbros Canada, has executed a contract to perform construction of "Spread C" for Pembina Pipeline Corporation's Nipisi & Mitsue Pipeline Projects. In addition to the recent Pembina award for construction of six (6) pump stations, Willbros will also construct approximately 90 km of dual 20 inch and 8 inch pipeline near Slave Lake, Alberta. Construction is scheduled to begin in December and the pipeline is expected to be in service in mid-2011. The two pipelines will expand Pembina's operating system in the vicinity of Whitecourt, Swan Hills, Slave Lake and north to the existing Nipisi Terminal.

Randy Harl, President and Chief Executive Officer, commented, "We are pleased to have another opportunity to work for Pembina in support of their heavy oil pipeline transportation capacity expansion efforts. We have seen marked improvement in the Canadian hydrocarbon market and we look forward to delivering superior quality and value to Pembina."

Willbros Group, Inc. is an independent contractor serving the oil, gas, power, refining and petrochemical industries, providing engineering, construction, turnaround, maintenance, life cycle extension services and facilities development and operations services to industry and government entities worldwide. For more information on Willbros, please visit our web site at www.willbros.com.

This announcement contains forward-looking statements. All statements, other than statements of historical facts, which address activities, events or developments the Company expects or anticipates will or may occur in the future, are forward-looking statements. A number of risks and uncertainties could cause actual results to differ materially from these statements, including the potential for additional investigations; disruptions to the global credit markets; global economic downturn; fines and penalties by government agencies; new legislation or regulations detrimental to the economic operation of refining capacity in the United States; the identification of one or more other issues that require restatement of one or more prior period financial statements; contract and billing disputes; the integration and operation of InfrastruX; the possible losses arising from the discontinuation of operations and the sale of the Nigeria assets; the existence of material weaknesses in internal controls over financial reporting; availability of quality management; availability and terms of capital; changes in, or the failure to comply with, government regulations; ability to remain in compliance with, or obtain waivers under, the Company's loan agreements and indentures; the promulgation, application, and interpretation of environmental laws and regulations; future E&P capital expenditures; oil, gas, gas liquids, and power prices and demand; the amount and location of planned pipelines; poor refinery crack spreads; delay of planned refinery outages and upgrades; the effective tax rate of the different countries where the Company performs work; development trends of the oil, gas, power, refining and petrochemical industries and changes in the political and economic environment of the countries in which the Company has operations; as well as other risk factors described from time to time in the Company's documents and reports filed with the SEC. The Company assumes no obligation to update publicly such forward-looking statements, whether as a result of new information, future events or otherwise.

SOURCE: Willbros Group, Inc.