Wood Group's growth in US onshore shale work

A round-up of Wood Group's growth in US onshore shale work Approximately 2,500 employees supporting contracts in US shale fields HOUSTON, September 4, 2013- Wood Group's activities to support oil & gasproduction from shale fields in the US are growing, with annualized revenuetotaling approximately $500 million. This growth supports our outlook for 2013shale activities and is being driven primarily by two of Wood Group'sbusinesses. Together, Wood Group Mustang and Wood Group PSN have around 2,500personnel providing engineering, operations & maintenance services to US shalefields. Wood Group Mustang has supported more than 110 shale projects. Its firstproject in what is now a major shale play was a 1995 process study thatexamined ways to improve the efficiency and operation of a natural gas liquidsplant in the North Dakota section of the Bakken shale play. Wood Group Mustangnow has around 600 employees supporting shale projects, which include: gathering pipelines, compressor stations, pump stations, measuring facilitiesand other midstream facilities in a number of the US shale plays; multi-well pad designs in the Eagle Ford, Marcellus, Utica and Bakken shales; front-end engineering design (FEED) and detailed design for a 250 millionstandard cubic feet/day cryogenic turbo-expander gas plant in the Bakken; greenfield and brownfield engineering services for a gas plant expansionprogram; and automating a chemical injection system for wells in the Eagle Ford. Wood Group Mustang's shale-related work is performed at four locations in theUS; and in Calgary, Canada; and Bogota, Colombia. Wood Group PSN, specialists in brownfield production services, increased itspresence in the US shale markets in 2012 with the acquisitions of Duval andMitchell's, in the Eagle Ford and Bakken shale regions, respectively.Delivering operations & maintenance, construction, training & developmentprograms, and consulting services, Wood Group PSN now employs 1,900 peopleacross the US shale market. "Shale production is significantly changing the global energy market," statedBob Keiller, CEO of Wood Group. "Wood Group has the knowledge and experience tosupport our customers as they increase their focus on shale regions worldwide." -ends- Notes to Editors Wood Group is an international energy services company with around $7bn sales,employing about 43,000 people worldwide and operating in 50 countries. TheGroup has three businesses - Wood Group Engineering, Wood Group PSN and WoodGroup GTS - providing a range of engineering, production support, maintenancemanagement and industrial gas turbine overhaul and repair services to the oil &gas, and power generation industries worldwide. www.woodgroup.com Wood Group Mustang is a global project management, engineering, procurement,and construction operations company serving the upstream oil and gas, refiningand chemicals, pipeline, automation and control, and industrial markets. It hasoffices in the United States, Latin America, Canada, United Kingdom, Malaysia,West Africa and the Middle East. For more information, visit www.mustangeng.com. Wood Group PSN is a global provider of pre-operations, hook up & commissioning,operations & maintenance, engineering, construction, project management,training and decommissioning services to the energy industry. Employing over29,000 people in more than 40 countries, Wood Group PSN offers high integrity,brownfield services that support customers to optimise performance, maintainproduction, reduce operating costs and provide integrity assurance.www.woodgroup-psn.com. For further information contact Media enquiries Carolyn Smith, Corporate Communications - Eastern Hemisphere, Wood GroupTel: +44 (0) 1224 851099, email: [email protected] Bobbie Ireland, Corporate Communications - Americas, Wood Group Tel: +1 (281) 828 3505, email: [email protected] Investor and analyst enquiries Nick Gilman, Head of Investor Relations & Corporate Communications, Wood Group Tel: +44 (0) 1224 851404, email: [email protected] Andrew Rose, Investor Relations Manager, Wood Group

Tel: +44 1224 532716, email: [email protected]