Jeff Callander, born American but dual nationality British, is a founding shareholder and director of IESL. Although born in the USA, he grew up in Latin America and only returned to the USA for university where he obtained a BSc in Mechanical Engineering. Jeff began his career with Schlumberger working in the Amazon, North Sea and West Africa as well as Schlumberger's manufacturing and research facilities in France. Following Schlumberger, Jeff completed an MBA at the London Business School and subsequently took over a division of Abbott Laboratories in the UK. He then returned to the oil industry to set up IESL with Juan Tovar as both shared a vision of potential improvements that could be offered to the industry of better engineering and innovative thought.

Juan Tovar, born in Venezuela, is a founding member and director of IESL. A mechanical engineer he worked for Schlumberger Dowell in Libya, UAE, Algeria, Norway and the UK in operations, technical and management positions for 10 years. While at Schlumberger, he returned to University in Edinburgh to get an M.Sc. in Petroleum Engineering from Heriot-Watt working on sand production and associated completion problems. Spent two years in Italy where he was R & D and technical services manager for Italog, a subsidiary of the Geoservices group. In 1993 he returned to the UK to found IESL and implement ideas for technologies. Juan has continued to build IESL with a number of patents that today form the core portfolio of IESL technologies.

Porfirio Guerrero, born in Venezuela, educated in Canada at Dawson College - Montreal, P.Q., in Pure and Applied Science and at Queen’s University – Kingston. Ont. in Metallurgical Engineering. He has over 20 years experience in business development predominantly in the oilfield manufacturing industry. Responsible for expanding market share in Latin America, Porfirio is the latest addition to the IESL team.

IES Globa,,l in partnership with AWT, cover a wide choice of services and expertise.

The network's purpose is to "Communicate successful methods and gaps of managing sand in the North Sea to allow the continued development and operation of offshore fields". The network is open to all who would add value and benefit from membership to such a network. IES Global is a strong supporter of the network.

The national oil company of Venezuela with which IESl Global has a long history as a provider of expertise.

The Society of Petroleum Engineers is a rich source of information and we have participated with them over many years contributing to their papers and actvities.