Atlanta-based GE Energy, a division of General Electric Co., Fairfield, Conn., (NYSE: GE) has closed the acquisition of Sondex Plc, Hampshire, U.K., (London: SDX) for US$9.27 per share in a deal valued at US$582 million. Sondex designs, manufactures and sells downhole equipment for optimizing production from mature oil and gas field, including wireline products are used to monitor reservoir, well and production conditions. The company operates in the U.S., the U.K., Venezuela, Canada, Russia, the United Arab Emirates, China, Australia and Malaysia.