Forum Oilfield Technologies Inc., a Houston-based maker of drilling and flow control products for oil and natural gas drilling and production applications, has withdrawn registration for a $345 million IPO, citing “market conditions.” It had planned to trade on the NYSE, with Credit Suisse and JPMorgan serving as co-lead underwriters. SCF Partners helped form the company in 2005, and holds a majority ownership position. www.forumoilfield.com