Fluor diversified its business more extensively in 1967, when five companies were merged into a division called Coral Drilling and it started a deep-water oil exploration business in Houston called Deep Oil Technology. It also created Fluor Ocean Services in Houston in 1968 and acquired an interest in other fossil fuel operations in the 1970s. Fluor acquired a construction company, Pike Corp. of America and the engineering division of its prior partner in Australia, Utah Construction. In 1972, Fluor bought land in Irvine, California and started building its new headquarters on it. The following year, the company's oil and gas operations were consolidated under a new entity, Fluor Oil and Gas Corp.