HYDRIL

Pressure control equipment, namely, blowout preventers; oil field pressure control equipment, namely, automatic pressure control valves; pressure control equipment, namely, electric accumulators; well tools, namely, electric accumulators; downloadable software for monitoring, operating, and controlling blowout preventers (BOP) in the oil and gas production industry; electronic pressure control equipment for drilling, namely, ram blowout preventers and annular blowout preventers