This paper describes the application of high strength quenched and tempered steel in semi-submersibledrillingplatform.
阐述了超高强度的淬火回火钢（调制钢）在深海半潜式钻井平台中的应用。
2
Semi-submersibledrillingplatform is key equipment for deep water exploitation and dual derrick RIGS has been main platform of 6th semi-submersibledrillingplatform.
半潜式钻井平台是深海石油勘探开发的关键设备，而双井架钻机已逐渐成为第六代深水半潜式平台的主流配置。
3
Semi-submersibleplatform, drilling ship and other floating drilling devices are mostly used to drill in the deep-sea oil development.