The development of 3-D modeling CAD system on production platforms is mainly discussed in this paper. A suitable petroleum platform design by using software is developed according to the design status of domestic production platforms and the principle of structural life cycle method. The research results have been successfully applied to the 3-D graphic design of production platforms. The design level of offshore platform has been remarkably raised and the design quality has been improved. The technology research on developing method, design analysis method, parameterized modeling method, information management method, version management and etc, and can also be applied to other engineering designs and have certain popularization value.
