半潜式钻井平台系统VRML仿真关键技术研究

Key Technology Research of VRML Simulation about Semi-submersible Drilling Platform

为深入研究半潜式钻井平台结构和功能,建立其仿真系统具有重要意义。按照实际比例建立了钻井平台、钻机井架、绞车、天车、顶驱、游车等的零件及其装配体三维模型,并装配出钻井平台系统模型。在此基础上,研究了半潜式平台系统仿真技术中虚拟现实下VRML文件优化,采用了预优化处理、基于面片数的优化、基于节点复用的优化、基于数据精度的优化以及基于文件压缩的优化等不同的优化技术,设计出半潜式深水钻井平台系统VRML虚拟仿真模型以及系统完整总体结构。

In order to do further research about the structure and function of the semi-submersible drilling platform,the establishment of its simulation system has very important practical signifi- cance. According to the actual geometry, the parts and the assembly 3D model were established in- eluding the drilling platform, derrick, winch, crown block, top drive, traveling block. The drilling platform system model is assembled, too. Base on these, the VRML file optimization of the semi- submersible platform system simulation technology in the virtual reality was studied. The differ- ent optimization techniques were adopted, including the preliminary optimization, the optimization based on the patch number, the optimization of node reuse, the optimization based on data accura- cy and based on the file compression. The VRML virtual simulation modeling of the semi-sub- mersible drilling platform and the complete general structure of the system were provided.