In the engineering practice there is a lot of fracture phenomenon in the petroleum and chemical industry equipment. Fracture mechanics of linear elasticity fracture theory was involved. Through the analysis of the work principle of quick opening blind, simplify the structure into axisymmetric model, establish simplified model in the finite element software ANSYS, mainly through, mesh the region with the regular geometry by reflection method and the region the with the irregular geometry by free meshing method, press uniform load. The analysis results show that the tip of the crack exist singularity.

Water film lubricated transport of super heavy oil is one of the energy-saving technologies in the energy sector. The major difficulty of transporting super heavy oil is its very high viscosity, which leads to need vast energy consumption and increase the cost of transportation.The water film lubricated transport of super heavy oil seems to be one of the promising means to handle the situation. In this technique, low-viscosity liquid is formed into an annular film between the pipe wall and oil flow, because the oil does not come in contact with the wall and decreases resistance, the energy consumption and its cost decreases drastically. CFD software was used to do the numerical simulation base on experiments of water film lubricated transport in Teshi pipeline of Liao He oilfield.The simulation result is compared with experimental data which has been very good anastomosis. Therefore the study provides a guidance to the actual operation.