Simulation of offshore shallow gas blowout combustion scenarios
During offshore oil and gas drilling and production,it is easy to cause a blowout when drilling shallow oil and gas reservoirs.The fire accident caused by combustible gas leakage in the blowout poses a serious threat to offshore platforms and oil recovery devices.Based on computational fluid dynamics(CFD)and finite element analysis method,this paper constructed a blowout combustion scenario via thermal-fluid-solid coupling method and diffusion principle,and predicted the development law of flame in the combustion process of offshore platform after blowout,with the thermodynamic response of the wellhead device at high temperature obtained.The results show that with the spread of combustible gas from the blowout,the high temperature area continues to expand,and the flame and thermal radiation have a significant impact on the service status of adjacent wellhead devices.Wind speed and blowout speed are the main factors behind the flame extension and the thermodynamic response of the wellhead device.The thermal-fluid-solid coupling model and analysis method used in this paper can be applied to the safety assessment of offshore platform in blowout-related accidents.
万方数据
维普
