Abstract

The failure and leakage of the oilfield natural gas pipeline may lead to many serious sequences, such as the severe casualties and property losses. This paper analyzes the characteristics of the leakage of natural gas pipeline and the subsequent explosion accident of vapor cloud, adopts the TNT equivalent method to calculate the results of vapor cloud explosion of certain natural gas pipeline in Daqing Oilfield, and gets the relationship between the area of harm zone and leakage time as well as the harm radius corresponding to the different leakage time and area of discharge opening. In addition, it discusses the calculation results and gives the suggestions to reduce the loss resulting from the pipeline disaster.

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