Leakage and Explosion Simulation Analysis of Injection Production Pipeline of Gas Storage Based on PHAST

doi:10.11885/j.issn.1674-5086.2021.08.13.03

Abstract

Abstract: In order to improve the safety in operation of injection, production and gathering pipeline in underground gas storage, aiming at the problem of casualties caused by pipeline leakage explosion, based on the field production characteristics of the gas storage operation area, the main influencing factors of pipeline leakage and explosion accident were analyzed using Fault Tree Method. In addition, simulated by PHAST software, the effect of injection production pipeline operating pressure and pipeline transmission medium on the consequences of leakage and explosion accident was quantitatively analyzed, and risk assessment of the accident was carried out. It showed that under the selected simulation parameters, the hazard range of pipeline accidents increases with the increase of pipeline operating pressure, and the high-risk areas formed by gas cloud diffusion and explosion shock waves are both small. The leakage of gas flow pipeline with wet gas transmission mode will cause various fire accidents such as jet fire and pool fire. The risk assessment curve intuitively showed the harm caused by the injection, production and gathering pipeline of the gas storage to the enterprise personnel around the well station, buildings and ground operators of the gas storage. The research conclusions of this paper can provide a reference basis for the construction of emergency plan system and the improvement of disposal capacity in the operation area of gas storage.

Key words: safety in emergency response, injection production pipeline, FTA, PHAST, leakage, simulation analysis

CLC Number:

TE88

CHEN Lei, ZHANG Zhe, ZHANG Xinpeng, LIU Qian, CHEN Guifang. Leakage and Explosion Simulation Analysis of Injection Production Pipeline of Gas Storage Based on PHAST[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2023, 45(3): 131-142.

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