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Suppression of Gas Well Blowout Fire Using Water Sprays; Large and Small Scale Studies.


pdf icon Suppression of Gas Well Blowout Fire Using Water Sprays; Large and Small Scale Studies. (1538 K)
Pfenning, D.; Evans, D. D.

NIST SP 995; Volume 2; March 2003.

American Petroleum Institute, Committee on Fire and Safety Protection, Production Session, Hyatt Regency, September 11-13, 1984, San Antonio, TX, 1-29 pp, 1984.

Keywords:

fire suppression; blowout fires; large scale fire tests; small scale fire tests; well fires

Abstract:

Large scale simulation tests were conducted to demonstrate the effectiveness of water spray systems to control and extinguish gas well blowout fires. Selected results from small scale experiments performed in this research program are given primarily to help explain the development of the water spray extinguishment method, but also to examine scaling of important phenomena. Two techniques of water spray injection, internal and external to the initial gas jet, were tested at large scale on fires with heat release rates from 144 megawatts (138 SCFS methane flow) to 222 megawatts (212 SCFS methane flow). Using external water injection from four nozzles surrounding the gas jet, fires of almost 200 megawatt size could be extinguished with a mass flow ration (water/gas) of 2.17 (129 GPM water flow) and continued to burn at a ratio of 1.56 (86 GPM water flow). This technique of water injection could be the basis of a practical blowout fire suppression system.