Buaprommart, K;
Mahgerefteh, H;
Martynov, S;
Striolo, A;
(2019)
Shale gas well blowout fire and explosion modelling.
Applied Thermal Engineering
, 149
pp. 1061-1068.
10.1016/j.applthermaleng.2018.12.105.
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Abstract
The development and application of a computational model for predicting the thermal radiation and explosion over-pressure in the event of an accidental well blowout during shale gas production is described. The transient discharge rate, the fluid phase composition, temperature and pressure at the ruptured wellhead, serving as the source term for fire and explosion modelling are determined based on the numerical solution of the conservation equations using the Method of Characteristics. Two scenarios covering immediate and delayed ignition of the escaping gas respectively leading to a jet fire or an explosion are considered. The efficacy of the well blowout model is demonstrated by simulating the accidental well-head rupture of a real 4000 m deep shale gas production well at a maximum reservoir pressure of 600 bar. The simulated time variant explosion overpressures and thermal radiation heat fluxes are in turn employed to specify the minimum safe distances to people and equipment during the rapid well depressurisation.
| Type: | Article |
|---|---|
| Title: | Shale gas well blowout fire and explosion modelling |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.applthermaleng.2018.12.105 |
| Publisher version: | https://doi.org/10.1016/j.applthermaleng.2018.12.1... |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | thermal radiation, well blowout, shale gas production, multiphase CFD modelling |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10066108 |
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