The Use of a Plume Modelling Study to Reduce the Risk of H2S Release in an Exploration Well to As Low As Reasonably Practicable (ALARP)

With the increasing likelihood of exploration wells being located near population centres, a blueprint for the<br>evaluation of the risk of an uncontrolled release of gas reaching such a settlement needs to be quantified. This<br>paper reviews a case study from Oman in which a plume (gas cloud) modelling study was completed to determine<br>the level of H2S away from an exploration well. Future wells drilled in Oman and other countries can use this work<br>as a model for reference with which to compare and to assess whether further detailed risk analysis is required.