Rapid evaluation of the impact of heterogeneity on miscible gas injection
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To predict and manage petroleum production there are two challenges: first, to generate and utilize tremendous detail in our reservoir description and second, to recognize that the majority of this detail is uncertain. Techniques, therefore, are needed to assess uncertainty while making predictions of oil, water, and gas production. We demonstrate that by using a mixture of old and new techniques (streamlines and fine grid simulation) we obtain the speed of the first while retaining the rigour and accuracy of the second. The method is applied to the rapid evaluation of the impact of reservoir heterogeneity on miscible gas injection. 1995 The Geological Society.