Insalaco, Enzo1, Catherine Javaux1,
Christian Fraisse1, Claude Legorjus1, Ole-Petter Hansen1, Emmanuel Derbez1,
Mohammad Kamali2, Ali Moallemi2 (1) Total S.A,
The Dalan/Kangan Formation is a major
Good fine-scale reservoir characterization is needed in all field optimization projects – and this starts at the appraisal phase of field evaluations, and not just in mature field scenarios. This necessitates an “anticipation” of the kind of field optimization issues that will be eventually needed. It is also important to think of geological reservoir characterization in dynamic terms at the earliest stage possible, but this must always be underpinned by a strong geological framework. This is achieved by calibration of various dynamic data with the geological understanding, particularly the sedimentological and diagenetic reservoir characterization.
The static reservoir model in Dalan/Kangan reservoirs is highly dependent on the precise type of sedimentary facies, the stratigraphic context and the type of diagenetic overprint, since these control the fine-scale heterogeneity. However, the dynamic reservoir heterogeneity is particularly sensitive to the diagenetic overprint, and it is seen that the fine scale permeability modeling and 3D permeability architecture is highly diagenetically influenced and fundamental to understanding the dynamic behavior of the field. Moreover the understanding of the 3D permeability architecture is important for the application of stimulation techniques, such as acidification.