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Abstract

In this paper, a geological and reservoir engineering approach aimed to analyse and model fractures in subsurface-fractured reservoirs is proposed using the complete geological and reservoir engineering record of well data such as cores, borehole images, wireline logs and well tests. This methodology is applied to an exploratory vertical well drilled in the hinge zone of a large asymmetric anticline fold, in the central part of the Kuyumba oil field in Eastern Siberia, Russia. Here, the reservoir succession is mainly made up of fractured tight dolomites of Precambrian age, with apparently no matrix contribution. As a result of this analysis using well data, a 3D Discrete Fracture Model (DFN) was set up around the studied well. Using this both statistical and deterministic approach, the vertical lithological variation at the well(s) and the interrelationships between fracturing at well scale, petrophysical heterogeneity and reservoir deformation can be quantified, thus allowing to build a well constrained and more realistic DFN. This latter has been used to assess the hydraulic properties of fractures, which will serve in future as input to simulate the flow conditions during different production operations.

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/content/papers/10.3997/2214-4609.20146833
2008-04-07
2020-03-28
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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.20146833
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