1887

Abstract

Summary

A large proportion of carbonate reservoirs contain natural open fractures, which have a significant impact reservoir fluid flow and ultimate recovery. In this study, high resolution X-ray computed tomography (µCT) has been used for imaging, interpretation and analysis of open fracture in carbonate in true 3D. The samples are form the Shetland Group in the Gullfaks Field, which has produced oil since late 2012. The µCT data shows that the tensile fractures occur as calcite veins or are partly filled with calcite cement. Fractures tend to be most frequent in low porosity parts of the formation, and bioturbations also have a significant effect on the shape, orientation and occurrence of fractures. The µCT gives the detailed geometry and aperture distribution of the fractures in 3D.

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/content/papers/10.3997/2214-4609.201702377
2017-10-04
2020-04-04
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References

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