Analytical model of fault leakage in compartmentalized reservoirs considering three-directional flow in the fault zone

Document Type

Conference Proceeding

Publication Date

1-1-2019

Abstract

Faults are planar interfaces that intersect the sequential sedimentary layers and may provide a hydraulic connection between the confined layers. Early warning of undesirable fluid leakage into the shallower formations is important in geological storage/disposal operations. Pressure pulses travel fast and carry information that is directly related to the fluid movement through the media. In this study, we provide an analytical model to evaluate the pressure perturbation of fault leakage into a shallower layer. The solution is derived by coupling the fluid flow equations of the two layers as well as the planar interface of the fault. Results show that the solution is useful for interpretation of the pressure variations to identify the anisotropic fluid flow through the fault. The solution can be applied to separately evaluate leakage to the other side of the fault and the above layer as well as the horizontal leakage along the fault plane.

Publication Source (Journal or Book title)

SPE Western Regional Meeting Proceedings

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