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Steady-State Relative Permeability Measurements of Tight and Shale Rocks Considering Capillary End Effect
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Steady-State Relative Permeability Measurements of Tight and Shale Rocks Considering Capillary End Effect
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Journal Article
Steady-State Relative Permeability Measurements of Tight and Shale Rocks Considering Capillary End Effect
2019
Overview
Relative permeability (
k
r
) data are the key factors for describing the behaviour of the multi-phase flow in porous media. During the
k
r
measurements of low-permeability rocks, high capillary pressure can cause a significant liquid hold-up at the core outlet. This liquid hold-up, which is known as capillary end effect (CEE), is the main difficulty for laboratory measurements of relative permeability (
k
r
) for tight and shale rocks. In this paper, a novel method is proposed to correct the CEE during the steady-state relative permeability (SS-
k
r
) measurements. The integrity of the proposed method is evaluated by a set of artificially generated data and the experimental SS-
k
r
data of an Eagle Ford shale sample. It is shown that accurate
k
r
data can be obtained using the proposed technique. This technique can be used to estimate reliable
k
r
data without any saturation profile measurement equipment, such as CT scan or MRI.
Publisher
Springer Netherlands,Springer Nature B.V
