In this section
Our research includes exploring fundamental pore scale fluid dynamics, developing digital rocks analysis techniques, increasing the accuracy of field scale reservoir simulation, and evaluating the feasibility of scaling up CO2 storage to climate relevant scales.
@article{Wenck:2021:10.1002/essoar.10506366.1,
author = {Wenck, N and Jackson, SJ and Muggeridge, AH and Krevor, S},
doi = {10.1002/essoar.10506366.1},
title = {Characterisation and Modelling of Heterogeneous Sandstone and Carbonate Rocks},
url = {http://dx.doi.org/10.1002/essoar.10506366.1},
year = {2021}
}
TY - JOUR
AB - <jats:p>The characterisation of multiphase flow properties is essential forpredicting large-scale fluid behaviour in the subsurface. Insufficientrepresentation of small-scale heterogeneities has been identified as amajor gap in conventional reservoir simulation workflows. Capillaryheterogeneity has an important impact on small-scale flow and is one ofthe leading causes of anisotropy and flow rate dependency in relativepermeability. We evaluate the workflow developed by Jackson et al.(2018) for use on rocks with complex heterogeneities. The workflowcharacterises capillary heterogeneity at the millimetre scale. Themethod is a numerical history match of a coreflood experiment with the3D saturation distribution as a matching target and the capillarypressure characteristics as a fitting parameter. Coreflood experimentaldatasets of five rock cores with distinct heterogeneities were analysed:two sandstones and three carbonates. The sandstones exhibit laminarheterogeneities. The carbonates have isotropic heterogeneities at arange of length scales. We found that the success of the workflow isprimarily governed by the extent to which heterogeneous structures areresolved in the X-ray imagery. The performance of the characterisationworkflow systematically improved with increasing characteristic lengthscales of heterogeneities. Using the validated models, we investigatedthe flow rate dependency of the upscaled relative permeability. Thefindings showed that the isotropic heterogeneity in the carbonatesamples resulted in non-monotonic behaviour; initially the relativepermeability increased, and then subsequently decreased with increasingflow rate. The work underscores the importance of capturing small-scaleheterogeneities in characterising subsurface fluid flows, as well as thechallenges in doing so.</jats:p>
AU - Wenck,N
AU - Jackson,SJ
AU - Muggeridge,AH
AU - Krevor,S
DO - 10.1002/essoar.10506366.1
PY - 2021///
TI - Characterisation and Modelling of Heterogeneous Sandstone and Carbonate Rocks
UR - http://dx.doi.org/10.1002/essoar.10506366.1
UR - https://doi.org/10.1002/essoar.10506366.1
ER -