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Here, we provide the data of our publications for free download. You may use them for your own research by kindly citing the corresponding publication.

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Multi-scale reconstruction of vuggy carbonates by pore network modeling and image-based technique

Citation: If you use this package in any publications please help us by citing the following article:

Sadeghnejad, S., & Gostick, J. (2020) Multi-scale reconstruction of vuggy carbonates by pore network modeling and image-based technique. SPE Journal, 25 (1), 253-267.

Model Description:

To reconstruct a bi-modal vuggy porous medium, an algorithm based on coupling the PNM approach with image-based network techniques was implemented. A lattice-based network image (LNI) of a vugular network along with a conventional PNM was used to evaluate the network properties in parallel. LNI is a lattice network that consists of the secondary porosity (i.e., vugs) of the network. The LNI is laid on top of the base PNM (i.e., matrix porosity) which contains the microporous structure of the porous medium. Implementing such a twin LNI-PNM approach has considerable advantages. For example, the connection among the vuggy pores of the LNI with other micro-pores of the PNM can properly and efficiently be calculated (e.g., petrophysical properties of overlapping vugs). Moreover, big networks consisting of many million pores and vugs can be feasibly reproduced by using such a technique. In the first step, the microporous network and vug properties are defined as inputs. The base network (i.e., micro-porous) properties include network size, number of pores, throats, coordination number, the size distribution of pores and throats, etc. The vug properties consist of the total number of vugs in the network and vug diameter distribution. Based on the input data, the base PNM and its twin LNI are generated. The base PNM consists of only conventional micro-pores with a predefined pore size distribution.

For more information read the paper.

The code can be downloaded from here.


Dual-scale pore network reconstruction of vugular carbonates using multi-scale imaging techniques

Citation: If you use this package in any publications please help us by citing the following article:

Moslemipour, A., Sadeghnejad, S. (2021) Dual-Scale Pore Network Reconstruction of Vugular Carbonates using Multi-Scale Imaging Techniques. Advances in Water Resources, 147, January 2021, 103795.

Model Description:

In this study, a dual-scale PNM is implemented to reconstruct the behavior of a vuggy carbonate sample. The rock sample is CT scanned at two different scales. At the macro-scale (i.e., vugular-network), a medical-CT scanner is used to image the rock sample at the resolution of 100 μm. The rock is also imaged by a micro-CT scanner at the resolution of 0.75 μm to extract the micro-scale properties (i.e., micro-network). The networks of both scales are extracted by two network extraction algorithms, and the results compared together. Then, a stochastically equivalent network based on the extracted micro-network properties is generated with a larger field of view (FOV). Then, vugs are randomly added to the reconstructed micro-network based on the properties of the macro-scale CT images. The result is a dual-scale unstructured irregular PNM. This modeling approach can efficiently preserve the vug-to-vug and vug-to-pore connectivity of overlapping vugs.

For more information read the paper.

The code can be downloaded from here.