Back to Search Start Over

Characterizing the Microscopic Anisotropic Permeabilities of Tight Oil Reservoirs Impacted by Heterogeneous Minerals

Authors :
Ziqiang Wang
Hongkui Ge
Yun Wei
Yi Wang
Kerui Jia
Ning Xu
Yuankai Zhang
Shuheng Du
Source :
Energies, Vol 15, Iss 18, p 6552 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

This study aimed to reveal the anisotropic permeabilities of tight oil reservoirs impacted by heterogeneous minerals. SEM imaging, image processing, fractal calculation, microscopic reservoir modeling, and visual flow simulation were carried out to investigate the above problems. Results show that the variation coefficient of two-dimensional permeability for the studied tight reservoir samples ranges from 0.09 to 0.95, with an average value of 0.68. The penetration coefficient ranges from 1.16 to 2.64, with an average value of 2.13. The ratio of maximum to minimum permeability is between 1.25 and 7.67, with an average value of 5.62. The fluid flow in tight reservoirs has significant anisotropy comprising dominant flow through conductive channels. Flow in tight oil reservoirs tends to involve minor hydraulic fracturing with no proppant.

Details

Language :
English
ISSN :
19961073
Volume :
15
Issue :
18
Database :
Directory of Open Access Journals
Journal :
Energies
Publication Type :
Academic Journal
Accession number :
edsdoj.84a8f5237b3d4f34aa127ba458a3db8b
Document Type :
article
Full Text :
https://doi.org/10.3390/en15186552