Abstract
AbstractPorosity is the most common form of reservoirs, and its size, shape, and connectivity directly affect the capacity of oil and gas storage and production. To study the micro–nano-pore structure characteristics of shale oil reservoirs and quantitatively characterize its heterogeneity, this work uses high-precision high-pressure mercury intrusion (HPMI) experimental techniques to study the micro–nano-pore structure characteristics of shale oil, and based on the experimental data, fractal theory is used to quantitatively characterize its heterogeneity. The results of the study show that the micro–nano-pores in the shale oil reservoir are concentrated and continuous, and the pore radius is mainly distributed among the range of 30–500 nm, nanoscale pores are an important part of the pores of the shale oil reservoir. The fractal dimension of the shale oil reservoir is larger than the fractal dimension of typical tight oil reservoirs, indicating that the heterogeneity of shale oil reservoir is stronger. The research results have some theoretical and practical significance for the production of inter-salt shale oil reservoirs.
Funder
National Science and Technology Major Project
National Science and Technology Major Project “Key Technologies for Effective Development of Low Permeability-Ultra-low Permeability Reservoirs”
National Science and Technology Major Demonstration Project
Publisher
Springer Science and Business Media LLC
Subject
General Energy,Geotechnical Engineering and Engineering Geology
Reference46 articles.
1. Bai B, Zhu R, Wu S, Yang W, Jeff G, Allen G, Zhang X, Su L (2013) Multi-scale method of nano (micro)-CT study on microscopic pore structure of tight sandstone of Yanchang Formation, Ordos Basin. Pet Explor Dev 40(03):329–333
2. Butcher AR, Lemmens HJ (2011) Advanced SEM technology clarifies nanoscale properties of gas accumulations in shales. Am Oil Gas Rep 54(11):118–124
3. Chen S, Zhao W (2010) Characterization of inter-salt argillaceous dolomite reservoirs in Qianjiang Depression, Jianghan Basin. J Yangtze Univ Nat Sci Edn 7(1):168–170
4. Chen T, Yang Z, Ding Y, Luo Y, Qi D, Lin W, Zhao X (2018) Waterflooding huff-n-puff in tight oil cores using online nuclear magnetic resonance. Energies 11(6):1524. https://doi.org/10.3390/en11061524
5. Clarkson CR, Solano N, Bustin RM, Bustin AMM, Chalmers GRL, He L et al (2013) Pore structure characterization of North American shale gas reservoirs using USANS/SANS, gas adsorption, and mercury intrusion. Fuel 103:606–616. https://doi.org/10.1016/j.fuel.2012.06.119
Cited by
25 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献