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Title: Probing nanopore structure and confined fluid behavior in shale matrix: A review on small-angle neutron scattering studies

Abstract

Although continued growth in unconventional oil and gas production is generally projected, its long-term growth potential and sustainability have significant uncertainties. A critical problem is the low hydrocarbon recovery rates from shale and other tight formations using the horizontal well drilling and hydraulic fracturing techniques: < 10% for tight oil and ~ 20% for shale gas. Moreover, the production rate for a given well typically declines rapidly within one year. The low recoveries and declining production of shale oil and gas reservoirs are apparently related to the small porosity (a few to a few hundred nm) and low permeability (10 –16–10 –20 m 2) of shale matrix, which make the enclosed hydrocarbon fluids difficult to access. Furthermore, to enhance the hydrocarbon recovery from shale matrix, it is essential to study its nanopore structure and confined fluid behavior.

Authors:
ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Earth and Environmental Sciences Div.
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE), Oil and Natural Gas (FE-30)
OSTI Identifier:
1573995
Alternate Identifier(s):
OSTI ID: 1575318
Report Number(s):
LA-UR-18-26067
Journal ID: ISSN 0166-5162
Grant/Contract Number:  
89233218CNA000001; FE-406/408/409
Resource Type:
Accepted Manuscript
Journal Name:
International Journal of Coal Geology
Additional Journal Information:
Journal Name: International Journal of Coal Geology; Journal ID: ISSN 0166-5162
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
Earth Sciences; Shale; Nanopore; Fluid; Small-angle neutron scattering

Citation Formats

Xu, Hongwu. Probing nanopore structure and confined fluid behavior in shale matrix: A review on small-angle neutron scattering studies. United States: N. p., 2019. Web. doi:10.1016/j.coal.2019.103325.
Xu, Hongwu. Probing nanopore structure and confined fluid behavior in shale matrix: A review on small-angle neutron scattering studies. United States. doi:10.1016/j.coal.2019.103325.
Xu, Hongwu. Thu . "Probing nanopore structure and confined fluid behavior in shale matrix: A review on small-angle neutron scattering studies". United States. doi:10.1016/j.coal.2019.103325.
@article{osti_1573995,
title = {Probing nanopore structure and confined fluid behavior in shale matrix: A review on small-angle neutron scattering studies},
author = {Xu, Hongwu},
abstractNote = {Although continued growth in unconventional oil and gas production is generally projected, its long-term growth potential and sustainability have significant uncertainties. A critical problem is the low hydrocarbon recovery rates from shale and other tight formations using the horizontal well drilling and hydraulic fracturing techniques: < 10% for tight oil and ~ 20% for shale gas. Moreover, the production rate for a given well typically declines rapidly within one year. The low recoveries and declining production of shale oil and gas reservoirs are apparently related to the small porosity (a few to a few hundred nm) and low permeability (10–16–10–20 m2) of shale matrix, which make the enclosed hydrocarbon fluids difficult to access. Furthermore, to enhance the hydrocarbon recovery from shale matrix, it is essential to study its nanopore structure and confined fluid behavior.},
doi = {10.1016/j.coal.2019.103325},
journal = {International Journal of Coal Geology},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {10}
}

Journal Article:
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This content will become publicly available on October 31, 2020
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