GSTDTAP  > 地球科学
DOI10.1306/04151918083
Nuclear magnetic resonance and x-ray microtomography pore-scale analysis of oil recovery in mixed-porosity carbonates
King, Hubert1; Sansone, Michael1; Dunsmuir, John1; Callen, Nicole1; Kortunov, Pavel1; Xu, Ye1; Buono, Antonio2; Gao, Bo2; Kralik, James3
2020-01-15
发表期刊AAPG BULLETIN
ISSN0149-1423
EISSN1558-9153
出版年2020
卷号104期号:1页码:37-52
文章类型Article
语种英语
国家USA
英文摘要

With the recognition that carbonate reservoir rocks commonly contain a significant microporosity component (pore sizes similar to 1 mu m), there has been an ongoing effort to understand how this affects hydrocarbon recovery. This work reports x-ray microtomography (XMT) and nuclear magnetic resonance (NMR) data on two characteristic rock types. One is micropore dominated, and the other exhibits mixed-pore sizes. Several new techniques are introduced to accommodate investigation of full-sized core-plug samples having preserved wettability and to perform such studies with native fluids. First, the uses of high-field NMR techniques are demonstrated to determine porosity, overall oil and water content, and how these fluids are distributed between micro- and macropores. It is found that microporosity values agree with those obtained by optical (total pore system) analysis. Second, the use of xenon gas to tag the native oil phase for XMT imaging is demonstrated, showing how this helps determine contributions from pores that are smaller than the instrument resolution. Finally, a new method that uses NMR measurements of oil and water saturations to constrain the image analysis is demonstrated. The analysis shows the extent to which oil recovery occurs from the different pore systems. In both rock types, oil in the macroporosity is preferentially swept. Nevertheless, in agreement with a recent theory, oil recovery from the microporosity is significant. For the 70% microporosity sample, approximately one-third of the total oil recovery comes from the micropores, a factor that agrees well with theory.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000507457800003
WOS关键词RELATIVE PERMEABILITY ; NETWORK MODELS ; MICROCRYSTALS ; TOMOGRAPHY ; SCHEME ; FLOW
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/248755
专题地球科学
作者单位1.ExxonMobil Corp Strateg Res, Annandale, NJ 08801 USA;
2.ExxonMobil Upstream Res Co, Annandale, NJ USA;
3.ExxonMobil, ExxonMobil Upstream Res Co, Annandale, NJ USA
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King, Hubert,Sansone, Michael,Dunsmuir, John,et al. Nuclear magnetic resonance and x-ray microtomography pore-scale analysis of oil recovery in mixed-porosity carbonates[J]. AAPG BULLETIN,2020,104(1):37-52.
APA King, Hubert.,Sansone, Michael.,Dunsmuir, John.,Callen, Nicole.,Kortunov, Pavel.,...&Kralik, James.(2020).Nuclear magnetic resonance and x-ray microtomography pore-scale analysis of oil recovery in mixed-porosity carbonates.AAPG BULLETIN,104(1),37-52.
MLA King, Hubert,et al."Nuclear magnetic resonance and x-ray microtomography pore-scale analysis of oil recovery in mixed-porosity carbonates".AAPG BULLETIN 104.1(2020):37-52.
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