Pore-scale visualization and quantitative analysis of the spontaneous imbibition based on experiments and micro-CT technology in low-permeability mixed-wettability rock

Qiang Liu; Rui Song; Jianjun Liu; Yun Lei; Xingyu Zhu

doi:10.1002/ese3.636

Pore-scale visualization and quantitative analysis of the spontaneous imbibition based on experiments and micro-CT technology in low-permeability mixed-wettability rock

Qiang Liu, Rui Song, Jianjun Liu, Yun Lei, Xingyu Zhu

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

The pore-scale imbibition mechanism in fractured water-wetted reservoirs has been acknowledged as an efficient tool to enhance oil recovery. Most rock in a natural reservoir is mixed-wetted, but most studies on the pore-scale imbibition process only focused on the water-wetted rock. This paper adopts two mixed-wetted core samples for microspontaneous imbibition experiment, micro-CT scanning, and nuclear magnetic resonance (NMR) test. The results indicate that the pore radius distribution of the segmented CT images is consistent with that of the NMR test. The microimbibition recovery ratio of core No. 34-1 and core No. 64 in the spontaneous imbibition experiment are 27.7% and 58.2%, which agrees well with that computed by the micro-CT scanning image (27.63% and 56.09%). Based on the segmented images, the influences of the Jamin's effect, pore size distribution, and wettability on the microspontaneous imbibition are visualized and quantitatively studied. The Jamin's effect is the important factor that hinders the microimbibition process. The main pore size of imbibition distributes in the range of 1-25 μm. Furthermore, the pore-scale spontaneous imbibition process in a single pore with mixed wettability is investigated and analyzed. The relationships among the contact angle, capillary force, recovery ratio, wettability, and the microimbibition recovery are revealed.

Original language	English (US)
Journal	Energy Science & Engineering
DOIs	https://doi.org/10.1002/ese3.636
State	Published - Jan 29 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: We greatly appreciate the financial support of the National Natural Science Foundation of China [Grant No. 51909225]; National Science and Technology Major Project of China [Grant No. 2017ZX05013001-002]; and the Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences [Grant No. Z017009]. The authors also acknowledge financial support from China Scholarship Council.

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https://repository.kaust.edu.sa/bitstream/10754/661384/1/ese3.636.pdf

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@article{65aeaec4de14409594357386dbf3bf81,

title = "Pore-scale visualization and quantitative analysis of the spontaneous imbibition based on experiments and micro-CT technology in low-permeability mixed-wettability rock",

abstract = "The pore-scale imbibition mechanism in fractured water-wetted reservoirs has been acknowledged as an efficient tool to enhance oil recovery. Most rock in a natural reservoir is mixed-wetted, but most studies on the pore-scale imbibition process only focused on the water-wetted rock. This paper adopts two mixed-wetted core samples for microspontaneous imbibition experiment, micro-CT scanning, and nuclear magnetic resonance (NMR) test. The results indicate that the pore radius distribution of the segmented CT images is consistent with that of the NMR test. The microimbibition recovery ratio of core No. 34-1 and core No. 64 in the spontaneous imbibition experiment are 27.7% and 58.2%, which agrees well with that computed by the micro-CT scanning image (27.63% and 56.09%). Based on the segmented images, the influences of the Jamin's effect, pore size distribution, and wettability on the microspontaneous imbibition are visualized and quantitatively studied. The Jamin's effect is the important factor that hinders the microimbibition process. The main pore size of imbibition distributes in the range of 1-25 μm. Furthermore, the pore-scale spontaneous imbibition process in a single pore with mixed wettability is investigated and analyzed. The relationships among the contact angle, capillary force, recovery ratio, wettability, and the microimbibition recovery are revealed.",

author = "Qiang Liu and Rui Song and Jianjun Liu and Yun Lei and Xingyu Zhu",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: We greatly appreciate the financial support of the National Natural Science Foundation of China [Grant No. 51909225]; National Science and Technology Major Project of China [Grant No. 2017ZX05013001-002]; and the Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences [Grant No. Z017009]. The authors also acknowledge financial support from China Scholarship Council.",

year = "2020",

month = jan,

day = "29",

doi = "10.1002/ese3.636",

language = "English (US)",

journal = "Energy Science & Engineering",

issn = "2050-0505",

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T1 - Pore-scale visualization and quantitative analysis of the spontaneous imbibition based on experiments and micro-CT technology in low-permeability mixed-wettability rock

AU - Liu, Qiang

AU - Song, Rui

AU - Liu, Jianjun

AU - Lei, Yun

AU - Zhu, Xingyu

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: We greatly appreciate the financial support of the National Natural Science Foundation of China [Grant No. 51909225]; National Science and Technology Major Project of China [Grant No. 2017ZX05013001-002]; and the Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences [Grant No. Z017009]. The authors also acknowledge financial support from China Scholarship Council.

PY - 2020/1/29

Y1 - 2020/1/29

N2 - The pore-scale imbibition mechanism in fractured water-wetted reservoirs has been acknowledged as an efficient tool to enhance oil recovery. Most rock in a natural reservoir is mixed-wetted, but most studies on the pore-scale imbibition process only focused on the water-wetted rock. This paper adopts two mixed-wetted core samples for microspontaneous imbibition experiment, micro-CT scanning, and nuclear magnetic resonance (NMR) test. The results indicate that the pore radius distribution of the segmented CT images is consistent with that of the NMR test. The microimbibition recovery ratio of core No. 34-1 and core No. 64 in the spontaneous imbibition experiment are 27.7% and 58.2%, which agrees well with that computed by the micro-CT scanning image (27.63% and 56.09%). Based on the segmented images, the influences of the Jamin's effect, pore size distribution, and wettability on the microspontaneous imbibition are visualized and quantitatively studied. The Jamin's effect is the important factor that hinders the microimbibition process. The main pore size of imbibition distributes in the range of 1-25 μm. Furthermore, the pore-scale spontaneous imbibition process in a single pore with mixed wettability is investigated and analyzed. The relationships among the contact angle, capillary force, recovery ratio, wettability, and the microimbibition recovery are revealed.

AB - The pore-scale imbibition mechanism in fractured water-wetted reservoirs has been acknowledged as an efficient tool to enhance oil recovery. Most rock in a natural reservoir is mixed-wetted, but most studies on the pore-scale imbibition process only focused on the water-wetted rock. This paper adopts two mixed-wetted core samples for microspontaneous imbibition experiment, micro-CT scanning, and nuclear magnetic resonance (NMR) test. The results indicate that the pore radius distribution of the segmented CT images is consistent with that of the NMR test. The microimbibition recovery ratio of core No. 34-1 and core No. 64 in the spontaneous imbibition experiment are 27.7% and 58.2%, which agrees well with that computed by the micro-CT scanning image (27.63% and 56.09%). Based on the segmented images, the influences of the Jamin's effect, pore size distribution, and wettability on the microspontaneous imbibition are visualized and quantitatively studied. The Jamin's effect is the important factor that hinders the microimbibition process. The main pore size of imbibition distributes in the range of 1-25 μm. Furthermore, the pore-scale spontaneous imbibition process in a single pore with mixed wettability is investigated and analyzed. The relationships among the contact angle, capillary force, recovery ratio, wettability, and the microimbibition recovery are revealed.

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UR - http://www.scopus.com/inward/record.url?scp=85078761788&partnerID=8YFLogxK

U2 - 10.1002/ese3.636

DO - 10.1002/ese3.636

M3 - Article

SN - 2050-0505

JO - Energy Science & Engineering

JF - Energy Science & Engineering

ER -

Pore-scale visualization and quantitative analysis of the spontaneous imbibition based on experiments and micro-CT technology in low-permeability mixed-wettability rock

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