Home Journals Articles Updates About
CN
image
收藏切换
Interaction Pattern of Dense Sandstone with CO2 and Water
收藏切换
PDF
Yu-long ZHANG1, Lei-ting SHI2, Lin LAN1, Bao-feng PAN1, Tian-ci ZOU1, Yan-liang ZHANG3, Xiao WANG2
Science Technology and Engineering | 2025, 25(3) : 1028 - 1038
Less
收藏切换
Science Technology and Engineering | 2025, 25(3): 1028-1038
• Papers·Petroleum and Natural Gas Industry •
Interaction Pattern of Dense Sandstone with CO2 and Water
Full
Yu-long ZHANG1, Lei-ting SHI2, Lin LAN1, Bao-feng PAN1, Tian-ci ZOU1, Yan-liang ZHANG3, Xiao WANG2
Affiliations
  • 1. Engineering Technology Research Institute of Sinopec Southwest Oil and Gas Branch, Deyang 618000, China
  • 2. State Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering, Chengdu 610500, China
  • 3. Engineering Supervision Department of Changqing Oilfield Branch, Xi’an 710018, China
Published: 2025-01-28 doi: 10.12404/j.issn.1671-1815.2309106
Outline
收藏切换

Based on the reservoir conditions of tight conglomerate reservoirs in the Mahu area of the Junggar Basin, an experiment was conducted to study the interaction between tight conglomerates, CO2, and water. The results indicate that after CO2 dissolves in water to form carbonic acid, it primarily reacts chemically with feldspar and calcite in the cement between the conglomerate grains. This leads to significant around-grain dissolution, with dissolution being the main process and precipitation being secondary. Ultimately, this increases the porosity and permeability of the rock, enhancing the reservoir fluid seepage capacity. The maximum increases in porosity and permeability are 3.65% and 87.36%, respectively. Additionally, the surface roughness of the rock increases after the interaction, with hydrophilic mineral quartz exposed on the surface. The water-phase wetting contact angle of the rock decreases by 7.4°, enhancing hydrophilicity. The CO2 huff and puff process has a positive effect on improving oil recovery, with the main oil-increasing mechanisms being the enlargement of pore space to enhance fluid seepage capacity and the improvement of rock water-phase wettability, which increases reservoir water-phase imbibition capacity and crude oil mobility, thereby improving oil recovery.

dense sandstone  /  CO2  /  interaction  /  permeability  /  enhanced recovery
Yu-long ZHANG, Lei-ting SHI, Lin LAN, Bao-feng PAN, Tian-ci ZOU, Yan-liang ZHANG, Xiao WANG. Interaction Pattern of Dense Sandstone with CO2 and Water[J]. Science Technology and Engineering, 2025 , 25 (3) : 1028 -1038 . DOI: 10.12404/j.issn.1671-1815.2309106
Appendix
Less
Year 2025 volume 25 Issue 3
PDF
227
102
Cite this Article
BibTeX
Article Info
doi: 10.12404/j.issn.1671-1815.2309106
  • Receive Date：2023-11-20
  • Online Date：2025-12-07
  • Published：2025-01-28
Article Data
Affiliations
History
  • Received：2023-11-20
  • Revised：2024-06-24
Funding
Affiliations
    1. Engineering Technology Research Institute of Sinopec Southwest Oil and Gas Branch, Deyang 618000, China
    2. State Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering, Chengdu 610500, China
    3. Engineering Supervision Department of Changqing Oilfield Branch, Xi’an 710018, China
References
Share
https://castjournals.cast.org.cn/joweb/kxjsygc/EN/10.12404/j.issn.1671-1815.2309106
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House