Experimental Research on the Influence of Supercritical CO2 Flooding on
Reservoir Physical Property

doi:10. 3863/j. issn. 1674 – 5086. 2013. 05. 013

Abstract

Abstract:

The influence of injected gas on reservoir physical property was studied after reservoir rocks being flooded by
N2，CO2，and supercritical CO2. The mineral composition and microstructure of the reservoir rocks were also investigated
by applying X-ray diffractometer（XRD）and scanning electron microscopy（SEM）. The results show that the injected CO2
can corrode the mineral compositions，make porosity and permeability increase. Supercritical CO2 will change the physical
property of the reservoir at the initial stage of the injection because of its rapid dissolution and fast diffusion. However，clay
minerals could plug rock pores，which result in the deterioration of the permeability. Calcite and feldspar could be corroded by
CO2 which was detectable by XRD，and the microstructure of the reservoir rocks were observed by SEM before and after the
corrosion. The corroded rocks became loose and had many secondary pores with better connectivity.

Key words: supercritical CO2, corrosion, reservoir physical property, scanning electron microscopy（SEM）, X-ray diffraction

Zhang Chao, Li Zhaomin, Zhang Dong. Experimental Research on the Influence of Supercritical CO2 Flooding on
Reservoir Physical Property[J]. 西南石油大学学报(自然科学版), DOI: 10. 3863/j. issn. 1674 – 5086. 2013. 05. 013.

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References

[1] 沈平平，廖新维. CO2 地质埋存于提高石油采收率技

术[M]. 北京：石油工业出版社，2009.

[2] 秦积舜，李爱芬. 油层物理学[M]. 东营：中国石油大学

出版社，2006.

[3] 李士伦，郭平，王仲林，等. 中低渗透油藏注气提高采

收率理论及应用[M]. 北京：石油工业出版社，2007.

[4] 俞军，王伟男，耿昕，等. 淡水驱替过程中岩石电

性实验研究[J]. 大庆石油地质与开发，2008，27（6）：

140–142.

Yu Jun，Wang Weinan，Geng Xin，et al. Experimental

study on rock electricity in the course of fresh water flooding[

J]．Petroleum Geology & Oilfield Development in

Daqing，2008，27（6）：140–142.

[5] Oldendurg C M，Stevens S H，Benson S M. Economic

feasibility of carbon sequestration with enhanced gas recovery[

J]. Energy，2004，29（9–10）：1413–1422.

[6] Sylvester M. Carbon capture and sequestration in China[

J]. J Earth SCI，2008，2（3）：86–89.

[7] White C M，Smith D H，Jones K L. Sequestration of carbon

dioxide in coal with enhanced coalbed methane recovery[

J]. Energy Fuels，2005，19（3）：659–724.

[8] Bertier P，Swennen R，Laenen B. Experimental identification

of CO2 water rock interactions caused by sequestration

of CO2 in Westphalian and Buntsan dstein sandstones

of the Campine Basin（NE–Belgium）[J]. Journal of Geochemical

Exploration，2006，89（123）：10–14.

[9] Kharaka Y K，Cole D R，Thordsen J J. Gas–water–rock

interactions in sedimentary basins：CO2 sequestration in

the Frio Formation，Texas，USA [J]. Journal of Geochemical

Exploration，2006，89（1–3）：183–186.

[10] 谷丽冰，李冶平，侯秀林. CO2 驱引起储层物性改变的

实验室研究[J]. 石油天然气学报（江汉石油学院学报），

2007，29（3）：258–260.

Gu Libing，Li Zhiping，Hou Xinlin. Experimental research

of reservoir physical changes Induced by CO2

flooding[J]. Journal of Oil and Gas Technology，2007，

29（3）：258–260.

[11] 赵仁保，孙海涛，吴亚生，等. CO2 埋存对地层岩石影

响的室内研究[J]. 中国科学：技术科学，2010，40（4）：

378–384.

Zhao Renbao，Sun Haitao，Wu Yasheng，et al. Influence

of CO2 corrosion on rock structure and its mechanical

characteristics[J]. Science China Press，2010，40（4）：

378–384.

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