Measurement and Visualization of Tight Rock Exposed to CO2 Using NMR Relaxometry and MRI

被引：30

作者：

Wang, Haitao ^{[1
,2
]}

Lun, Zengmin ^{[1
,2
]}

Lv, Chengyuan ^{[1
,2
]}

Lang, Dongjiang ^{[1
,2
]}

Ji, Bingyu ^{[1
,2
]}

Luo, Ming ^{[1
,2
]}

Pan, Weiyi ^{[1
,2
]}

Wang, Rui ^{[1
,2
]}

Gong, Kai ^{[1
,2
]}

机构：

[1] State Key Lab Shale Oil & Gas Enrichment Mech & E, Beijing 100083, Peoples R China

[2] Sinopec, Petr Explorat & Prod Res Inst PEPRIS, Beijing 100083, Peoples R China

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

中国国家自然科学基金;

关键词：

SUPERCRITICAL CO2; POROUS-MEDIA; MECHANISMS;

D O I：

10.1038/srep44354

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Understanding mechanisms of oil mobilization of tight matrix during CO2 injection is crucial for CO2 enhanced oil recovery (EOR) and sequestration engineering design. In this study exposure behavior between CO2 and tight rock of the Ordos Basin has been studied experimentally by using nuclear magnetic resonance transverse relaxation time (NMR T-2) spectrum and magnetic resonance imaging (MRI) under the reservoir pressure and temperature. Quantitative analysis of recovery at the pore scale and visualization of oil mobilization are achieved. Effects of CO2 injection, exposure times and pressure on recovery performance have been investigated. The experimental results indicate that oil in all pores can be gradually mobilized to the surface of rock by CO2 injection. Oil mobilization in tight rock is timeconsuming while oil on the surface of tight rock can be mobilized easily. CO2 injection can effectively mobilize oil in all pores of tight rock, especially big size pores. This understanding of process of matrix exposed to CO2 could support the CO2 EOR in tight reservoirs.

引用

页数：10

共 26 条

[11]

MUNGAN N, 1981, J CAN PETROL TECHNOL, V20, P87

[12]

Pang ZL., 2012, ENG SCI, V14, P60, DOI DOI 10.3969/J.ISSN.1672-7703.2016.03.002

[13]

Ren B, 2011, SPE ENH OIL REC C KU

[14] Performance evaluation and mechanisms study of near-miscible CO2 flooding in a tight oil reservoir of Jilin Oilfield China [J].

Ren, Bo ;

Zhang, Liang ;

Huang, Haidong ;

Ren, Shaoran ;

Chen, Guoli ;

Zhang, Hua .

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING, 2015, 27 :1796-1805

[15] Effect of mineralogy on nuclear magnetic resonance surface relaxivity: A case study of Middle Bakken and Three Forks formations [J].

Saidian, Milad ;

Prasad, Manika .

FUEL, 2015, 161 :197-206

[16]

Shyeh-Yung J.-G. J., 1991, SPE ANN TECHN C EXH, pSPE 22651, DOI [10.2118/22651-MS, DOI 10.2118/22651-MS]

[17] Behavior of supercritical CO2 injected into porous media containing water [J].

Suekane, T ;

Soukawa, S ;

Iwatani, S ;

Tsushima, S ;

Hirai, S .

ENERGY, 2005, 30 (11-12) :2370-2382

[18] Application of MRI in the Measurement of Two-Phase Flow of Supercritical CO2 and Water in Porous Rocks [J].

Suekane, Tetsuya ;

Furukawa, Naoto ;

Tsushima, Shoji ;

Hirai, Shuichiro ;

Kiyota, Masanori .

JOURNAL OF POROUS MEDIA, 2009, 12 (02) :143-154

[19]

Tovar F.D., 2014, SPE UNCONVENTIONAL R, DOI [10.2118/169022-ms, DOI 10.2118/169022-MS, 10.2118/169022-MS]

[20] Scaling miscible displacement in fractured porous media using dimensionless groups [J].

Trivedi, Japan ;

Babadagli, Tayfun .

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, 2008, 61 (2-4) :58-66

← 1 2 3 →