scholarly journals Application of the combination of high-pressure mercury injection and nuclear magnetic resonance to the classification and evaluation of tight sandstone reservoirs: A case study of the Linxing Block in the Ordos Basin

2020 ◽  
Vol 7 (5) ◽  
pp. 433-442
Author(s):  
Xingxing Kong ◽  
Dianshi Xiao ◽  
Shu Jiang ◽  
Shuangfang Lu ◽  
Bin Sun ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
High Pressure ◽  
Magnetic Resonance ◽  
Ordos Basin ◽  
Tight Sandstone ◽  
Mercury Injection ◽  
The Ordos Basin ◽  
Sandstone Reservoirs ◽  
Nuclear Magnetic

scholarly journals Multifractal characteristics of shale and tight sandstone pore structures with nitrogen adsorption and nuclear magnetic resonance

2020 ◽  
Vol 17 (5) ◽  
pp. 1209-1220
Author(s):  
Fu-Yong Wang ◽  
Kun Yang ◽  
Yun Zai
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Specific Surface ◽  
Pore Size ◽  
Ordos Basin ◽  
Tight Sandstone ◽  
Pore Structures ◽  
Pore Size Distributions ◽  
Multifractal Spectra ◽  
Nuclear Magnetic

Abstract Based on the experiments of nitrogen gas adsorption (N2GA) and nuclear magnetic resonance (NMR), the multifractal characteristics of pore structures in shale and tight sandstone from the Chang 7 member of Triassic Yanchang Formation in Ordos Basin, NW China, are investigated. The multifractal spectra obtained from N2GA and NMR are analyzed with pore throat structure parameters. The results show that the pore size distributions obtained from N2GA and NMR are different, and the obtained multifractal characteristics vary from each other. The specific surface and total pore volume obtained by N2GA experiment have correlations with multifractal characteristics. For the core samples with the similar specific surface, the value of the deviation of multifractal spectra Rd increases with the increase in the proportion of large pores. When the proportion of macropores is small, the Rd value will increase with the increase in specific surface. The multifractal characteristics of pore structures are influenced by specific surface area, average pore size and adsorption volume measured from N2GA experiment. The multifractal characteristic parameters of tight sandstone measured from NMR spectra are larger than those of shale, which may be caused by the differences in pore size distribution and porosity of shale and tight sandstone.

Study of the Imbibition Behavior of Hydrophilic Tight Sandstone Reservoirs Based on Nuclear Magnetic Resonance

2018 ◽  
Vol 32 (7) ◽  
pp. 7762-7772 ◽  
Author(s):  
Xiaoxia Ren ◽  
Aifen Li ◽  
Guijuan Wang ◽  
Bingqing He ◽  
Shuaishi Fu
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Tight Sandstone ◽  
Sandstone Reservoirs ◽  
Nuclear Magnetic

Comparative study of models for predicting permeability from nuclear magnetic resonance (NMR) logs in two Chinese tight sandstone reservoirs

2013 ◽  
Vol 62 (1) ◽  
pp. 116-141 ◽  
Author(s):  
Liang Xiao ◽  
Xiao-Peng Liu ◽  
Chang-Chun Zou ◽  
Xiao-Xin Hu ◽  
Zhi-Qiang Mao ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Comparative Study ◽  
Tight Sandstone ◽  
Sandstone Reservoirs ◽  
Nuclear Magnetic
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