Nuclear Magnetic Resonance Estimation of Petrophysical Properties and Evaluation of Hydrocarbon Huff-and-Puff Gas Injection in Lower Eagle Ford Shale Oil Samples

2019 ◽  
Author(s):  
Sherifa Cudjoe ◽  
Iman Oraki ◽  
Reza Barati ◽  
Jyun-Syung Tsau ◽  
Chi Zhang ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Gas Injection ◽  
Shale Oil ◽  
Petrophysical Properties ◽  
Eagle Ford Shale ◽  
Eagle Ford ◽  
Nuclear Magnetic

Experimental Research on the Shale Oil Reservoirs by Nuclear Magnetic Resonance (NMR) Technique

2015 ◽  
Vol 89 (s1) ◽  
pp. 132-133 ◽  
Author(s):  
Pengfei ZHANG ◽  
Shuangfang LU ◽  
Junqian LI ◽  
Liujuan XIE ◽  
Jianjun CHEN ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Experimental Research ◽  
Oil Reservoirs ◽  
Shale Oil ◽  
Shale Oil Reservoirs ◽  
Nuclear Magnetic

Petrophysical properties difference of organic-rich and organic-poor shale reservoir using low-field nuclear magnetic resonance experiment in the Sangzhi block, South China

2020 ◽  
Vol 8 (4) ◽  
pp. T895-T905
Author(s):  
Gang Zhao ◽  
Wenlong Ding ◽  
Yaxiong Sun ◽  
Siyu Shi ◽  
Baocheng Jiao ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Shale Gas ◽  
Hunan Province ◽  
Organic Carbon Content ◽  
Petrophysical Properties ◽  
Low Field ◽  
Porosity And Permeability ◽  
Shale Reservoir ◽  
Nuclear Magnetic

The petrophysical properties of rocks have an important influence on shale quality. To characterize the difference of petrophysical properties between organic-rich and organic-poor shale reservoirs, we used the low-field nuclear magnetic resonance (NMR) technique and field emission scanning electron microscopy analysis after argon-ion polishing or natural section to measure porosity and permeability from six core samples from well SY6 in the Sangzhi block, Northwest Hunan province. Some information about pore types, pore structure, residual porosity, movable porosity, and permeability based on the T2 spectrums’ difference of organic-rich and organic-poor shale samples were discussed. The shale sample test results show that the main pores size is mesopore, which provide most of shale gas reservoir space. The continuous peaks demonstrated the pores’ connectivity better than the isolated peaks, and shale gas can migrate freely between these connected pores and fractures. The permeability of all samples calculated by the classic Coates model is extremely low, which is not conducive to the migration of shale gas. We evaluated the dominating factors of NMR porosity and permeability and found that the relationships between NMR porosity and permeability and total organic carbon content, quartz minerals, and clay minerals are not clear, which may be a comprehensive influence. The research results have important guiding significance for shale reservoir quality evaluation in this area.

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