Effect of Lithology on Pore-Scale Residual Oil Displacement in Chemical Flooding Using Nuclear Magnetic Resonance Experiments

2018 ◽  
Author(s):  
Zheyu Liu ◽  
Hongjie Cheng ◽  
Changfu Xu ◽  
Yukun Chen ◽  
Yihang Chen ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Flooding ◽  
Pore Scale ◽  
Residual Oil ◽  
Oil Displacement ◽  
Nuclear Magnetic

Saturated carbon dioxide nanofluids enhanced oil recovery in carbonate reservoir cores using nuclear magnetic resonance

2021 ◽  
Author(s):  
Yongsheng Tan ◽  
Qi Li ◽  
Liang Xu ◽  
Xiaoyan Zhang ◽  
Tao Yu
Keyword(s):  
Carbon Dioxide ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Carbonate Reservoir ◽  
Carbonate Reservoirs ◽  
Residual Oil ◽  
Core Flooding ◽  
Nuclear Magnetic

<p>The wettability, fingering effect and strong heterogeneity of carbonate reservoirs lead to low oil recovery. However, carbon dioxide (CO<sub>2</sub>) displacement is an effective method to improve oil recovery for carbonate reservoirs. Saturated CO<sub>2</sub> nanofluids combines the advantages of CO<sub>2</sub> and nanofluids, which can change the reservoir wettability and improve the sweep area to achieve the purpose of enhanced oil recovery (EOR), so it is a promising technique in petroleum industry. In this study, comparative experiments of CO<sub>2</sub> flooding and saturated CO<sub>2</sub> nanofluids flooding were carried out in carbonate reservoir cores. The nuclear magnetic resonance (NMR) instrument was used to clarify oil distribution during core flooding processes. For the CO<sub>2</sub> displacement experiment, the results show that viscous fingering and channeling are obvious during CO<sub>2</sub> flooding, the oil is mainly produced from the big pores, and the residual oil is trapped in the small pores. For the saturated CO<sub>2</sub> nanofluids displacement experiment, the results show that saturated CO<sub>2</sub> nanofluids inhibit CO<sub>2</sub> channeling and fingering, the oil is produced from the big pores and small pores, the residual oil is still trapped in the small pores, but the NMR signal intensity of the residual oil is significantly reduced. The final oil recovery of saturated CO<sub>2</sub> nanofluids displacement is higher than that of CO<sub>2</sub> displacement. This study provides a significant reference for EOR in carbonate reservoirs. Meanwhile, it promotes the application of nanofluids in energy exploitation and CO<sub>2</sub> utilization.</p>

scholarly journals Effect of asphaltene precipitation on CO2-flooding performance in low-permeability sandstones: a nuclear magnetic resonance study

RSC Advances ◽  
2017 ◽  
Vol 7 (61) ◽  
pp. 38367-38376 ◽  
Author(s):  
Chen Wang ◽  
Tiantai Li ◽  
Hui Gao ◽  
Jinsheng Zhao ◽  
Huazhou Andy Li
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Damage Mechanism ◽  
Nuclear Magnetic Resonance Study ◽  
Low Permeability ◽  
Co2 Flooding ◽  
Pore Scale ◽  
Asphaltene Precipitation ◽  
Magnetic Resonance Study ◽  
Nuclear Magnetic

With nuclear magnetic resonance (NMR), a novel experimental study is conducted to reveal the pore-scale formation damage mechanism of tight sandstones caused by asphaltene precipitation during CO2 flooding.

scholarly journals Catalytic Oxidation of Heavy Residual Oil by Pulsed Nuclear Magnetic Resonance

Processes ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 158
Author(s):  
Alexey V. Vakhin ◽  
Elena I. Cherkasova ◽  
Aliya G. Safiulina ◽  
Galiya G. Islamova ◽  
Sergey M. Petrov ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Catalytic Oxidation ◽  
Thermodynamic Parameters ◽  
Flow Line ◽  
Oxidation Products ◽  
Residual Oil ◽  
Pulsed Nuclear Magnetic Resonance ◽  
Pulsed Nmr ◽  
Nuclear Magnetic

A study on the catalytic oxidation of heavy residual oil (HRO) was carried out. The thermodynamic parameters of components of HRO oxidation products were studied by pulsed nuclear magnetic resonance (NMR). A method for the quantitative assessment of thermodynamic parameters of HRO components and oxidized bitumen using pulsed NMR is presented. The relationship between NMR parameters and the viscosity of HRO and its oxidation products is established. The obtained results prove the possibility of using pulsed NMR as a flow-line method for rapid analysis of intermediates and products of the heavy residual oil oxidation.

Nuclear magnetic resonance and x-ray microtomography pore-scale analysis of oil recovery in mixed-porosity carbonates

AAPG Bulletin ◽  
2020 ◽  
Vol 103 (1) ◽  
pp. 37-52
Author(s):  
Hubert King ◽  
Michael Sansone ◽  
John Dunsmuir ◽  
Nicole Callen ◽  
Pavel Kortunov ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Oil Recovery ◽  
Scale Analysis ◽  
Pore Scale ◽  
X Ray ◽  
Nuclear Magnetic
Sign in / Sign up

Export Citation Format

Share Document