Significance of Advanced Spontaneous Imbibition, and Wettability Alteration on Enhanced Oil Recovery (EOR) in Tight Oil Reservoirs

2020 ◽  
pp. 3763-3780
Author(s):  
Alvin K. Mulashani ◽  
Zhou Desheng ◽  
Martin Kawamala
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Spontaneous Imbibition ◽  
Oil Reservoirs ◽  
Wettability Alteration ◽  
Tight Oil ◽  
Tight Oil Reservoirs

Facile Fabrication of Nanoemulsions through the Efficient Catanionic Surfactants for Spontaneous Imbibition in Tight Oil Reservoirs: Experimental and Numerical Simulation

2021 ◽  
Author(s):  
Bing Wei ◽  
Runxue Mao ◽  
Haoran Tang ◽  
Lele Wang ◽  
Dianlin Wang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Oil Recovery ◽  
Surfactant Solution ◽  
Spontaneous Imbibition ◽  
Oil Reservoirs ◽  
Wettability Alteration ◽  
Tight Oil ◽  
Catanionic Surfactants ◽  
The Matrix ◽  
Tight Oil Reservoirs

Abstract Spontaneous imbibition (SI) is an essential method for accelerating mass exchange between fracture and matrix in tight oil reservoirs. However, conventional systems such as brine and surfactant solution have limited imbibition effects, so there is still abundant remaining oil in the matrix. Nanoemulsion holds the most promising potential in improving tight oil recovery owing to the favorable surface activity and nanoscale droplets, but it still lacks economic and facile methods to fabricate nanoemulsions. Therefore, in this paper, we prepared a kind of O/W nanoemulsion of catanionic surfactants with a low dosage of surfactant and energy consumption, which was then used to assess spontaneous imbibition performance in Changqing outcrop cores by experimental and numerical simulation. We have fully considered the possible imbibition mechanisms of nanoemulsion including wettability alteration, IFT reduction, solubilization and emulsification, etc., and successfully applied to the nanoemulsion imbibition model. The model and experimental data were found to be in good agreement. The results showed that the imbibition rate and oil recovery factor of the nanoemulsion in the first 100 hours are lower than that of brine. In the late stage, we observed a longer equilibrium time and a faster and higher oil imbibition process in nanoemulsion with ultralow IFT. Finally, we confirmed that solubilization and emulsification is one of the domiant mechanisms for nanoemulsion imbibition by comparing with the modelling without considering solubilization and emulsification.

Huff-n-Puff Technology for Enhanced Oil Recovery in Shale/Tight Oil Reservoirs: Progress, Gaps, and Perspectives

2021 ◽  
Author(s):  
Muhend Milad ◽  
Radzuan Junin ◽  
Akhmal Sidek ◽  
Abdulmohsin Imqam ◽  
Mohamed Tarhuni
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Oil Reservoirs ◽  
Tight Oil ◽  
Tight Oil Reservoirs

A Critical Review of CO2 Enhanced Oil Recovery in Tight Oil Reservoirs of North America and China

2019 ◽  
Author(s):  
Zhaojie Song ◽  
Yuzhen Li ◽  
Yilei Song ◽  
Baojun Bai ◽  
Jirui Hou ◽  
...  
Keyword(s):  
North America ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Critical Review ◽  
Oil Reservoirs ◽  
Tight Oil ◽  
Tight Oil Reservoirs

scholarly journals Optimization of triple-alternating-gas (TAG) injection technique for enhanced oil recovery in tight oil reservoirs

2021 ◽  
Author(s):  
Mvomo Ndzinga Edouard ◽  
Pingchuan Dong ◽  
Chinedu J. Okere ◽  
Luc Y. Nkok ◽  
Abakar Y. Adoum ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Gas Injection ◽  
Oil Reservoirs ◽  
Recovery Factor ◽  
Injection Technique ◽  
Tight Oil ◽  
Compositional Model ◽  
Injection Scheme ◽  
Tight Oil Reservoirs

AbstractAfter single-gas (SG) injection operations in tight oil reservoirs, a significant amount of oil is still unrecovered. To increase productivity, several sequencing gas injection techniques have been utilized. Given the scarcity of research on multiple-gas alternating injection schemes, this study propose an optimized triple-alternating-gas (TAG) injection for improved oil recovery. The performance of the TAG process was demonstrated through numerical simulations and comparative analysis. First, a reservoir compositional model is developed to establish the properties and composition of the tight oil reservoir; then, a suitable combination for the SG, double alternating gas (DAG), and TAG was selected via a comparative simulation process. Second, the TAG process was optimized and the best case parameters were derived. Finally, based on the oil recovery factors and sweep efficiencies, a comparative simulation for SG, DAG, and TAG was performed and the mechanisms explained. The following findings were made: (1) The DAG and TAG provided a higher recovery factor than the SG injection and based on recovery factor and economic advantages, CO2 + CH4 + H2S was the best choice for the TAG process. (2) The results of the sensitivity analysis showed that the critical optimization factors for a TAG injection scheme are the injection and the production pressures. (3) After optimization, the recovery factor and sweep efficiency of the TAG injection scheme were the best. This study promotes the understanding of multiple-gas injection enhanced oil recovery (EOR) and serves as a guide to field design of gas EOR techniques.

A critical review of CO2 enhanced oil recovery in tight oil reservoirs of North America and China

Fuel ◽  
2020 ◽  
Vol 276 ◽  
pp. 118006 ◽  
Author(s):  
Zhaojie Song ◽  
Yilei Song ◽  
Yuzhen Li ◽  
Baojun Bai ◽  
Kaoping Song ◽  
...  
Keyword(s):  
North America ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Critical Review ◽  
Oil Reservoirs ◽  
Tight Oil ◽  
Tight Oil Reservoirs

scholarly journals Carbon dioxide-based enhanced oil recovery methods to evaluate tight oil reservoirs productivity: A laboratory perspective coupled with geo-sequestration feature

2021 ◽  
Vol 7 ◽  
pp. 4697-4704
Author(s):  
Rahmad Syah ◽  
S.M. Alizadeh ◽  
Mahyuddin K.M. Nasution ◽  
Mohammad Nabi Ilani Kashkouli ◽  
Marischa Elveny ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Oil Reservoirs ◽  
Tight Oil ◽  
Tight Oil Reservoirs ◽  
Recovery Methods

Enhanced oil recovery in tight oil reservoirs using dual injection and production

2021 ◽  
Vol 3 ◽  
pp. 58-61
Author(s):  
P.V. Pyatibratov ◽  
◽  
D.S. Kalinin ◽  
L.N. Nazarova ◽  
◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Oil Reservoirs ◽  
Tight Oil ◽  
Dual Injection ◽  
Tight Oil Reservoirs

scholarly journals Flow behavior of N2 huff and puff process for enhanced oil recovery in tight oil reservoirs

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Teng Lu ◽  
Zhaomin Li ◽  
Jian Li ◽  
Dawei Hou ◽  
Dingyong Zhang
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Flow Behavior ◽  
Oil Reservoirs ◽  
Tight Oil ◽  
Tight Oil Reservoirs
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