Article
Energy & Fuels
Yi-Fei Liu, Cai-Li Dai, Chen-Wei Zou, Qing You, Ming-Wei Zhao, Guang Zhao, Yong-Peng Sun
Summary: This study investigated the impact of flow rate on dynamic imbibition in fractured tight sandstone cores through online nuclear magnetic resonance core-flooding experiments. The study found that flow rate has a significant influence on oil recovery, and the total oil recovery reached 29.8% at the optimal flow rate.
Article
Energy & Fuels
Liangbin Dou, Yingjian Xiao, Hui Gao, Rui Wang, Chenglu Liu, Hengbin Sun
Summary: This study analyzes the effects of spontaneous imbibition, dynamic imbibition, and their combination on oil recovery efficiency, filling the knowledge gap in water flooding in tight sandstone and low permeability reservoirs. It proposes a method to enhance oil recovery efficiency through spontaneous and dynamic imbibition, offering a feasible workflow for field applications.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Chemical
Xiong Liu, Xin Fan, Jian Yin, Yang Zhang
Summary: The study shows that in fractured tight sandstone reservoirs, imbibition replacement mainly occurs in fractures, with macropores contributing the most to imbibition recovery, while mesopores, micropores, and pinholes contribute less. Capillary force and gravitational force are key parameters controlling fluid flow, and fluid replacement mostly happens in the early stages of imbibition.
Article
Energy & Fuels
Qiu Rundong, Gu Chunyuan, Xue Peiyu, Xu Dongxing, Gu Ming
Summary: The study investigated the impact of nanofluids on the imbibition characteristics of sandstone cores, demonstrating that nanofluids can significantly reduce the interfacial tension between the oil phase and water phase, thereby enhancing imbibition and oil discharge efficiency. Results also showed that increasing temperature can accelerate the imbibition and oil discharge rate, while the permeability of sandstone cores plays a significant role in determining the location of oil discharge during the imbibition process.
PETROLEUM EXPLORATION AND DEVELOPMENT
(2022)
Article
Energy & Fuels
Kun Yang, Fu-Yong Wang, Jiu-Yu Zhao
Summary: Based on high-pressure mercury injection and nuclear magnetic resonance experiments, this study describes the pore distribution of tight sandstone. The influence of fractures, core porosity and permeability, and surfactants on the spontaneous imbibition of tight sandstone is investigated. The findings show that fractures can effectively reduce oil drop adsorption on the core surface, increasing the imbibition recovery rate. Enhanced pore connectivity, higher core porosity and permeability, and the use of surfactants contribute to improved imbibition recovery of tight oil reservoirs.
Article
Energy & Fuels
Zhihao Jiang, Gaoren Li, Peiqiang Zhao, You Zhou, Zhiqiang Mao, Zhidi Liu
Summary: Wettability is crucial for understanding the seepage characteristics of tight sandstone reservoirs. This study investigates the spontaneous imbibition and displacement behaviors of mixed-wet tight sandstone reservoirs using high precision balance and nuclear magnetic resonance (NMR) T2 experiment. The results reveal different types of pores with different wettability and provide a novel wettability evaluation method for mixed-wet tight sandstone.
Article
Energy & Fuels
Wenlian Xiao, Yubin Yang, Li Ding, Yang Wang, Xiaoying Zhou, Jitian Ren, Min Li, Jinzhou Zhao, Lingli Zheng
Summary: This study investigated the effect of spontaneous imbibition (SI) plus waterflooding on oil recovery in tight sandstone reservoirs. It was found that oil in the SI process mainly comes from macropores and micropores, which is different from previous findings. The SI-plus-waterflooding process showed higher oil recovery factor and lower residual oil saturation compared to waterflooding-only process.
PETROLEUM SCIENCE AND TECHNOLOGY
(2022)
Article
Energy & Fuels
Caoxiong Li, Chenggang Xian, Hongkui Ge, Yinghao Shen, Yang Liu
Summary: In this study, an intermingled fractal method was used to represent tight sandstone, and a new imbibition model considering factors such as hemiwicking, main meniscus imbibition, and dynamic wetting in the matrix was established and validated using experimental data. The results showed that hemiwicking is crucial when investigating imbibition behavior in tight sandstone.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Dengke Liu, Dazhong Ren, Kun Du, Yiru Qi, Feng Ye
Summary: This research reveals that hydrophilic minerals can increase imbibition efficiency, and the development of tiny pores makes oil more easily replaced. Additionally, the enhancement of pore connectivity can also promote spontaneous imbibition.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Runzi Xu, Shenglai Yang, Zhipeng Xiao, Yijie Jin
Summary: In this study, different pore throat conditions of fracturing fluid were quantitatively evaluated, and the influences of permeability, wettability, and viscosity were investigated. Results showed that the scale of fracturing fluid imbibition ranged from 0.10 ms to 51.20 ms, with higher permeability leading to better imbibition effect.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Lanlan Yao, Zhengming Yang, Haibo Li, Bo Cai, Chunming He, Debin Xia
Summary: Imbibition is an important method of oil recovery in shale oil reservoirs, and the impact of energy enhancement on imbibition is not extensively studied. Pressurized imbibition can increase the recovery ratio of fractured shale, while spontaneous imbibition can improve the ultimate recovery ratio of matrix shale.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Article
Energy & Fuels
Dongjin Xu, Shihai Chen, Jinfeng Chen, Jinshan Xue, Huan Yang
Summary: The study shows that in hydraulic fracturing operations, fracturing fluid starts to infiltrate from the contact surface between the formation and the fluid, leading to formation damage at different depths over time. Sandstone cores with low permeability are more susceptible to damage compared to high-permeability cores, due to their stronger capability of retaining fracturing fluid.
Article
Engineering, Geological
Xiao-Ping Zhou, Xiao-Kang Pan, Hao Cheng
Summary: This paper investigates the creep behavior of sandstone under different confining pressures, analyzing the effect of confining pressure on the incremental value of porosity and establishing a relationship between micro-crack expansion of rocks and macro-creep characteristics of sandstone. The results can provide a theoretical basis for the deep mining of mineral resources and the structural stability analysis of deep-buried underground engineering.
ROCK MECHANICS AND ROCK ENGINEERING
(2021)
Article
Energy & Fuels
Tiantian Zhang, Zhiping Li, Fengpeng Lai, Caspar Daniel Adenutsi, Qing You
Summary: Pore structure and fractal characteristics have a significant impact on spontaneous imbibition efficiency, with mesopores being more conducive to gas production.
Article
Physics, Multidisciplinary
Dazhong Ren, Litao Ma, Dengke Liu, Jing Tao, Xueqing Liu, Rongjun Zhang
Summary: This research systematically analyzed the physical properties and thin-section images of tight sandstone reservoirs and examined the efficiency of spontaneous imbibition through core tests. The results showed that quartz and feldspar predominantly contributed to mineralogy, and low brine salinity, high oil viscosity, and high interfacial tension were associated with strong spontaneous imbibition ability and fast process. High interfacial tension was identified as the dominant controlling factor in this field. Furthermore, the parameter simulation model established using the dimension reduction method provided a reliable prediction of spontaneous imbibition efficiency.
FRONTIERS IN PHYSICS
(2022)
Article
Energy & Fuels
Xingbang Meng, Minhui Qi, Zhan Meng, Tong Li, Zhongxiao Niu
Article
Energy & Fuels
Guangfeng Liu, Zhan Meng, Xuejiao Li, Daihong Gu, Daoyong Yang, Hang Yin
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2019)
Article
Energy & Fuels
Lu Wang, Yongming He, Hao Chen, Zhan Meng, Zhilin Wang
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2019)
Article
Chemistry, Physical
Kaiqiang Zhang, Zhan Meng, Lirong Liu
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2019)
Article
Energy & Fuels
Guangfeng Liu, Zhan Meng, Dayong Luo, Jianning Wang, Daihong Gu, Daoyong Yang
Article
Energy & Fuels
Tengfei Wang, Haiming Fan, Weipeng Yang, Zhan Meng
Article
Chemistry, Physical
Guoqing Xu, Yun Jiang, Yang Shi, Yujiao Han, Mingxian Wang, XingHang Zeng
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Energy & Fuels
Zhan Meng, Honglin Lu, Xiaohua Tan, Guangfeng Liu, Lianhe Wang, Daoyong Yang
FRONTIERS IN ENERGY RESEARCH
(2020)
Article
Energy & Fuels
Sheng-Zhi Qi, Xiao-Hua Tan, Xiao-Ping Li, Zhan Meng, You-Jie Xu, Daming Tang
FRONTIERS IN ENERGY RESEARCH
(2020)
Article
Energy & Fuels
Qi ShengZhi, Tan XiaoHua, Li Xiao-Ping, Meng Zhan, Xu YouJie
Summary: This study establishes a new elastic-plastic damage constitutive model for shale, which accurately simulates the elastic-plastic damage characteristics of shale under stress, providing a new numerical simulation method for describing elastic-plastic damage in shale.
NATURAL GAS INDUSTRY B
(2021)
Article
Energy & Fuels
Youjie Xu, Qiguo Liu, Xiaoping Li, Zhan Meng, Sihan Yang, Xiaohua Tan
Summary: This study establishes a semi-analytical model for hydraulic fractured wells with induced fractures in composite shale gas reservoirs, which is validated through numerical methods. Various factors influencing wellbore pressure response and production decline curve are discussed in detail.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Proceedings Paper
Engineering, Petroleum
Yun Jiang, Yang Shi, Xianyou Yang, Chunming Xiong, Ying Gao, Yue Yu, Shengjiang Lian, Yue Li, Guoqing Xu
PROCEEDINGS OF THE INTERNATIONAL FIELD EXPLORATION AND DEVELOPMENT CONFERENCE 2017
(2019)
Proceedings Paper
Engineering, Petroleum
Yun Jiang, Yang Shi, Liang Zhao, Xianyou Yang, Yue Li, Yue Yu, Ying Gao, Meng Wang
PROCEEDINGS OF THE INTERNATIONAL FIELD EXPLORATION AND DEVELOPMENT CONFERENCE 2017
(2019)
Proceedings Paper
Engineering, Petroleum
Guoqing Xu, Xianyou Yang, Yang Shi, Yun Jiang, Futao Li
PROCEEDINGS OF THE INTERNATIONAL FIELD EXPLORATION AND DEVELOPMENT CONFERENCE 2017
(2019)