Article
Chemistry, Physical
Pourya Malmir, Abdolnabi Hashemi, Bahram Soltani Soulgani
Summary: This study investigates the effect of wettability on the performance of Preformed Particle Gel (PPG) for water shutoff in fractured reservoirs, finding that wettability alteration is a key mechanism for PPG in oil wet fractured reservoirs during water shutoff process.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Energy & Fuels
Bin Xu, Yan Wang
Summary: This study confirmed the good temperature and salt resistant performance of preformed particle gels (PPGs) in low-permeability fractured reservoirs, as well as their characteristics of strong plugging strength but shorter valid period. Field tests suggested that multiple rounds of profile control using PPGs with different particle sizes can achieve deep profile control.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2021)
Review
Energy & Fuels
Jianqiao Leng, Mingzhen Wei, Baojun Bai
Summary: This paper reviews the importance and application of preformed particle gel in controlling reservoir conformance in oilfields, covering the particle gel transport and retention mechanisms in experiments and numerical simulation models. It emphasizes the need for different models to simulate particle gel transport in open fractures and porous media with pore networks due to different transport and plugging mechanisms.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Review
Energy & Fuels
Mina Seidy Esfahlan, Elnaz Khodapanah, Seyyed Alireza Tabatabaei-Nezhad
Summary: The study focused on the application and performance evaluation of preformed particle gels (PPGs) in controlling high water production in mature oil reservoirs, and carefully examined the hybrid methods of PPG with other oil recovery enhancement methods.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Farzad Aqcheli, Mahsa Baghban Salehi, Vahid Taghikhani, Hossein Pahlevani
Summary: This study successfully synthesized a new PPG suspension and characterized its micro and macro structures through scanning electron microscopy, Fourier transforms IR spectra, etc. By conducting frequency sweep tests and swelling tests, a novel combination of PPG suspension was identified to effectively enhance oil recovery in the field.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Aminsadegh Paprouschi, Mobeen Fatemi, Mohammad Hossein Ghazanfari
Summary: Novel Preformed Particle Gels (PPGs) were designed and synthesized for application in harsh environments, and their performance was verified through a series of experiments, showing that the addition of graphene nano-platelets and sodium silicate significantly improved their rheological properties and mechanical strength.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
M. Elmuzafar Ahmed, Abdullah S. S. Sultan, Muhammad Shahzad Kamal, Tinku Saikia, Mohamed Mahmoud, Shirish Patil, Mazen Kanj
Summary: This study evaluated a locally synthesized gemini surfactant with high stability, salt tolerance, and CEOR potential for reducing interfacial tension and enhancing oil recovery. The study found that as the gemini surfactant concentration increased, the interfacial tension also increased. The lowest interfacial tension value of 0.12 mN/m was obtained at a concentration of 0.0005 wt%, while the highest value of 0.84 mN/m was recorded at concentrations of 0.5 and 1 wt%. The highest ultimate recovery of 50.26% was achieved at a concentration of 0.005% GmS.
Article
Polymer Science
Mina Seidy Esfahlan, Elnaz Khodapanah, Seyyed Alireza Tabatabaei-Nezhad, Mehdi Salami-Kalajahi
Summary: A new method for synthesizing PPG with nanogels inside them at high temperature and high salinity conditions was introduced in this study. The new PPG showed higher water absorbance capacity and swelling rate compared to ordinary PPG, making it suitable for deep reservoir conformance control.
Article
Energy & Fuels
Wanli Kang, Jiaqi Wang, Zhengqin Ye, Guojian Gu, Wenming Li, Hongbin Yang, Zhe Li, Hongxing Xu, Zhiqi Lv, Bauyrzhan Sarsenbekuly
Summary: A preformed sawdust gel particle (S-PPG) with superior performance than conventional preformed particle gel (PPG) was presented, and its microscopic morphology, swelling property, viscoelasticity, etc. were studied. The results showed that S-PPG had better performance and could be used as an alternative plugging material.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Ming Li, Jianchun Guo, Fujian Zhou, Lele Cao, Ben Li
Summary: This study evaluated the effect of preformed particle gel (PPG) on the conformance control of naturally fractured tight sandstone reservoirs using a Pressure Transfer Test (PTT) method. The results showed that vertical and oblique penetrations had the highest plugging effect, with a 12% higher rate than fractures without effective channels. Injection pressure and salinity also significantly impacted the plugging efficiency of PPG. This study provides valuable experimental and theoretical references for the field application and further studies of PPG in naturally fractured tight reservoirs.
Article
Engineering, Petroleum
Yang Zhao, Jianqiao Leng, Baihua Lin, Mingzhen Wei, Baojun Bai
Summary: Polymer flooding is commonly used in oil recovery, but its effectiveness is reduced when channels are present in a reservoir. This study showed that injecting microgels to shut off channels can significantly improve polymer-flooding efficiency and enhance oil recovery, especially in reservoirs with high-permeability channels.
Article
Energy & Fuels
NanJun Lai, Dongdong Wang, Junqi Wang, Lei Tang
Summary: This article explores the profile modification of preformed gels using preformed gels with fluorescence properties, CQDs@PPG. By analyzing the properties and fluorescence characteristics of CQDs@PPG, it is found that CQDs@PPG has excellent stability, and only temperature affects its fluorescence properties, which is reversible.
Article
Polymer Science
Reem Elaf, Ahmed Ben Ali, Mohammed Saad, Ibnelwaleed A. Hussein, Hassan Nimir, Baojun Bai
Summary: Oil and gas extraction produce large volumes of produced water, leading to mechanical and environmental issues. A green and biodegradable PPG made of PAM and chitosan has been developed as a blocking agent for water shut-off. The optimal concentrations of PAM and chitosan have been determined, and the swelling capacity and rheological characteristics of PAM/Cs have been studied. PAM/Cs showed promising performance in high-temperature and high-salinity conditions.
Article
Mechanics
Hongbin Yang, Zhiqi Lv, Zhe Li, Bumin Guo, Jian Zhao, Yantao Xu, Wenjiang Xu, Wanli Kang
Summary: To address the issues of uncontrollable swelling ratio and degradation time, as well as insufficient strength, a controllable self-degradable temporary plugging agent (SD-TPA) was developed. SD-TPA was synthesized using different mass ratios of acrylamide, acrylic acid, hydrophobic monomer, and modified nanoparticles. The effects of modified nanoparticles content, hydrophobic monomers content, temperature, and salinity on the swelling performance, self-degradable performance, and rheological properties of SD-TPA were systematically investigated. The results showed that SD-TPA exhibited improved viscoelasticity, shear resistance, and higher yield stress compared to conventional self-degradable temporary plugging agent (CSD-TPA).
Article
Energy & Fuels
Juan Zhao, Yinan Liu, Jian Zhang, Yiqiang Li, Xinyang Sun
Summary: The matching relationship between the particle size of the dispersed phase and the pore throat diameter in a PPG system has been quantified through physical simulation and thin-tube experiments. A calculation method for the equivalent pore throat diameter in a sand-filled pipe model has been proposed based on compact packing principle. Adding polymer and surfactant additives can improve the performance and suspension of PPG particles.
CHEMISTRY AND TECHNOLOGY OF FUELS AND OILS
(2022)
Article
Chemistry, Physical
Mohammad Eslahati, Parviz Mehrabianfar, Ali Akbar Isari, Hossein Bahraminejad, Abbas Khaksar Manshad, Alireza Keshavarz
JOURNAL OF MOLECULAR LIQUIDS
(2020)
Article
Energy & Fuels
Parviz Mehrabianfar, Hossein Bahraminejad, Abbas Khaksar Manshad
Summary: Surface-active agents, such as surfactants, play a crucial role in optimizing key parameters in chemical Enhanced Oil Recovery (EOR) processes. Natural surfactants offer advantages such as lower production costs, lower adsorption capacity, and environmental friendliness.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Farnam Razzaghi-Koolaee, Ghasem Zargar, Bahram Soltani Soulgani, Parviz Mehrabianfar
Summary: In this research, the effect of Acanthophyllum root extract (ACRE) as a bio-based surfactant on reducing reservoir permeability impairment was studied. Various static tests were conducted to investigate the chemical interaction between the surfactant and montmorillonite (Mt), and experiments confirmed that ACRE was effective in preventing permeability reduction and pore plugging in porous media. Overall, ACRE showed high potential in preventing Mt swelling and formation damage in clay-bearing sandstones.
JOURNAL OF PETROLEUM EXPLORATION AND PRODUCTION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Farnam Razzaghi-Koolaee, Parviz Mehrabianfar, Bahram Soltani Soulgani, Ali Esfandiarian
Summary: This research investigates the potential of a biodegradable surfactant derived from Acanthophyllum Plant Root Extract (APRE) for enhanced oil recovery in carbonate reservoirs. Various tests were conducted to evaluate the EOR potential, including interfacial tension measurement, wettability alteration assessment, emulsion stability, compatibility, and surfactant flooding. The results show that the APRE surfactant has the potential to improve oil recovery in carbonate reservoirs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)