High-Temperature-Resistant Epoxy Resin Gel Behavior and Profile Control in Heavy Oil Steam Drive
Author:
Shi Ying1, He Hong2, Li Yu3, Ding Fei1, Zhou Zhuo4, Xiong Nuolin5
Affiliation:
1. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China 2. College of Petroleum Engineering, Yangtze University, Wuhan 430100, China 3. Exploration and Development Research Institute, PetroChina Qinghai Oilfield Company, Jiuquan 736200, China 4. Petroleum Engineering Technology Research Institute of Jianghan Oilfield Administration Bureau of Sinopec Group, Wuhan 430030, China 5. Sinopec Jianghan Oilfield Fuling Shale Gas Company, Chongqing 408000, China
Abstract
In recent years, the prominence of conformance control technology in heavy oil steam flooding has significantly increased in oilfield development. However, the high-temperature demands of heavy oil steam flooding require more resilient plugging agents. Resin-based plugging agents, known for their exceptional temperature resistance and strength, have emerged as a viable solution within this domain. Yet, they face issues like rapid curing at high temperatures and limited sealing reach. Thus, we introduce a novel approach: epoxy resin gel (EHRB), consisting of epoxy resin (ER) as the curing agent, urotropine (HMTA) and pyrocatechol (RO) as cross-linking agents, and n-butyl glycidyl ether (BGE) as a diluent. EHRB gels at 130 °C in 5.4 h, with curing commencing at 160 °C, extending resin curing time and expanding the sealing radius. This study assessed EHRB’s performance and high-temperature stability through displacement experiments, TGA, and DSC analysis. The results indicate that the EHRB has low viscosity, high compressive strength, and minimal mass loss at high temperatures. At 260 °C, the mass loss is less than 15%. The plugging rate exceeds 90%, and it can withstand steam flushing for over 6 PV. Additionally, it demonstrates a 17% improvement in EOR. EHRB demonstrates outstanding capabilities in proficient channel control for heavy oil steam flooding, offering vital technical support for conformance control in this challenging environment.
Subject
Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction
Reference40 articles.
1. Ding, M., Liu, P., Wang, Y., Zhang, Z., Dong, J., and Duan, Y. (2023). Adaptability to Enhance Heavy Oil Recovery by Combination and Foam Systems with Fine-Emulsification Properties. Energies, 16. 2. Luo, C., Wu, Y., He, W., Gao, Y., and Liu, J. (2023). Mechanisms and Operational Strategies of Multi-Lateral Steam-Assisted Gravity Drainage (SAGD) for Heterogeneous Reservoirs. Energies, 16. 3. Lv, B., Sun, P., Wu, Y., Yang, Z., Liu, P., Wang, C., and Liu, Q. (2023). Study and Application of Oily Sludge Profile Control Technology in Heavy Oil Reservoir. Energies, 16. 4. Minakov, A.V., Meshkova, V.D., Guzey, D.V., and Pryazhnikov, M.I. (2023). Recent Advances in the Study of In Situ Combustion for Enhanced Oil Recovery. Energies, 16. 5. Xie, Q., Liang, G., Liu, S., Wang, R., Feng, M., and Liao, C. (2023). Physical and Numerical Simulations of Steam Drive and Gravity Drainage Using the Confined Bottom Oil–Water Transition Zone to Develop Super Heavy Oil. Energies, 16.
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