Experimental study of the influencing factors and mechanisms of the pressure-reduction and augmented injection effect by nanoparticles in ultra-low permeability reservoirs

作     者：Pan Wang Yu-Hang Hu Liao-Yuan Zhang Yong Meng Zhen-Fu Ma Tian-Ru Wang Zi-Lin Zhang Ji-Chao Fang Xiao-Qiang Liu Qing You Yan Zhang Pan Wang;Yu-Hang Hu;Liao-Yuan Zhang;Yong Meng;Zhen-Fu Ma;Tian-Ru Wang;Zi-Lin Zhang;Ji-Chao Fang;Xiao-Qiang Liu;Qing You;Yan Zhang

作者机构：Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development EngineeringChina University of Geosciences(Beijing)Beijing100083China School of Energy ResourcesChina University of Geosciences(Beijing)Beijing100083China Petroleum Engineering Technology Research InstituteSinopec Shengli Oilfield CompanyDongying257000ShandongChina Hekou Oil Production PlantSinopec Shengli Oilfield CompanyDongying257200ShandongChina Petroleum Exploration and Production Research InstituteSINOPECBeijing102206China CNPC Engineering Technology R&D Company LimitedBeijing102206China 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2024年第21卷第3期

页      面：1915-1927页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：supported by the National Natural Science Foundation of China(Nos.52074249,U1663206,52204069) Fundamental Research Funds for the Central Universities 

主　　题：Nanoparticle Pressure reduction Augmented injection Ultra-low permeability reservoir 

摘      要：Nanoparticles(NPs)have gained significant attention as a functional material due to their ability to effectively enhance pressure reduction in injection processes in ultra-low permeability *** are typically studied in controlled laboratory conditions,and their behavior in real-world,complex environments such as ultra-low permeability reservoirs,is not well understood due to the limited scope of their *** study investigates the efficacy and underlying mechanisms of NPs in decreasing injection pressure under various injection conditions(25—85℃,10—25 MPa).The results reveal that under optimal injection conditions,NPs effectively reduce injection pressure by a maximum of 22.77%in core *** pressure reduction rate is found to be positively correlated with oil saturation and permeability,and negatively correlated with temperature and ***,particle image velocimetry(PIV)experiments(25℃,atmospheric pressure)indicate that the pressure reduction is achieved by NPs through the reduction of wall shear resistance and wettability *** work has important implications for the design of water injection strategies in ultra-low permeability reservoirs.