水力脉冲在储层内传播及衰减性研究  

Study on Propagation and Attenuation of Hydraulic Pulse in Reservoir

作　　者：邹剑 符扬洋 刘长龙 高尚 兰夕堂 毛庆凯 郭沛文 ZOU Jian;FU Yangyang;LIU Changlong;GAO Shang;LAN Xitang;MAO Qingkai;GUO Peiwen(CNOOC China Limited,Tianjin Branch,Tianjin 300450,China;CNOOC Ener Tech-Drilling&Production Co.,Tianjin 300452,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300450 [2]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《北京石油化工学院学报》2024年第1期31-37,共7页Journal of Beijing Institute of Petrochemical Technology

基　　金：渤海油田稳产3000万吨-上产4000万吨关键技术研究项目(CNOOC-KJ135-ZDXM-36-TJ-01-TJ)。

摘　　要：为优化脉动注水参数,提高水力脉冲在储层中作用距离,减小脉冲衰减,开展了水力脉冲在储层内传播、衰减性研究,通过数值方程解析和Abaqus有限元分析,形成对水力脉冲在储层内传播、衰减性的认识,并指出水力脉冲有效作用范围。研究结果表明:脉冲频率和脉冲幅值对于脉冲压力幅值衰减影响较大,脉冲频率和幅值增加,衰减速度呈现加快趋势;储层渗透率和注入流体黏度对脉冲能量衰减影响较大,渗透率越低,其脉冲衰减越快,脉冲注水的效果要好于脉冲注高黏化学剂体系;为减小脉冲衰减、提高作用距离,应尽量减小脉冲频率(<1 Hz)、增加脉冲压力幅值,脉冲复合注入高黏化学剂时,尽量采用交替注入的方式。In order to optimize the pulsating water injection parameters,improve the action distance of hydraulic pulse in the reservoir,reduce the pulse attenuation,carry out the research on the propagation and attenuation of hydraulic pulse in the reservoir,form the understanding of the propagation and attenuation of hydraulic pulse in the reservoir through numerical equation analysis and ABAQUS finite element analysis,and point out the effective action range of hydraulic pulse.The results show that:1)the pulse frequency and pulse amplitude have a great influence on the attenuation of pulse pressure amplitude,the pulse frequency and amplitude increase,and the attenuation speed shows an accelerating trend;2)The reservoir permeability and injected fluid viscosity have a great impact on the pulse energy attenuation.The lower the permeability,the faster the pulse attenuation.The effect of pulse water injection is better than that of pulse injection of high viscosity chemical agent system.3)in order to reduce the pulse attenuation and improve the action distance,the pulse frequency(<1 Hz)should be reduced as much as possible and the pulse pressure amplitude should be increased.When pulse compound injection of high viscosity chemical agent,Alternate injection of oil recovery shall be adopted as far as possible.

关 键 词：水力脉冲 频率 振幅 衰减规律 作用距离 

分 类 号：TE53[石油与天然气工程—油气田开发工程]