辽宁石油化工大学学报2025，Vol.45Issue(1)：65-73,9.DOI:10.12422/j.issn.1672-6952.2025.01.009
海上油田化学驱与加密协同增效技术适应性分析
Adaptability Analysis of Synergistic Enhanced Oil Recovery Techniques Through Chemical Flooding and Infill Well Patterns in Offshore Oilfields
摘要
Abstract
Offshore oilfield development faces complex geological conditions and high development costs,with limited platform lifespans and well locations.These constraints reduce the effectiveness of chemical flooding for enhancing oil recovery.Based on the geological characteristics of offshore oilfields,and drawing on the results of synergistic enhanced oil recovery(EOR)techniques combining chemical flooding and infill well patterns in Daqing,Dagang,and Shengli oilfields,this study evaluates the synergistic potential of chemical flooding agents,well pattern infill,and layer adjustment.The synergy between chemical flooding and infill well pattern optimization for enhanced oil recovery was established.Relying on numerical simulation,an optimized design for synergistic chemical flooding and infill well patterns was developed for the SZ36-1 oilfield.The effects of reservoir permeability,permeability heterogeneity,and crude oil viscosity on enhanced oil recovery potential were clarified,along with the establishment of corresponding boundaries.The study demonstrated that after the original inverted nine-spot well pattern is encrypted into an oblique inverted nine-spot well pattern,the well spacing is reduced by half.Combined with polymer flooding technology,the recovery rate can be increased by 9.8%,which is 3.4%higher than the sum of the recovery increases achieved by independent water flooding and polymer flooding.This result confirms that by utilizing the synergistic effect of chemical flooding and infill well pattern technology in offshore oilfields,the sweep efficiency of the oil displacement system can be significantly enhanced,leading to a substantial increase in recovery rates and optimization of production capacity.关键词
化学驱/井网加密/二三结合/协同增效Key words
Chemical flooding/Well pattern encryption/Two-three combination/Synergistic effect分类
石油、天然气工程引用本文复制引用
唐恩高,李乐忠,周文胜,王公昌,张增华,金一,杨二龙..海上油田化学驱与加密协同增效技术适应性分析[J].辽宁石油化工大学学报,2025,45(1):65-73,9.基金项目
中海油"十四五"重大科技专项项目(KJGG2021-0500). （KJGG2021-0500）
