石油钻采工艺2026，Vol.48Issue(4)：520-528,543,10.DOI:10.13639/j.odpt.202603024
低渗储层五点法井网压驱注水参数优化及现场应用
Optimization of water injection parameters for fracturing flooding in five-spot well pattern in low-permeability reservoirs and field application
摘要
Abstract
To address the issues of poor parameter matching and lack of quantitative optimization methods during fracturing flooding injection in low-permeability reservoirs,a study on key parameter optimization was conducted.Using the Eclipse numerical simulation software,an ideal five-spot well pattern model was established.Meanwhile,considering the response characteristics of the well pattern and the orientation of hydraulic fracture propagation and distribution,three major categories comprising eight subcategories of fracturing-flooding models were developed.Evaluation indicators for optimizing fracturing flooding parameters were proposed,with particular focus on optimizing critical parameters such as injection volume,half-length of fractures,and injection rate.A variable-rate injection strategy was introduced,ultimately establishing quantitative design limits for process parameters under the theoretical displacement model of five-spot well pattern.Building upon this foundation,the ideal model was mapped to actual field conditions,and fracturing flooding parameter design was applied in Well Group A-1.Results showed that the daily oil production increased to 8.1 t/d from 2.8 t/d before treatment,representing a growth of 189.3%.The average water cut per well decreased from 71.2%to 53.3%,a reduction of 25.1%.These results validate the feasibility and effectiveness of the optimization method for fracturing flooding parameters,providing theoretical support and technical guidance for efficient water flooding development in low-permeability reservoirs.关键词
低渗储层/压驱注水/五点法/数值模拟/压驱缝方位/参数优化Key words
low-permeability reservoirs/fracturing-flooding injection/five-spot well pattern/numerical simulation/fracture orientation/parameter optimization分类
能源科技引用本文复制引用
许柳,龙长俊,修书志,李高峰,王鑫,何山,曹景芝,李玉涛..低渗储层五点法井网压驱注水参数优化及现场应用[J].石油钻采工艺,2026,48(4):520-528,543,10.基金项目
中国石油天然气股份有限公司华北油田分公司科技项目"低渗透油藏压驱开发技术政策及配套工艺技术研究"(编号:25HBYTSJ145). （编号:25HBYTSJ145）
