石油石化绿色低碳2026，Vol.11Issue(2)：45-54,10.DOI:10.20131/j.cnki.syshlsdt.20260423.001
高含水油田注水系统完整性评估及综合治理技术
Integrity Assessment and Comprehensive Treatment Technology of Water Injection System in High Water Cut Oilfields
赵东煜 1王超 2刘佳 1栗媛媛 1刁广智 1宋潇1
作者信息
- 1. 中国石油天然气股份有限公司长庆油田分公司,陕西 西安 718600
- 2. 四川越盛油气技术服务有限公司长庆分公司,陕西 西安 7187600
- 折叠
摘要
Abstract
To address the common technical challenges in waterflooding systems during high water-cut periods,such as poor wellbore integrity,severe pipeline corrosion,and low waterflooding efficiency,this study focuses on the X operation area.Through comprehensive diagnostic evaluation and systematic optimization of water injection wells,this study proposes targeted remediation measures designed to improve current waterflood performance in the target reservoir.The study innovatively develops a wellbore management system combining electromagnetic inspection(EMAT)with glass-reinforced epoxy(GRE)-lined tubing for high-salinity(≥50 000 mg/L)conditions,creates an integrated"electro-induced sequential air flotation transient descaling"water treatment process,and establishes a smart pipeline early-warning method based on residual strength analysis.This study adopts on-site inspections to evaluate the wellbore integrity of 219 injection wells in the target area.The results reveal 170 scaling wells and 189 corroded wells,including 65 severely corroded wells.Residual strength analysis is conducted on 597 injection pipelines with a total length of 397.7 km,identifying 159 high-risk aging pipelines.By retrofitting 8 water treatment units and optimizing operational parameters at 3 injection stations,a differentiated waterflooding control strategy is developed.Post-treatment results show a 27.6%reduction in wellbore failure rates,a decrease in system load rate from 44.7%to 35.3%,and an improvement in produced water treatment compliance to 95.1%.However,CO2 injection stations and 41 severely corroded valve assemblies still require focused remediation.Recommend prioritizing the replacement of 4.3 km high-risk pipelines with DN65-25MPa flexible composite pipes,promoting electromagnetic inspection and GRE-lined tubing technology,and establishing an IoT-based intelligent early warning system.This study provides a valuable reference for waterflood development in high-salinity oilfields,offering actionable strategies to enhance recovery in mature reservoirs.关键词
油田注水开发/井筒完整性/高矿化度采出水/腐蚀与结垢/管网老化/水处理工艺优化/智能化注水调控Key words
oilfield waterflooding development/wellbore integrity/high-salinity produced water/corrosion and scaling/pipeline aging/water treatment process optimization/intelligent waterflooding control分类
能源科技引用本文复制引用
赵东煜,王超,刘佳,栗媛媛,刁广智,宋潇..高含水油田注水系统完整性评估及综合治理技术[J].石油石化绿色低碳,2026,11(2):45-54,10.
