云南化工2026，Vol.53Issue(4)：107-110,4.DOI:10.3969/j.issn.1004-275X.2026.04.24
双河油田A区长6油层分层注水先导试验与效果评价
Pilot Test and Effectiveness Evaluation of Layered Water Injection in the Chang 6 Reservoir,Area A of Shuanghe Oilfield
王振龙 1郝江涛 1陈泓竹 1张晓娜 1程羽 1常梅梅1
作者信息
- 1. 延长油田股份有限公司 注水开发指挥部,陕西 延安 716000
- 折叠
摘要
Abstract
To address the poor performance of water injection development caused by strong heterogeneity in the ultra-low permeability Chang 6 reservoir of Block A,Shuanghe Oilfield,this study evaluates the adaptability of layered water injection technology.Based on detailed reservoir characterization,eight injection-production well groups were selected for a pilot test.Dynamic monitoring data were comprehensively utilized to conduct acoupled analysis of the impacts of geological properties,injection technology,and injected water quality on development performance.The trial demonstrated that layered water injection significantly improves the sweepefficiency(averaging 94.8%in effective well groups)and successfully reverses the production decline trend,turning both the natural and comprehensive decline rates negative(e.g.,the comprehensive decline rate in Well Group G dropped to-6.2%).However,the technical effectiveness has clear application boundaries:the lower limit of res-ervoir permeability is approximately 1.2×10-3 μm2,and water quality is a critical success factor.Well groups using produced water reinjection performed poorly due to severe exceedances in suspended solids,oil content,and sulfate-reducing bacteria(SRB>85 cells/mL).Layered water injection technology is suitable for this area,but its successful application strongly depends on the synergy among"geological optimization,pre-cise engineering,and standard-compliant water quality."It is recommended that this technology be promoted in zones meeting the permeability criteria and that core water quality control indicators,specifically SRB≤10 cells/mL and oil content≤10 mg/L,be strictly enforced.关键词
分层注水/先导试验/效果评价/特低渗透油藏/水质控制Key words
Layered Water Injection/Pilot Test/Effectiveness Evaluation/Ultra-low Permeability Reservoir/Water Quality Control分类
能源科技引用本文复制引用
王振龙,郝江涛,陈泓竹,张晓娜,程羽,常梅梅..双河油田A区长6油层分层注水先导试验与效果评价[J].云南化工,2026,53(4):107-110,4.
