大庆石油地质与开发2026，Vol.45Issue(3)：75-82,8.DOI:10.19597/J.ISSN.1000-3754.202501011
高含水油藏剩余油富集区筛选评价方法及其应用
Method for screening and evaluating remaining oil enrichment areas in high water-cut reservoirs and its application
摘要
Abstract
High water-cut reservoirs have scattered remaining oil,resulting in difficulties in analyzing remaining oil potential areas suitable for complex structural wells development and limit tapping effect.Based on the study of dis-tribution characteristics of remaining oil in Placanticline high water-cut reservoirs,a method for accurately screen-ing and evaluating remaining oil enrichment areas is proposed,eastablishing an evaluation system for enrichment areas indicators including 5 factors.The preliminary screened enrichment areas for remaining oil are evaluated by using comprehensive fuzzy evaluation method,and potential areas are selected based on the evaluation results.The results show that the proposed concept of the remaining oil continuity coefficient enables the three-dimensional char-acterization of remaining oil enrichment areas with various areal scales,thicknesses and water-flooded degrees in high water-cut reservoirs,allowing rapid and accurate screening of remaining oil enrichment areas suitable for com-plex structural wells development.Taking block X in Daqing Oilfield as an example,this method is used to select potential areas,and 8 sidetracked horizontal wells are implemented for targeted potential tapping in the filed,achieving excellent results.This demonstrates that the technique improves the reliability of remaining oil enrich-ment areas analysis and is suitable for accucrate targeted potential tapping in high water-cut reservoirs.关键词
高含水期/剩余油连片系数/模糊综合评判/剩余油评价/侧钻水平井Key words
high water-cut stage/continuity coefficient of remaining oil/comprehensive fuzzy evaluation/remain-ing oil evaluation/sidetracked horizontal wells分类
能源科技引用本文复制引用
黄伟,杨清立,郑宪宝,左松林,张昌艳..高含水油藏剩余油富集区筛选评价方法及其应用[J].大庆石油地质与开发,2026,45(3):75-82,8.基金项目
新型油气勘探开发国家科技重大专项课题"中高渗油田大幅提高采收率新方法与新技术"(2025ZD1406100) （2025ZD1406100）
中国石油天然气集团有限公司攻关性应用性科技专项"特高含水后期水驱持续高效开发技术研究与试验"(2023ZZ22YJ02). （2023ZZ22YJ02）
