重庆科技大学学报（自然科学版）2024，Vol.26Issue(5)：17-22,6.DOI:10.19406/j.issn.2097-4531.2024.05.003
早期注聚油藏波及系数研究
The Sweep Coefficient of Early Polymer Injection Reservoirs
摘要
Abstract
In response to the difficulty of quantitatively characterizing the sweep coefficient dynamic changes during the early development of polymer injection reservoirs and predicting the future sweep coefficient,a method for cal-culating and predicting the sweep coefficient of early polymer injection reservoirs is proposed based on the improved phase permeability curve,water drive curve and Welch equation.The research results indicate that in the early stage of polymer injection with low to medium water content,the growth ratio of volume sweep coefficient gradually increases with the increase of water content.After entering the stage of high water content,long-term erosion forms inefficient displacement,and the growth ratio of the volume sweep coefficient gradually slows down with the increase of water content.After entering the subsequent water flooding stage,the oil-water mobility ratio increases and the volume sweep efficiency decreases.After implementing measures to stabilize oil and control water,the volume sweep coefficient slowly increased again.Based on the dynamic data of Bohai L oilfield,the sweep coefficient and oil washing degree of single well area are quantitatively characterized,and the chart is formed.关键词
早期注聚/相渗曲线/水驱曲线/波及系数/洗油程度/调整挖潜Key words
early polymer injection/phase permeability/water drive curve/sweep coefficient/oil washing degree/adjusting and potential tapping分类
能源科技引用本文复制引用
张静,陈晓明,刘玉娟,郑彬,李金宜..早期注聚油藏波及系数研究[J].重庆科技大学学报（自然科学版）,2024,26(5):17-22,6.基金项目
"十三五"国家科技重大专项"渤海油田加密调整及提高采收率油藏工程技术示范"(2016ZX05058001) （2016ZX05058001）
中海石油(中国)有限公司科研项目"海上砂岩油田剩余油地质成因及精准挖潜研究"(YXKY-2019-KFSC-01) （中国）
