天然气与石油2026，Vol.44Issue(1)：55-60,6.DOI:10.3969/j.issn.1006-5539.2026.01.007
渤海中轻质油田油水相渗曲线反演方法研究及应用
Study and application of oil-water relative permeability curve inversion method for medium-light oilfields in the Bohai Bay
摘要
Abstract
Oil-water relative permeability curves play a crucial role in water flooding evaluation and remaining oil potential assessment during the middle and late stages of waterflooding development in oil fields.Currently,relative permeability curves are primarily determined through laboratory experiments.However,due to reservoir heterogeneity and experimental limitations,core-measured oil-water relative permeability cannot accurately reflect actual reservoir production characteristics.To obtain oil-water relative permeability curves that accurately reflect the flow characteristics of medium-light oil fields,this study developed an inversion method by coupling the fractional flow equation with a novel characterization formula for oil-water relative permeability curves,based on the ratio relationship of oil-water relative permeability.The method enables re-evaluation of water flooding in actual reservoirs based on the relationship between water cut and oil displacement efficiency.Results show that,compared with relative permeability curves obtained from core displacement experiments,the inverted curves yield higher oil displacement efficiency at the same water cut,with a significantly slower rate of water cut increase.The inverted relative permeability curves based on dynamic production data can more accurately reflect actual reservoir characteristics and oil-water flow behavior.The inverted oil-water relative permeability curves were applied to classify water flooding severity and identify remaining oil potential in the oilfield.This effectively guided the formulation of perforation schemes and the deployment of infill wells.This study provides theoretical support for adjustment and potential exploitation during the late stage of waterflooding development in medium-light oil reservoirs.关键词
中轻质油藏/相渗曲线反演/驱油效率/水淹评价Key words
Medium-light oil reservoirs/Relative permeability curve inversion/Oil displacement efficiency/Water flooding assessment引用本文复制引用
杨明,吴穹螈,张言辉,马栋,吴晓慧..渤海中轻质油田油水相渗曲线反演方法研究及应用[J].天然气与石油,2026,44(1):55-60,6.基金项目
新型油气勘探开发国家科技重大专项项目"渤海油田4 000万吨上产稳产技术与集成示范"(2024ZD1403800) （2024ZD1403800）
