石油地质与工程2026，Vol.40Issue(2)：64-69,6.DOI:10.26976/j.cnki.sydz.202602009
注海水油藏强水淹层开发潜力再认识
Re-recognition of development potential of strongly water-flooded zones in seawater-injected Reservoirs
摘要
Abstract
Constrained by the development conditions and economic viability of offshore oilfields,seawater injection is widely adopted in some offshore oilfields.To solve the problem of inaccurate potential evaluation for strongly water-flooded layers in such reservoirs,this paper takes advantage of the characteristic that the resistivity of reservoirs flooded by high-salinity seawater is lower than that of layers flooded by freshwater.Based on the mixed-fluid salinity formula and the Simandoux equation,the resistivity of the mixed fluid under high-salinity water injection is calculated.In the absence of neutron-density logging data,the remarkable variation in reservoir resistivity after high-salinity water flooding is further utilized.Combined with the relationship between the resistivity of water-flooded layers in adjustment wells and the actual water cut after production in the PX Oilfield of Bohai Bay over the years,a correlation chart between reservoir flooding degree and water cut is established.This research renews the understanding of the potential value of strongly water-flooded layers in seawater-flooded reservoirs and provides important technical support for tapping remaining oil potential in offshore oilfields at the high water-cut stage.关键词
高矿化度水驱/水淹层解释/水驱油藏/注海水/射孔原则优化Key words
high-salinity water flooding/flooded layer interpretation/water-drive reservoir/seawater injection/perforation principle optimization分类
能源科技引用本文复制引用
刘超,杨洪伟,李景玲,李冰,刘思远..注海水油藏强水淹层开发潜力再认识[J].石油地质与工程,2026,40(2):64-69,6.基金项目
新型油气勘探开发国家科技重大专项(2025ZD1402901)子课题《海上"双高-双特高"油田水驱提高采收率技术》. （2025ZD1402901）
