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요약정보
反韵律油藏泡沫驱提高采收率研究
Resource Type
Academic Journal
Authors
姜颜波
;
元福卿
;
赵方剑
Source
石油天然气学报 / Journal of Oil and Gas Technology
. 36(1):109-113
Subject
反韵律油藏
剩余油饱和度
泡沫驱
起泡体积
半衰期
界面张力
Language
Chinese
ISSN
1000-9752
Online Access
Find it @ DONGA
초록
以胜坨油田二区古近系Es82(2~4)单元为目标,以精细油藏描述为基础,建立三维地质模型,研究特高含水后期反韵律油藏剩余油分布特征.针对油藏动态非均质性严重、主力层顶部剩余油相对富集及高温高盐等特点,研制了低张力泡沫体系,在油藏温度85℃、地层水矿化度18500mg/L、钙镁离子质量浓度505mg/L条件下,起泡体积202mL,半衰期132min,界面张力3×10-3 mN/m,在发挥泡沫体系选择性封堵油藏高渗条带、扩大驱替波及面积的同时,其高界面活性有效提高了洗油效率,室内填砂模型驱油试验提高采收率25.0%,为反韵律油藏大幅度提高原油采收率提供了技术方法.
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