油气地质与采收率2017，Vol.24Issue(6)：48-53,6.
渤海海域L油田砂质辫状河储层构型特征
Internal architecture characteristics of sandy braided-river reservoirs in L Oilfield, Bohai Bay Basin
摘要
Abstract
As the oilfield development entered the middle and late stage,difficulty of tapping residual oil increases when the relationship between oil and water becomes more and more complex.Fine geological research based on reservoir architecture becomes the key to tap residual oil.The hierarchy interface analytical method was applied in the article to analyze the internal architecture characteristics of sandy braided-river in the 4th area of L Oilfield in Bohai Bay Basin based on outcrop,core,modern deposits and dense well logging data.On the basis of architecture reverse classification scheme,the architecture interface of braided-river in the study area was divided into 6-12 levels considering positive sequence classification.Based on the experience formula for sandy braided-river reservoir,modern deposits constraints and stratigraphic correlation between closely spaced wells,single braided channel belt,braided bar and braided channels and interlayers within braided bar were quantitatively characterized by grade.A set of methods for quantitatively characterizing different levels of sandy braided-river were developed,and the characteristics of single braided channel belt,braided bar and braided channels and interlayers within braided bar were determined as the three levels of the architecture.There are four filling patterns for the braided channels,including sand filling,half-mud filling,mud filling and remaining mud filling,and then the genesis of different filling patterns was analyzed.关键词
辫状河/储层构型特征/层次界面分析法/落淤层/渤海海域Key words
braided river/architecture characterization of reservoirs/hierarchy interface analytical method/silting layer/Bohai Bay Basin分类
能源科技引用本文复制引用
李俊飞,霍春亮,叶小明,王鹏飞,徐静,杨建民..渤海海域L油田砂质辫状河储层构型特征[J].油气地质与采收率,2017,24(6):48-53,6.基金项目
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”(2016ZX05058-001). （2016ZX05058-001）
