石油地质与工程2026，Vol.40Issue(2)：1-9,9.DOI:10.26976/j.cnki.sydz.202602001
井—震联合下厚层辫状河三角洲前缘储层构型精细表征
Fine characterization of thick-layered braided river delta front reservoir architecture through well-seismic integration:a case study of sub-layer Ⅱ1 of the upper member of the second member of the Dongying Formation in X Oilfield
摘要
Abstract
The Ⅱ₁ of the upper member of the second member of the Dongying Formation,the main producing layer of X Oilfield,is characterized by braided river delta front deposits.With multi-stage stacked sandbodies,the prediction of sandbody boundaries is challenging,accompanied by complex remaining oil distribution and high development difficulty,thus requiring fine characterization of the reservoir architecture for this layer.Based on logging and seismic data,fine characterization of the 4th-5th order architectural elements in the study area was performed using seismic frequency-division multi-attribute fusion and natural gamma ray inversion techniques.The results indicate that the underwater distributary channel complex can be divided into three phases of channels and sand bars.A single channel has a width of 96.67-471.58 m and a thickness of 1-7 m.A single sand bar ranges from 580.50 to 2 199.57 m in length,151.31 to 733.84 m in width,and 2-7 m in thickness,with an aspect ratio of 1.01-3.84.Four stacking patterns are identified,namely vertical incision,lateral incision,vertical superposition,and lateral splicing.Verification of the distribution of architectural elements in and between wells shows that the well-seismic integrated method provides important data support for predicting the distribution of interwell sandbody architecture,which can serve as theoretical references and technical guidance for the efficient development of remaining oil in similar oilfields.关键词
东营组/辫状河三角洲前缘/储层构型/地震分频多属性融合Key words
Dongying Formation/braided river delta front/reservoir architecture/seismic frequency division multi-attribute fusion分类
能源科技引用本文复制引用
付义强,唐洪,张俊逸,龙冠宇,李雨衡,张竞秋,田山川..井—震联合下厚层辫状河三角洲前缘储层构型精细表征[J].石油地质与工程,2026,40(2):1-9,9.基金项目
国家科技重大专项"南海低渗油藏有效开发关键技术与示范"(2025ZD1407405). （2025ZD1407405）
